I configured a Lenovo Tab (Model TB311XU) for unattended access using the TeamViewer Host App and setting permissions using adb.
.\adb.exe shell pm grant com.teamviewer.host.market android.permission.SYSTEM_ALERT_WINDOW
.\adb.exe shell appops set com.teamviewer.host.market PROJECT_MEDIA allow
This worked perfectly, until the Android update to Version 15 was installed.
Since then the one gets stuck in 'Starting Remote-Session' screen, while on the client nothing happens except that the status changes to 'connected to ****'.
Using the QuickSupport App has the same problem.
Reinstalling and plenty of restarts did nothing either.
I'm not uploading the full debug log since I'm not certain about sensitive information, but at least two entries seem pertinant after establishing a connection.
2025/08/24 18:16:49.345 13005-14787 E/RcMethodAddonV2Base Service initialization failed with error code 3.
2025/08/24 18:16:49.345 13005-14787 E/NativeGrabbingLoop start of RcMethodAddonV2 failed