Mac Fix Errors App

Hello Hewokai,

The Mac App Store has a great collection of apps and utilities that you can download at the click of a button. As easy as that sounds, there are times when certain complications will prevent the Apple Store from installing new apps or updating the old ones. How to fix a Mac that won’t shut down. If your Mac isn’t shutting down it may be still closing apps in the background, the advice here is to be patient, sometimes it can take a while to shut.

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Thank you for using Apple Support Communities! I understand that your MacBook Air is starting up to a folder with a question mark. Having your MacBook Air power on as expected is important, and I would be happy to help.
  • Many Hackintosh users running Mac OS X Lion have been unable to login to the Mac App Store, instead receiving the error, 'Your device or computer could not be verified. Contact support for.
  • Mac OS X contains a variety of tools for repairing disk, partition, and file system errors. These options work like chkdsk on Windows, checking for disk and file system errors and repairing them. You can perform a check from within Mac OS X, but it may sometimes be necessary to use recovery mode to fix problems.
  • Installation Issues Commonly Seen with macOS. Before we get too far along, I want to point.
The folder with a question mark means your Mac couldn't find a local or network-based startup disk. The next step would be to try connecting your MacBook Air to a different Wi-Fi network, then attempting to select your startup disk in macOS Recovery following the steps here:
If a flashing question mark appears when you start your Mac - Apple Support
Specifically, use this section:

If your Mac doesn't start up

If your Mac starts up to a flashing question mark, but then doesn't continue starting up, try these steps.

  1. Turn off your Mac by pressing and holding the power button for a few seconds.
  2. Press the power button once to turn your Mac back on. Immediately press and hold the Command and R keys on your keyboard to start your Mac from macOS Recovery. Keep these two keys held down until you see an Apple logo or globe.
  3. If prompted, select a Wi-Fi network to connect to the Internet as part of startup.
  4. After the macOS Utilities window appears, choose Startup Disk from the Apple menu.
  5. Select your startup disk, then click Restart.

If you don't see your startup disk in the Startup Disk window, close the window and try the next sections of this article.


If you encounter the -2100F error again when connected to a different Wi-Fi network, contact Apple via the link below:
Contact - Official Apple Support
Take care!

May 22, 2018 5:06 PM

Many Hackintosh users running Mac OS X Lion have been unable to login to the Mac App Store, instead receiving the error, 'Your device or computer could not be verified. Contact support for assistance.' The verification issue appears to have affected the several legitimate Macs as well, though on less wide of a scale. There is no single, definite solution to this issue, but several possible workarounds are available. Read past the break to find out how to fix the error.
There are several solutions to the login error.
1. Go to /Extra in your main hard drive and open the text file org.Chameleon.boot.plist with TextEdit. This is the configuration file for the Chimera bootloader (which UserDSDT uses). Add this string to the part of the file between <dict> and </dict>:
<key>EthernetBuiltIn</key>
<string>Yes</string>
Then reboot. If this doesn't solve the errors, proceed to the next solution.Windows application error fix
2. Open org.Chameleon.boot.plist again. Add the following string:
<key>PCIRootUID</key>
<string>1</string>
If this string is currently set to 0, change it to 1. Reboot.

3. If neither of the above solutions fix the issue, open the System Preferences app and go to the Network section. On the left-hand column in the Network section, select each of the items and remove it by clicking the minus sign on the bottom of the column.
Then, go to /Library/Preferences/SystemConfiguration in your main hard drive and delete NetworkInterfaces.plist. Or alternatively, drag it to the desktop (as a backup, in case things go wrong).
By removing all of the Network items in System Preferences and deleting NetworkInterfaces.plist, you have effectively reset the network configuration for Mac OS X. Reboot (you may have to reconfigure your internet connection afterwards).

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