In this post i’m going to provide two solutions for a recent issue with MacOS Catalina, where the macOS can’t boot after removing the Teamviewer.

Once you have installed Mac TeamViewer uninstaller, you can launch the program on your Mac. Choose the “Toolkit” menu and select the “Uninstall” option. It enables you to remove and uninstall TeamViewer app as well as the cache files.

When the Mac gets restarted after the uninstallation, following error box pops up and avoids the boot process from being completed.

Unrecoverable Error.

10 comments on “Uninstall and Reinstall Teamviewer After It Has Expired”. Ammyy Admin is quite useful if you are looking for a remote control program very easy to use and do not give you any annoyance to the configuration of ports, firewalls and more. Oct 14, 2019 When I connect to Mac from a Windows 10 PC, using Teamviewer 14.6.4835, it connects but I only see the top menu in the mac. The rest of the screen is dark grey. I can actually click on the screen and see that menu change when I select a different window in the. Apr 18, 2019 After rebooting, run the app and you will be assigned a new TeamViewer ID. How to Reset TeamViewer ID on Linux? In case you are using TeamViewer on one of the Linux distributions, you can follow the instructions below to reset the TeamViewer ID. The method is tested on Debian 9 and with some modifications you can use it on any Linux distribution.

Security Agent was unable to create requested mechanism TeamViewerAuthPlugin:start.

In my case, this occured when I removed the Teamviewer manually by the CleanMyMac application.

Root Cause (Updated on Dec 10, 2019)

I assume this happenes as the CleanMyMac’s uninstaller removes the TeamViewer along with all related files without the operating system being aware of the changes. To be more specifc, TeamViewer registers an Authorization plugin during the installation. However, if one doesn’t use the builtin uninstaller and removes the applicaton manually or by CleanMyMac, the plugin woul not get de-registered. Therefore, in the next boot, the macOS still expects to load the authorization plugin but it can’t find respective files, TeamViewerAuthPlugin.bundle, in /Library/Security/SecurityAgents/. Consequently, it simply panics. ðŸ˜‰

Solutions (Updated on Dec 10, 2019)

All you need to do is to either have the macOS forget about it (suggested by Jack Bryant, in the comments) or give it what it wants, which is the missing file.

Although these solutions are simple, the implementation seems a bit complex, especially for non power-users. When this happens, you would not have access to any standard interface or application, like Finder, to access the file system. Instead, the only interface by which you can fix this, is the Terminal app which is accessible in the Mac Revocery Mode. As the name implies, this mode provides the user with a very limited set of tools to recover the operating system in case of serious problems. Downside, however, is that the Recovery mode is an advanced environment and is not as friendly.

I recommend to try the first solution in which basically we remove the Authorization Database. If not resolved, try the second solution where you put a copy of the missing file, TeamViewerAuthPlugin.bundle into the corresponding directory.

Disclaimer: I do not make any warranties about the completeness, reliability and accuracy of this information. Any action you take upon the information on this post is strictly at your own risk, and I will not be liable for any losses and damages in connection with the use of described solutions.

Implementation (Updated on Dec 10, 2019)

Solution 1: Remove the Authorization Database

Enter the Recovery Mode
1. Restart your Mac and hold Command+R mode until the Apple logo appears. This may take some time, so be patient!!
2. Once entered, you’ll be instructed to select the language, username, and finally to enter your password. So follow the instructions until you land in the macOSÂ UtilitiesÂ window.
3. From the window select Disk Utility.
Mount the disks
1. Connect your USB stick to the machine
2. In the Disk Utility window, from the left pane and under the Internal section, select the “Macintosh HD” disk and in the right pane click on the “Mount” button. (see Note 3 and 4)
3. Also, under the External section select your USB, e.g. MyUSB, and make sure it’s mounted as well.
  NOTE 1-1: If asked for password while mounting, use your login password.
  NOTE 1-2: The disk could be already mounted. So, while the disk is selected in the left pane, if you see Unmount button instead of Mount and the info bar is active (colorful), it means the disk is already mounted.
  NOTE 1-3: The name of the disk may differ from the example but the procedure is the same.
Open the Terminal
1. Once ensured the disks are mounted, from the menu bar, select Utilities and select Terminal.
2. Type the following: ls /Volumes/. This command lists all mounted disks.
3. You should see the name of your USB, e.g. MyUSB, along with the main disk name i.e. Macintosh HD in the output.
  MyUSB/ Macintosh HD/ Macintosh HD - Data/
  NOTE 1-4: the number of items (disks) and their names might be different from the example.
Copy the file
1. Enter the following in the Terminal:
  rm '/Volumes/Macintosh HD/var/db/auth.db'
  NOTE 1-5 – Very Important: The above command will remove the “auth.db” file. Therefore, you have to make sure you’re giving the right path in the right format. So:
  a) Notice that the command is case sensitive. Meaning for example, “myusb” is different from “MyUSB”.
  b) Notice the space between “rm” and the path as well as between “Macintosh” and “HD”.
  b) The given path should be enclosed in “”.
  NOTE1-6: Any error message such as “No such file or directory” or “Read-only file system“, means the path is not entered correctly. So, before complaining, take a deep breath, read the message carefully and compare it to that of the above. I’m sure you will spot the mistake(s).
Verify
1. If successful, you would NOT receive any congratulation message. No offense!!
2. To ensure the file is deleted enter theÂ command below; it should NOT list “auth.db” in return.
  ls '/Volumes/Macintosh HD/var/db/auth.db'
  NOTE 1-7: If it’s still there, it means you made a mistake, especially with the path. So, repeat step 4 and DO NOT rush this timeee!!!
Restart
1. If you passed the verification, don’t get excited so much yet because now you should restart the Mac with your fingers crossed.
2. To restart, from the Apple logo on the top left, select Restart and wait for the machine to boot.
3. If you’ve ever made back to the login prompt again, please:
  1. put your password
  2. close your eyes
  3. hit the Enter
  4. give it ~1 minute and then open your eyes (don’t cheat)
  5. If you’re in, return to my page and share your feeling…ðŸ˜Š

Solution 2: Copy the missing file

Get the Missing File
1. Install the TeamViewer app on another MacOS
2. Copy the “TeamViewerAuthPlugin.bundle” fromÂ /Library/Security/SecurityAgent/ to a USB memory.
  NOTE 2-1: Make sure the USB is formatted in the native MacOS filesystem to avoid incompatibility issues in the next steps.
Enter the Recovery Mode
1. Restart your Mac and hold Command+R mode until the Apple logo appears. This may take some time, so be patient!!
2. Once entered, you’ll be instructed to select the language, username, and finally to enter your password. So follow the instructions until you land in the macOSÂ UtilitiesÂ window.
3. From the window select Disk Utility.

Teamviewer Uninstall Tool Mac