Changing my display resolution on my AWS EC2 Windows11 machine

Hello,

I hope someone here can help me, I have a big problem.

I have an AWS EC2 instance with Windows 11 C5.xlarge there I have configured some things and would like to connect to it via TeamViewer for security reasons (not via remote desktop connection)

The connection works fine via TeamViewer, but the resolution is always 800x600 on the instance when I start the connection via remote desktop, the resolution is 1920x1080.

I have done some steps to change the screen resolution including setting registry keys and also trying to force the setting via Powershell. All without success with Powershell I always get the error: The display driver failed the specified graphics mode. The latest updates are all installed and all drivers seem to be up to date. The Basic Display Adapter can be seen as the graphics card in the device manager. I also configured the instance correctly with the correct resolution before the import, but AWS seems to set this setting all the time and I can't explain why.

Hope to find a solution here.

Greetings

Mario