macOS Catalina updates improve the stability, performance, or compatibility of your Mac and are recommended for all Catalina users. To get these updates, choose System Preferences from the Apple menu , then click Software Update. Learn more about updating the software on your Mac.

There is a driver available on the support page fro your model. Driver for Catalina dated 9/29 - IJ Scan Utility - States Certified for OSX Catalina 10.15. MG3200 series Scanner Driver Ver.19.2.0 (Mac). Issues like hardware or apps won't work after macOS Catalina update, Mac not turning on, and data loss are included. Many people are indecisive to upgrade to macOS Catalina, the latest operating system by Apple. Thus, knowing possible macOS Catalina issues will help a lot before you install macOS 10.15. For example, you can't download/install.

For details about the security content of these updates, see Apple Security Updates.

• macOS 10.15
  

macOS Catalina 10.15.5

macOS Catalina 10.15.5 introduces battery health management in the Energy Saver settings for notebooks, a new option to disable automatic prominence in Group FaceTime calls, and controls to fine-tune the built-in calibration of your Pro Display XDR. The update also improves the stability, reliability, and security of your Mac.

Battery Health Management

• Battery health management to help maximize battery lifespan for Mac notebooks
• Energy Saver preference pane now displays battery condition and recommends if the battery needs to be serviced
• Option to disable battery health management
  For more information, please visit https://support.apple.com/kb/HT211094

FaceTime Prominence Preference

• New option to control automatic prominence on Group FaceTime calls, so video tiles do not change size when a participant speaks

Calibration Fine-Tuning for Pro Display XDR

• Controls to fine-tune the built-in calibration of your Pro Display XDR by adjusting the white point and luminance for a precise match to
  your own display-calibration target

This update also includes bug fixes and other improvements:

• Fixes an issue that may prevent Reminders from sending notifications for recurring reminders
• Addresses an issue that may prevent password entry on the login screen
• Fixes an issue where System Preferences would continue to show a notification badge even after installing an update
• Resolves an issue where the built-in camera may not be detected when trying to use it after using a video conferencing app
• Addresses an issue for Mac computers with the Apple T2 Security Chip where internal speakers may not appear as a sound output device in Sound preferences
• Fixes a stability issue with uploading and downloading media files from iCloud Photo Library while your Mac is asleep
• Resolves a stability issue when transferring large amounts of data to RAID volumes
• Fixes an issue where the Reduced Motion Accessibility preference did not reduce the speed of animations in a Group FaceTime call

Enterprise content:

• Improves performance on certain Mac models when enabling hardware acceleration in GPU-intensive apps such as those used for video conferencing
• Addresses an issue where Microsoft Exchange accounts were unable to sign in during account setup when using Conditional Access
• Apple Push Notification Service traffic now uses a web proxy when specified in a PAC file via the Proxies payload
• Resolves an issue that prevented some displays connected to MacBook Pro (16-inch, 2019) from waking from sleep when the Mac wakes
• Major new releases of macOS are no longer hidden when using the softwareupdate(8) command with the --ignore flag
  This change also affects macOS Mojave and macOS High Sierra after installing Security Update 2020-003.

macOS Catalina 10.15.4

macOS Catalina 10.15.4 introduces iCloud Drive folder sharing, Screen Time communication limits, Apple Music time-synced lyrics view, and more. The update also improves the stability, reliability, and security of your Mac.

Finder

• iCloud Drive folder sharing from Finder
• Controls to limit access only to people you explicitly invite, or to grant access to anyone with the folder link
• Permissions to choose who can make changes and upload files, and who can only view and download files

Screen Time

• Communication limits for controlling who your children can communicate with and be contacted by throughout the day and during downtime
• Playback control of music videos for your children

Music

• Time-synced lyrics view for Apple Music, including the ability to jump to your favorite part of a song by clicking a line in lyrics view

Safari

• Option to import Chrome passwords into your iCloud Keychain for easy AutoFill of your passwords in Safari and across all your devices
• Controls for duplicating a tab and for closing all tabs to the right of the current tab
• HDR playback support on compatible computers for Netflix content

