Fix common macOS 10.15 Catalina issues

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How to fix macOS Catalina problems from installation to hardware, software not working, stuck in Setting Up Your Mac, macOS Catalina login error. Fix Wifi problems on MacOS Catalina.

Fix macOS Catalina loading issues

Some people see an error message that says “macOS Catalina download has failed”. Others see the error message “The network connection was lost” when trying to download macOS Catalina.

Another common problem when downloading macOS Catalina is the error “Installation of macOS could not continue. Installation requires downloading important content. That content can’t be downloaded at this time. Try again later. ”

That may be because many people download macOS 10.15 at the same time. Please try again later. You can check the status of the Apple server directly to make sure there is no problem with the Apple side. Not enough free space on Mac. To check, open the Apple menu and click About This Mac

Select Storage and then check to make sure there’s enough space on the hard drive. At least 15GB of free space is required to download macOS 10.15 Catalina. If there is not enough space, open the Apple menu, click About this Mac> Storage> Manage and free up drive space.

Use wired network instead of Wifi network to ensure stable Internet connection. If you’re still having trouble downloading macOS Catalina, look for partially downloaded macOS 10.15 files and a file named Install macOS 10.15 on your hard drive, then delete them and restart your Mac, and try downloading again.

After trying the above, you still have problems downloading macOS Catalina, opening the App Store, clicking View My Account and seeing if there is anything in the Unfinished Downloads section. Finally, log out of Store to see if it can be reloaded.

Catalina is stuck on Setting Up Your Mac

some users reported after installing macOS Catalina, their Mac displayed the message Setting Up Your Mac but nothing else happened.

when you have the identical problem, you want to restart MacOS. You do not need to fear because the setting up Your Mac message way the replace is complete, so that you might not lose statistics or harm something by way of rebooting your Mac.

To do this, press and maintain the power button for a few seconds until the Mac or MacBook shuts down. Wait some more seconds, then flip it again on. Mac or MacBook will boot into macOS Catalina successfully.

If you have difficulty freeing up a disk, look for hidden Time Machine files as these can be very large. When there is enough free space, try installing it again.

If macOS Catalina is having trouble finishing the installation, then an error message appears, restart the Mac and press Command + Option + R on the keyboard while the Mac boots to boot the recovery system over the Internet. You can also try pressing Shift + Option + Command + R.

If the Mac continues to fail to boot, create an external Mac boot disk. You should boot your Mac in Safe Mode, then try installing macOS 10.15 Catalina from here to fix the problem.

fix macOS 10.15 running slowly

If macOS Catalina displays the message Optimizing Your Mac: Performance and battery life may be affected until completed, then this is normal because macOS Catalina is performing in the background, which may affect performance.

After a day or so, your Mac will run simply as nicely. if you don’t see the change, try restarting your Mac or MacBook.

One component you need to check is to ensure all apps and software are updated to the today’s version. If any of those apps have problems with Catalina, it may gradual down your device.

You can also open the Apple menu and select System Preferences. Click on Users & Groups. Select Logon Item and then select the application you want to stop not starting with the system and click on the small minus sign below the list.

Try restarting your Mac. Turn off applications that use a lot of RAM. You can specify by using Activity Monitor (in / Applications / Utilities) to see which processes and applications are using a lot of CPU or RAM.

To force an item to be disabled, click it in the Activity Monitor list, click the X on the left of the toolbar, and then specify you want to turn it off. You can clear the cache by opening the Finder window, selecting Go from the top menu and selecting Go to Folder. The text box appears. Type / Library / Caches.

Delete data from inside each directory. Repeat the process with / Library / Caches. Run the Repair Disk tool from within Disk Utility

Fix mouse issue on macOS Catalina

On macOS Catalina, the mouse does not work, open the ~ / Library / Preferences / folder in the Finder to delete the following files:

com.apple.AppleMultitouchMouse.plist
 com.apple.driver.AppleBluetoothMultitouch.mouse.plist

Restart your Mac so the mouse works again

Fix boot problems on macOS 10.15

After installing macOS 10.15 Catalina, but the Mac does not boot, after rebooting the Mac and holding the Command, Option, P and R keys to reset NVRAM. Hold these keys until the computer restarts and hear the second boot bell. Release these keys after you hear the second boot. PRAM will be reset.

