My Acrobat XI cannot revoke the certificate on WINDOWS 7, please help me.

When I try to remove the certificate, it gives me a message to try again. I have also installed repair tools and Windows 7 patches, but the issue persists. Please help, thank you.

Translated into English, this becomes:

When I attempt to remove the certificate, I receive a message prompting me to try again. I have already installed repair tools and Windows 7 patches, yet the problem continues. Assistance would be greatly appreciated, thank you.