serial number revoked

I cannot get into my Adobe products.  I suspect the last Windows update may have had something to do with it.  I was getting error messages that dll files were missing.  So, I decided to reinstall, but that gives me a message that my serial number has been revoked. I tried uninstalling and reinstalling, but same message.  Searching the forums, so far, only has resulted in being told to contact Adobe Support.  But I have not found a way to do that, because it keeps directing me back to the forums!  What gives.