App Store with Apple Arcade

• Universal Purchase support enables the use of a singular purchase of a participating app across iPhone, iPod touch, iPad, Mac, and Apple TV

Pro Display XDR

• Customized reference modes that you can tailor to specific workflow needs by selecting from several color gamut, white point, luminance, and transfer function options

Accessibility

• Head pointer preference for moving a cursor on the screen based on the precise movements of your head

This update also includes bug fixes and other improvements:

• High Dynamic Range output to HDR10-compatible third-party displays and TVs connected with DisplayPort or HDMI
• OAuth authentication support with Outlook.com accounts for improved security
• CalDav migration support when upgrading to iCloud reminders on a secondary device
• Addresses an issue where text copied between apps may appear invisible when Dark Mode is active
• Resolves an issue in Safari where a CAPTCHA tile may display incorrectly
• Fixes an issue where you may receive notifications for updated or completed reminders
• Fixes an issue with screen brightness for the LG UltraFine 5K display after waking from sleep

Enterprise content:

• Apple Push Notification Service traffic now uses a web proxy when specified in a PAC file
• Resolves an issue where updating the login keychain password after resetting a user password would cause a new keychain to be created
• After enabling ”Search directory services for certificates” in Keychain Access preferences, searching by email address in Keychain Access or Mail now locates a user certificate stored in directory services
• When setting the DisableFDEAutoLogin key in com.apple.loginwindow, you can now sync your FileVault password with the Active Directory user password after updating the user password
• Reinstates the ability to update or restore iOS, iPadOS, or tvOS devices by dragging .ipsw files to the device in an Apple Configurator 2 window
• Addresses an issue where sending the EraseDevice MDM command might not cause the device to be erased
• When logging in as an Active Directory user after using deferred FileVault enablement, the user is now prompted for their password to enable FileVault

Some features may not be available for all regions, or on all Apple devices.

macOS Catalina 10.15.3

The macOS Catalina 10.15.3 update improves the stability, reliability, and security of your Mac, and is recommended for all users.

• Optimizes gamma handling of low gray levels on Pro Display XDR for SDR workflows when using macOS
• Improves multi-stream video editing performance for HEVC and H.264-encoded 4K video on the MacBook Pro (16-inch, 2019)

macOS Catalina 10.15.2

The macOS Catalina 10.15.2 update improves the stability, reliability and performance of your Mac and is recommended for all users.

This update adds the following features:

Apple News

• New layout for Apple News+ stories from The Wall Street Journal and other leading newspapers

Stocks

• Get links to related stories or more stories from the same publication at the end of an article
• “Breaking” and “Developing” labels for Top Stories
• Stories from Apple News are now available in Canada in English and French

This update includes the following bug fixes:

Music

• Restores the column browser view for managing the music library
• Resolves an issue that may prevent album artwork from appearing
• Fixes an issue that may reset music equalizer settings during playback

iTunes Remote

• Adds support for using an iPhone or iPad to remotely control the Music and TV apps on a Mac

Photos

• Resolves an issue that may cause some AVI and MP4 files to appear as unsupported
• Fixes an issue that prevents newly created folders from appearing in Albums view
• Addresses an issue where manually sorted images in an album may be printed or exported out of order
• Fixes an issue that prevents the zoom-to-crop tool from working in a print preview

Mail

• Addresses an issue that may cause Mail preferences to open with a blank window
• Resolves an issue that may prevent using undo from retrieving deleted mail

Other

• Improves the reliability of syncing books and audiobooks to your iPad or iPhone through the Finder
• Fixes an issue where reminders may be out of order in the Today smart list in the Reminders app
• Resolves an issue that may cause slow typing performance in the Notes app

Enterprise content

• Fixes an issue where the user password might not be accepted at the login window after upgrading a Mac with an Apple T2 Security Chip to macOS Catalina
• Improves compatibility with video conferencing apps on MacBook Pro models introduced in 2018
• Users logged in as a standard user can now install apps from the App Store

macOS Catalina 10.15.1

The macOS Catalina 10.15.1 update includes updated and additional emoji, support for AirPods Pro, HomeKit Secure Video, HomeKit-enabled routers, and new Siri privacy settings, as well as bug fixes and improvements.

