Windows 10 cannot click anything

I can open emClient but I cannot click anything. I always hear the Windows 10 error sound when I try to click on an email or any other part of the program. It’s like when an alert opens and you have to click “Ok” on the alert first before you can continue using the program.

I restarted the computer and the program several times but the problem remains.

I solved it but can’t really explain how I did it. :wink:

I could click into one email and after clicking around wildly it somehow opened that email and afterwards I could use the whole program again.