While in Safe Mode, run Disk Utility to see if the booting issue has been fixed.

The application does not work on macOS Catalina

MacOS Catalina no longer supports 32-bit applications. This means that applications without a 64-bit version will no longer work.

Applications that do not work on macOS Catalina include Transmist 4.1.7, 1Password 2.12.2, iStats Menu 2.9 and QuickBooks 2015

Test the 32-bit application on the system by clicking on the Apple icon at the top of the screen, then select About This Mac. Click on System Report and then on Software section.

Click Applications to view the application list. There is a column called 64-bit (Intel). If the application has No in that column, it is not supported on macOS 10.15

If you have already installed a 32-bit application, check for a 64-bit version. If not, you need to find an alternative application

Fix Wifi issue on MacOS Catalina

If you have problems connecting to the Internet, via Wi-Fi or Ethernet connection after installing macOS Catalina, try booting your Mac in Safe Mode and see if you can connect.

If possible, that means the installed app or extension is problematic. Make sure you have updated drivers and applications, follow up on Apple updates in the future.

Fix macOS Catalina installation issue

First, make sure your Mac is eligible to run this version. List of macOS Catalina supported devices:

  • 12-inch MacBook (2015 and up)
  • MacBook Air (2012 and above)
  • MacBook Pro (2012 and above)
  • Mac mini (2012 and above)
  • iMac (2012 and above)
  • iMac Pro (2017)
  • Mac Pro (2013 and above)

Your Mac is compatible and has finished downloading macOS Catalina but without the installation prompt, look for a file called Install macOS 10.15 in the Mac’s application directory. Double click on the file to start the installation.

If you have trouble installing because of low disk space, restart mac and press Control + R during boot to enter Recovery mode. Select Disk boot to boot normally, then delete unnecessary files

fix macOS 10.15 login error

having trouble signing in to your computer after installing macOS Catalina, or having a login or logout loop error

First, restart the Mac and hold down the Command + S key while booting. Enter the following command:

/sbin/mount -uw /

Hit Enter and enter the command:

rm /var/db/.applesetupdone

The device will delete the file and appear as if Catalina was booting for the first time. Don’t worry, nothing important has been deleted. Hit Enter, then reboot your computer. You will be asked to create a new admin user account

Fix battery problems on macOS Catalina

this may be because macOS Catalina is doing a little history paintings to installation and after a few hours or a day the entirety is solid and the battery life will return to normal.

If not, update all applications. Click on the battery icon in the top menu bar, showing the application and process using a lot of battery. Close them and see if the battery improves. Make sure those apps are up to date and check their settings to see why using so much battery power.

Fix Bluetooth problem on macOS Catalina

To fix the problem with Bluetooth not working in macOS Catalina, open Finder and click Go on the top menu, then Go to Folder …, type / Library / Preferences.

You should see a file named com.apple.Bluetooth.plist. Select and delete the file (or move it to another folder to keep it safe), then restart your Mac and try connecting to the Bluetooth device again.

Fix Finder on macOS Catalina

Finder has crashed or is unresponsive after updating to macOS 10.15

Open Terminal and enter the command:

~/Library/Preferences/com.apple.finder.plist

Press Enter, you’ll see a highlighted file in the Finder, select and delete it. Restart the Mac

fix Sidecar problem on macOS 10.15

Sidecar allows you to use iPad as a second monitor

If there’s a Sidecar problem, it’s worth checking something

iPad listing supports Sidecar:

  • iPad 6
  • iPad 7
  • iPad mini 5
  • iPad Air 3
  • Any iPad Pro
iPad must be updated to new iPadOS

List of supported Macs:

  • 27-inch iMac (Late 2015 or newer)
  • MacBook Pro (2016 and above)
  • Mac mini (2018)
  • Mac Pro (2019)
  • MacBook Air (2018)
  • MacBook (early 2016 or newer)
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