Emoji

• Over 70 new or updated emoji, including animals, food, activities, new accessibility emoji, gender-neutral emoji, and skin tones selection for couple emoji

AirPods support

• AirPods Pro support

Home app

• HomeKit Secure Video enables you to privately capture, store, and view encrypted video from your security cameras and features people, animal, and vehicle detection
• HomeKit enabled routers let you control how your HomeKit accessories communicate over the internet or in your home
• Adds support for AirPlay 2-enabled speakers in scenes and automations

Siri

• Privacy settings to control whether or not to help improve Siri and Dictation by allowing Apple to store audio of your Siri and Dictation interactions
• Option to delete your Siri and Dictation history from Siri Settings

This update also includes the following bug fixes and improvements:

• Restores the ability to view file names in the All Photos view in Photos
• Restores the ability to filter by favorites, photos, videos, edited, and keywords in Days view in Photos
• Fixes an issue where Messages would only send a single notification when the option to repeat alerts was enabled
• Resolves an issue that caused Contacts to launch to the previously opened contact instead of the contact list
• Adds a two-finger swipe gesture for back navigation in Apple News
• Resolves issues that may occur in the Music app when displaying playlists inside folders and newly added songs in the Songs list
• Improves reliability of migrating iTunes library databases into the Music, Podcasts, and TV apps
• Fixes an issue where downloaded titles were not visible in the Downloads folder in the TV app

Enterprise content

• When using the built-in keyboard with a non-U.S. keyboard layout, passwords with certain characters are no longer rejected at the Mac login window
• When sign in with Apple ID is not allowed by a configuration profile, the Sign In button in System Preferences is now dimmed

macOS Catalina 10.15

Summary: This article discusses all macOS Catalina known issues with solutions. Issues like hardware or apps won't work after macOS Catalina update, Mac not turning on, and data loss are included.

Many people are indecisive to upgrade to macOS Catalina, the latest operating system by Apple. Thus, knowing possible macOS Catalina issues will help a lot before you install macOS 10.15. For example, you can't download/install macOS Catalina, apps won't work, iCloud is not available, or you have connectivity issues with yout WiFi or Bluetooth on macOS Catalina.

Therefore, this post discusses some common macOS Catalina upgrade issues and how to fix these problems.

Now, let's check the table below and see if you can find a solution to your problem.

Warning: This post will include multiple macOS Catalina problems, and some serious problems like 'Mac not booting after update' could cause data loss. Therefore, if you are facing some Mac booting issue after macOS update, it is highly recommended to recover the lost files from the unbootable Mac with iBoysoft Data Recovery for Mac first.

With more patchers are released and bugs are fixed, macOS 10.15 Catalina becomes better and better. But new macOS Catalina issues will never stop showing up. Thus, this article is worthy of reading as you'll know some common macOS Catalina upgrade issues, and how to address them.

1. Should I update My Mac to macOS 10.15 Catalina?

macOS Catalina is so tempting to upgrade, but you may still sit on the fence and wonder:

• Is macOS Catalina stable to use on My Mac?
• Is it worth updating to macOS Catalina?
• Will macOS Catalina damage or slow down My Mac?

More worries keep bothering you. Then, should you upgrade to macOS 10.15 Catalina on your Mac? To be honest, it's up to you as now macOS Catalina is getting less and less flaws.

If you want to try these new features mentioned in WWDC 2019, you can have a bash to install macOS Catalina. But keep one thing in mind, back up your Mac and everything before updating macOS.

If you are an conservative person who have get used to macOS Mojave or High Sierra, then just don't upgrade.

