I am running Windows 11 and had this problem. Activation process pops a blank white dialog which is unresponsive for several minutes. Eventually you see text and buttons in the dialog, but those too are unresponsive for several minutes. I was trying to paste activation code, hit enter, etc., but there was no response. Eventually after several more minutes the program simply opens and works correctly without ever actually accepting the activation code. NOTE: I do have this year's version installed on an older (slower, Windows 10) laptop, but was trying to install software on the new one (Windows 11) and finish tax prep there.
Now I am getting another blank white dialog when trying to submit finished forms for e-file. So far it has yet to finish that process. Hopefully that eventually finishes as well...
