security question - I deleted my certificate of security by mistake

I deleted my certificate of security by mistake what I cannot do updates and it says invalid security certificate? I can't roll back something.

Hello

·         Are which security certificate you referring?

·         It's the military security certificate?

You can visit the links below for assistance.

Error message: this security certificate was issued by a company you have not chosen to trust

http://support.Microsoft.com/kb/297681

About certificate errors

http://Windows.Microsoft.com/en-us/Windows7/about-certificate-errors

Tags: Windows

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