2. Can't install macOS Catalina on Mac

Normally, you can sign up to the Apple APP Store to download and install the macOS Catalina 10.15. But you could encounter problems while you are downloading or installing it.

How to fix:

If you are suffering from this problem, you probably need to check if you have enough space on the drive or volume for installation. The macOS Catalina update will take more than 4.9 GB in total.

Or you may not install to this volume because the Macintosh HD is not mounted when installing macOS Catalina, then you need to check your startup disk in Disk Utility.

Space is enough but the macOS installation couldn't be completed still? Well, you can boot your Mac into Safe Mode and reinstall macOS 10.15. This will isolate incompatible software when you update the sysem. Here is how to boot Mac in Safe Mode (also known as Single User mode).

1. Restart your Mac and immediately hold the Shift button.
2. When your Mac boot into Safe Mode, reinstall macOS 10.15 Catalina.
3. Reboot your Mac.

Also, you may be unable to upgrade to macOS Catalina because of the error 'macOS Catalina could not be verified' below, even though you have cleared out your content caching and re-download for times.

How to fix:

1. Click the Apple logo at the upper left and choose System Preferences.
2. Find Date & Time and open it.
3. Select Date & Time panel and Click the lock to make changes at lower left.
4. Uncheck and then recheck the 'Set date and time automatically' option and then save changes by click the lock.

Then restart the computer and proceed to download the update once again through settings and software update. Hopefully, it will resolve the issue of the update not being verified.

3. macOS Catalina runs into low disk space during installation

Chances are that you still can't install macOS Catalina even in Safe Mode. Sometimes, even though you have pretty much no personal file on this Mac and space appears to be enough, you still could fail to install this system due to low disk space warning. As a matter of fact, it's just one of the macOS Catalina problems many users would face.

However, if you are disturbed by the low space problem, you received the low space warning from the system.

How to Fix:

You can fix the low space issue is to delete some local Time Machine snapshots which were made by the system previously. However, if you are not a specialist, you are not advised to do this deletion in case of losing data. Instead, if you have backups in Time Machine, you can just downgrade the macOS Catalina to another stable one like Mojave and then restore your lost files.

Some users see an additional Macintosh HD - Data volume in the Disk Utility of macOS Catalina and regard it as an unknown issue. Indeed, it's not. APFS drive in macOS Catalina will be divided into two volumes. One is called Macintosh HD which contains the system information and is protected with read-only mode, while the other one is Macintosh HD - Data volume where your apps and files are stored.

4. Can I install the macOS 10.15 alongside macOS Mojave?

You are torn if you don't know if macOS Catalina is better than Mojave or High Sierra. Maybe, you can make a compromise between them. That is to run macOS Catalina alongside your current macOS.

You can split your hard drive into two systems and install the Catalina on a separate partition. It is feasible because macOS Catalina will reside itself in a read-only volume, and you can do this with these steps:

Step 1: Open Finder and click Go at the upper left of your desktop.

Step 2: Go to Utilities and choose Disk Utility.

Step 3: Select the internal/startup hard disk and choose Partition at the top.

Step 4: Click Partition and click on the plus button +.

Step 5: Fill in a name, choose APFS format, and choose a size.

Step 6: Click Apply to create a new partition.

Step 7: When you move forward to install macOS Catalina, choose this partition as the installation location.

To switch between your current macOS Mojave and macOS Catalina, you can access System Preferences by clicking the Apple logo at the upper left of the desktop and select Startup Disk. Then click the lock at the lower left corner to make changes, key in the password as the system asks. Finally, select your system and restart your Mac.

5. Mac won't boot/turn on after installing macOS Catalina

If you breeze in the newest macOS and install it to your lovely Mac computer, only to find that your Mac won't turn on or stuck on the loading bar after update, or even gets stuck on Mac grey or white screen.

What a nuisance! It has to be fixed instantly because you probably are in need of this Mac. But before you go further to fix the not booting Mac, you are strongly advised to recover lost data from this unbootable Mac with iBoysoft Data Recovery for Mac to avoid losing anything important.

