Windows 11

[tonyg]

Is it possible for a M5A99fx Pro 2.0 to be used with Windows 11?

 

[JacobMR]

There are some hacks that allow installing Win11 on older boards (ex: replacing some files in the Windows installation directory, there are youtube videos that show how to do this).
Alternatively, I believe this board has a TPM header so installing a TPM module should also work (but you would need to purchase that module separately)