X-No-Archive: yes\n\nI'm not sure if this is the right place to ask. I have some expired\ncertificates located under "Trusted Root Certification Authority" and\n"Third Party Root Certification Authorites". I read that you shouldn't\ndelete root certificates, but don't know how to update them, or perhaps\nthis information is incorrect? A couple of them are microsoft certs\n(Microsoft Timestamp Root, Microsoft Authenticode Root) and a few are\nverisign certs. Some expired in 1999!\n\nI'm not quite sure what to do with them. I changed the properties using\nMicrosoft Management Console to disable all purposes for this\ncertificate for all the expired certificates. I'm not sure if that was\nthe right thing to do, as I'm mucking around with things I don't really\nunderstand...\n\nAlso I keep getting messages that Revocation Information is not\navailable for this security certificate, do you want to proceed? Is this\nsomething I should be worried about? Should I not be submitting\ninformation to these sites?