Learn why Mac black screen happens and how to fix black/blue/grey/white screen and turn on your MacBook Pro/Air without problem. Read more >>

After you get your files back, stay in calm and try the following solutions to fix this unbootable Mac.

Solution 1: Check Mac hard drive with Disk Utility in macOS Recovery mode

If your Mac can't boot past the Apple logo after installing macOS 10.15, you can check the startup disk in Disk Utility in case there is any disk error.

Step 1: Reboot your Mac and immediately hold Command + R to boot into macOS Recovery mode.

Step 2: Release theses keys when you see the loading bar.

Step 3: Select Disk Utility from the macOS Utilities menu.

Step 4: Select the startup disk or the macOS volume in the left sidebar of Disk Utility.

Step 5: Click First Aid at the top center and click Run to repair this disk.

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Step 3: When it's finished, click on Done and restart your Mac as usual.

Solution 2: Uninstall macOS Catalina or downgrade it to macOS Mojave

Also, it is possible that your Mac is not compatible with macOS 10.15, or you are not satisfied with macOS Catalina's performance. In this case, you may want to uninstall macOS Catalina from your Mac.

Then how to uninstall macOS Catalina on Mac? Can you downgrade macOS Catalina to Mojave? You can check the overall solutions to Mac is not booting up after macOS update or follow these steps to uninstall macOS Catalina.

Step 1: Completely turn off your computer.

Step 2: Restart your Mac and hold Command + R instantly to boot Mac into macOS Recovery Mode.

Note: If your Mac can't boot into macOS Recovery mode with Command + R, you can hold Option + Command + R or Shift + Option + Command + R at startup. It will boot into macOS Recovery over the Internet, so make sure your Mac is connected to the Internet.

Step 3: Let go of the key combinations when you see the macOS Utilities menu.

Step 4: Choose Disk Utility and click Continue.

Step 5: Choose the Startup Disk (labeled Macintosh HD usually) and click Erase.

Step 6: Format it as APFS and click on Erase.

Step 7: Back to macOS Utilities menu and choose Reinstall macOS.

Step 8: Click Continue and then agree to any terms and conditions. When it is completed, your Mac will restart and get back to macOS Mojave.

Check 10 tested and tried solutions to fix a Mac computer, like a MacBook Pro/Air, an iMac or a Mac mini, that won't turn on or start up normally. Read more >>

6. macOS Catalina update is stuck/frozen

You may be wondering how long time macOS Catalina will take to install because this macOS update is frozen on your Mac for hours. Many people are confronted with the similar problem that the macOS Catalina is stuck on 'Setting Up Your Mac', Screen time, or other process. It annoying and frustrating, especially after you have run out of your patience by waiting for its completion.

How to fix:

Well, if you have waited it for a very long time but nothing has changed, you can try to backup your files and reboot your Mac by holding down the power button. Hopefully, this will make your Mac go back to normal condition.

7. Sidecar errors: Service Not Supported

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Even though Sidecar is the most exciting feature for many users, the Sidecar is limited to work on some Macs/iPads. That's to say, Sidecar may be not working when you mirror macOS Catalina to iPadOS. If you're unable to connect to your iPad and receive 'Sidecar errors: Service Not Supported', you need to firstly check if your iPad is installed with iPad iOS 13, then check the following list to see if your device is compatible with macOS Catalina 10.15.

Macs that are compatible with macOS Catalina:

• MacBook Pro (Mid-2012 and newer)
• MacBook Air (Mid-2012 and newer)
• MacBook (early 2015 and later)
• iMac (late 2012 or newer)
• iMac Pro (2017 or newer)
• Mac Pro (late 2013 or newer)
• Mac Mini (late 2012 or newer)

iPad models that support Sidecar

• 12.9-inch/11-inch/10.5-inch/9.7-inch iPad Pro
• iPad (5/6th generation)
• iPad mini (5th generation)
• iPad mini 4
• iPad Air (3rd generation)
• iPad Air 2

8. Apps won't work in macOS Catalina

It is possible that you install macOS Catalina on your Mac, only to find that some of your software like Microsoft Word 2011 won't run or even open in macOS 10.15 at all. Instead, you may receive a message like below to inform you that your app is not optimized for your Mac and needs to be updated.

