cancel the certificate

[Mihail]

Hello!
Thank you for your program. I liked her very much. I use it to access the corporate network. Everything works fine. But faced with a problem. My connection is with a certificate. There are a few users. One of the employees dismissed from work.
  How to cancel the certificate of the officer that he could no longer connect?
Regards, Mikhail!

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С уважением,
 Mihail                          mailto:admin_tm at yaraw.com