Never delete any devices by accident!

LichtiMC

After migration to managed devices I wanted to revert back to the original groups.
So I thought I would remove them from Managed Devices again.

This message appeared:

I thought, "yes, this is what I want, remove the devices from the device management to show up on the original group again".

Thought wrong.

More than 100 unattended devices are gone!

I desperately called teamviewer support, but no help from them to get them back: "We don't have a backup of your devices."

OK, so I have to drive hundreds of miles to regain access to these devices, thank you Teamviewer!

Now you can tell me, how dumb I am … or maybe anyone has an idea?

soniabraga00

If the devices were removed from Managed Devices, they likely won’t reappear in the original group automatically. You might try checking TeamViewer account logs to see if there’s any record of their last known IDs. Also, if the devices still have TeamViewer installed, you could try accessing them using their last known credentials or re-enrolling them remotely if possible. Otherwise, unfortunately, a manual reconnection might be the only solution.