Why? Actually, it is because macOS Catalina doesn't support 32-bit apps anymore. Apple has been phasing out 32-bit software for the last 10 years and macOS Mojave is the last one that supports 32-bit software.

How do I check if my app is 32-bit on Mac?

By default, macOS will tell you that the app is 'not optimized for your Mac' or something like that when you attempt to open a 32-bit app in macOS Catalina. However, if it doesn't give any warning but the software just won't open, you can also check your apps for 64-bit compatibility manually.

Step 1: Click on the Apple logo at the top left corner and select About This Mac.

Step 2: Click on the System Report….

Step 3: Scroll down the context menu in the sidebar until you see the Software section.

Step 4: Click on the Applications option under Software to show your applications on this Mac.

Step 5: Find the target app and you will see a section titled 64-Bit (Intel).

Next to this section is either Yes or No. 'Yes' means the app is 64-bit, and 'No' means the app is 32-bit and needs to be updated. Download citrix workspace for mac mojave.

How to fix:

Well, you can't have your cake, and eat it. If you want to upgrade your operating system to macOS Catalina which is only compatible with 64-bit software for sure, you can't use your 32-bit apps. So, you have only three options in this case and the solution is totally up to your preference.

1. Upgrade this software to a newer 64-bit version.
2. If there is no 64-bit version available for this app, find an alternative one that does the same work but is compatible with macOS 10.15.
3. Downgrade macOS Catalina to macOS Mojave.

Here is the overall tutorial to downgrade from macOS Catalina to macOS Mojave, or High Sierra, Sierra, El Capitan, etc. without data loss. Read more >>

9. macOS Catalina keeps asking for Apple ID

Some users also complain that after installing macOS Catalina, the Mac asks for updating the Apple ID settings. However, after you put in your password of Apple ID and your Mac password, the message may pop back up again and again after a few minutes.

How to fix:

You can solve this macOS Catalina bugs by saving your keychain to iCloud drive, and the following is the steps to do this.

1. Click on System Settings.
2. Choose Apple ID at the top and then choose iCloud in the context menu. It will show what is using the iCloud.
3. Scroll down this menu and choose Keychain.
4. Enter your Apple ID and your computer password a couple times as they are asked.

10. Apps icons go missing in the Finder

In macOS Catalina 10.15, you might see some icons of your apps disappearing when clicking the Applications shortcut in the Finder sidebar, only third-party applications. This will happen if you used Migration Assistant to migrate your data to a Mac running macOS Catalina.

How to fix:

1. Open the Finder on your Mac.
2. Right-click on Finder at the upper left corner of your desktop, and then choose Preferences.
3. In the Sidebar tab, select the Applications favorite, then remove the Applications shortcut from the sidebar that displays incorrect results.

This article will show you how to recover lost/missing/disappeared Documents Folder and other files on macOS Catalina and earlier with ease. Read more >>

11. WiFi/Bluetooth is not working on macOS Catalina

Can't access the Internet after installing macOS Catalina? WiFi/Blutooth is not working or not available? Check the following methods to fix such issues.

How to fix macOS Catalina WiFi not working issues:

Method 1: Simply click on WiFi in the menu bar and turn WiFi Off. And then wait for 10-15 seconds and reconnect to it. Try this for several times if it doesn't fix the WiFi problem after the first try.

Method 2: Restart your Mac in Safe Mode and see if you can access the Internect. If you can, it should be some incompatible apps or extensions that hinder the WiFi in normal work, and you could fix such WiFi not workign issue by uninstalling or updating your software and drivers.

Method 3: Create a new Network Location simply.

