Can't Boot after uninstalling Teamviewer on Mac OS Catalina

I just went through this and I've never even had teamviewer; however, I found that if I did a recover from timemachine backup then ran the terminal script I had success. Hope you figured it out, and if not try that method. It did, oddly enough, recover me to my original operating system (Catalina) so I had to update to Big Sur again but I'll take that over having a $2000 paperweight. 😉

after uninstall the team viewer software.im not able to start my macbook. when i enter the password this message shown.UNRECOVERABLE EROR.please solve the issues. i have important file i dont want them to loose

A couple of days ago, I deleted the TeamViewer app on my laptop. Afterwards, my laptop collapsed on last Wednesday. I searched up the reasons online and It’s probably because I recklessly threw the app into the trash can on my laptop when I was deleting it. I found one popular solution for this online which is to download the TeamViewer.dmg from another computer, transfer it onto a usb, and then transfer the dmg from the usb to my laptop. Such process requires me to put in specific codes into the terminal. I tried many times. It still doesn’t work. Could you help me figure out the problem? If there’s an extra procedure needed for me to fix my laptop, please tell me. If you guys have a better solution, please also tell me.

Hello @jmblp2,

Welcome to the TeamViewer Community! 🎉

Have you already tried to uninstall TeamViewer on your macOS and install it again? Please find a step-by-step guide below 👇🏻

📌Hint: There is also an option for manual uninstallation of TeamViewer on macOS. You might need to try that if it still does not resolve your issue.

Also, you might find some useful information in this comment here, as another user had a similar issue before 👇🏻

Please let us know if you need further help. 🙂

Best,

Justin

@reinesky Where are you getting this error, and what where the steps you did before you got this error?

In my experience, the easiest way to recover from deleting an authorization plugin from the system without de-registering it, is to make macOS re-create the authorization database by deleting the database file.

There should be no need to install TeamViewer from Recovery Mode, and I would not recommend doing so, as the installer is not designed to run in Recovery Mode.

I have written down the steps to delete the authorization database in my earlier comment: https://community.teamviewer.com/English/discussion/comment/75701/#Comment_75701

With all instructions like this, please make sure to type the commands exactly as written and carefully read each step of the instructions. Please pay particular attention to the placement of quotes ("), and make sure to understand where the instructions are asking you to substitute a placeholder with a value that is particular to your Mac.

@reinesky Can you please run these two commands while in Recovery Mode, and send the output (take photos so you don't have to copy the output by hand):

ls -al "/Volumes/<your disk>/var/db"

(again, replace <your disk> with the actual disk)

mount

Also, please take a photo of the list of devices & volumes in Disk Utility while in Recovery Mode.

Which macOS version is installed on your Mac?

Here is a YT video that helped me in one go after 6 hours of messing about on this thread.

rm "/Volumes/Macintosh HD/var/db/auth.db"

Space after rm

Don't forget quote marks

If you're disk isn't Mac.. HD then use your one but don't use the one with data on the end.

https://youtu.be/PIFDCnB_3pw

@Hello000 Once your Mac is booting again, the issue should be resolved permanently.