1. Click the Apple icon at the upper left, and then choose System Preferences.

2. Find Network and then create a new Network location which usually show as Automatic.

3. Choose Edit Locations, click on the + button to create a new location, and then click Done.

4. Re-join a known working WiFi network.

How to fix macOS Catalina Blutooth issues:

1. Open Finder, click on Go in the top menu, and then click Go to Folder...
2. Type in /Library/Preferences and click Go.
3. Find the file com.apple.Bluetooth.plist, copy this file to another location and then delete the original one.
4. Restart your Mac and reconnect to your Bluetooth devices.

12. iCloud is not available after macOS update

As you know, iCloud is extremely helpful to share folders between different devices. Sometimes, it can even restore some lost files after an update.

However, after macOS Catalina was released, you might see the message 'Couldn't connect to iCloud' when creating a new Pages, Numbers, or Keynote document in a shared folder. When confronted with this problem, you can simply close this document and then reopen it.

Furthermore, you could meet some other iCloud issues.

• iCloud Drive fails to automatically download all files after macOS Catalina update
• Multiple empty Application libraries within iCloud Drive after update

How to fix:

1. Download the desired files from iCloud drive manually and individually.
2. Safely remove the empty folders from iCloud.
3. Restart your device and start everything from scratch.

13. External hard drives/mouse/keyboard is not working in macOS Catalina

It happens that Mac won't recognize your external hard drive after installing macOS 10.15 Catalina. What's worse, this issue also affects some accessories like keyboard, mouse and printer drivers, etc. Why?

For the most part, it is still the 32-bit driver that makes your external drives not working.

How to fix:

1. Simply update these drivers in App Store
2. Contact the developer in their support page to ask for a driver update.

The reasons for Mac not recognizing external hard drive are varied, so check this guide to fix 'Mac doesn't recognize external hard drive' issue easily. Read more >>

14. macOS Catalina makes Mac slow/overheating

As for a large number of exciting features are introduced in macOS 10.15 Catalina, some people complain that Catalina has slowed their screens down. What's worse, it makes their computers overheating, and even causes some battery problems.

It is annoying, especially for some game geeks and office workers who need a fluent computer eagerly. Thus, try the solutions below to calm you and your Mac down.

Solution 1: Uncheck Login Items as many as possible

Even though macOS is designed for better performance, too much unnecessary items at login will lower you Mac. What's worse, these login items could make your Mac stuck on loading bar when you boot your Mac. So, just disable it as the following steps.

Step 1: Click on the Apple logo at the top left corner and select System Preferences.

Step 2: Choose Users and Groups in the menu and click on your account in the left sidebar.

Step 3: Click Login Items in the right column to show a list of programs that automatically start up when you turn on your Mac.

Step 4: Select as much software as you can and click on the minus - button at the bottom of this window.

If this doesn't fix your problem when you reboot your Mac, try the next solution.

Solution 2: Reset System Management Controller (SMC)

Resetting the System Management Controller (SMC) is a feasible solution if the macOS Catalina is not working normally, which helps to solve many power and hardware related issues. If you are suffering from one of these problems below, resetting SMC is particularly effective.

• Mac computer is overheating
• Power management and battery problems
• Video and external displays not working
• Mac doesn't respond when you press the power button
• General performance and functionality problems

How to reset SMC on Mac:

Step 1: Shut down the computer completely and make sure your Mac is connected with power.

Step 2: Using the built-in keyboard, press and hold the Shift + Control + Option + Power Button keys at the same time for about 10 seconds. If you have a MacBook Pro with Touch ID, the Touch ID button is also the power button.

Step 3: Release all the keys together and press the power button to start up your computer.

Step 4: The boot time after resetting a machine's SMC will be a bit longer than usual, that is normal. When the computer is booting up, you can customize your Mac settings according to your need again.

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15. Files, documents, or folders get lost after update

You may lose files after macOS update. Some users' desktop becomes empty, and some other people find that they can't locate some photos in Photos library. It's a terrible feeling when you can't find important documents, photos, emails, etc. after macOS update. So, you'd better not risk your work Mac with the every new Apple operating system.

Lost important data after updating to macOS Catalina? Files on their MacBook or iMac are gone? Click this post to get solutions to recover them. Read more >>

But since you have lost files after macOS update, the most urgent thing probably is to recover these files. You can try these 3 solutions to get them back.

Solution 1: Recover files from iCloud

Actually, if you 're using iCloud Drive to sync Desktop & Documents folders, it is rather easy to restore documents, photos, etc.

Just visit www.icloud.com and sign in with your Apple ID to recover your files now.

Solution 2: Recover files from Time Machine backups

No data backup in iCloud? Don't worry, because you have another feasible way to recover lost/disappeared files.

Ta-ta, that is Time Machine. If you have backed up your Mac with Time Machine before update, it's easy to recover lost files then. Now, let's see how to recover files from Time Machine backups.

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Step 1: Connect this Time Machine backup external hard drive to your Mac.

Step 2: Click on the Apple logo at the top left corner and select System Preferences.

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Step 3: Find Time Machine, open it, and then check Show Time Machine in menu bar.

Step 4: Locate Time Machine at the upper right menu, click its icon and choose Enter Time Machine.

Step 5: Look through the Time Machine backup folders in the left sidebar and locate the target files according to time.

Step 6: Select files you want to recover and click Restore.

Solution 3: Recover lost data with Mac data recovery software

If you haven't backed up the lost/missing files with Time Machine, then you can look for a Mac data recovery tool to recover files from the Mac computer after macOS Catalina update.

Update For Canon Scanner For Mac Os Catalina 2

You can use iBoysoft Data Recovery for Mac to recover lost data from Mac computers.

Update For Canon Scanner For Mac Os Catalina Free

iBoysoft Data Recovery for Mac is user-friendly Mac data recovery software, which can recover photos, videos, music files, word files, emails, etc. from Mac computers. It is one of the most powerful APFS data recovery tools that can recover files from formatted, corrupted, unreadable, unmountable APFS partitions/drives. What's more, it also can retrieve deleted/lost files from emptied Trash and supports external hard drive data recovery, SD card data recovery, USB flash drive data recovery, etc.

Tutorial to recover lost data from macOS Catalina with iBoysoft Data Recovery for Mac

Step 1: Download iBoysoft Data Recovery for Mac on your Mac and launch it.

Step 2: Select the drive/volume you lost data from and click Next to scan for files on this drive.

Step 3: Select files you want to get back. You can preview the target files by double-clicking.

Step 4: Click Recover to get lost/missing files back.

Update For Canon Scanner For Mac Os Catalina Island

16. External drive is read-only in macOS Catalina

Another problem many users are facing is that external drives are read-only in macOS Catalina. This could include hard drives, USB flash drives, SD cards, etc. As a result, you will be unable to write to, transfer, edit, delete files on the read-only drive in macOS Catalina. As a matter of fact, this problem results from the NTFS file system which Apple does not officially allow write support, and it not only occurs to macOS 10.15 Catalina but other Mac operating systems.

How to fix external drive read-only in macOS Catalina:

If your external drives are read-only in macOS and you're unable to write to NTFS drives, you can download an NTFS for Mac driver like iBoysoft NTFS for Mac. This tool can mount NTFS drives on Mac in read-write mode, granting you full access to NTFS drives in macOS so that you can create, save, copy, paste, delete and modify files on this drive.

Best NTFS Driver for Mac - iBoysoft NTFS for Mac

• Mount NTFS volumes in read-write mode and unmount with single click
• Check and repair NTFS disk errors on Mac
• Erase data on NTFS disks easily
• Reformat exFAT/FAT32/HFS+ disk to NTFS on Mac
• Support macOS 10.15/10.14/10.13/10.12 and OS X 10.11/10.10/10.9/10.8

Update For Canon Scanner For Mac Os Catalina 2017

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If you're faced with a macOS Catalina issue that is not covered in this article or you have other tested and trusted solutions, kindly update us via [email protected]