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I mistakenly deleted my Peer's Certificate. Error code: SEC_ERROR_REVOKED_

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Can someone assist me in restoring my Peer's Certificate? I mistakenly did something that must have deleted it since I cannot log in to Xfinity account. Error message indicated that its: SEC_ERROR_REVOKED_CERTIFICATE. How do I get back to normal?

Can someone assist me in restoring my Peer's Certificate? I mistakenly did something that must have deleted it since I cannot log in to Xfinity account. Error message indicated that its: SEC_ERROR_REVOKED_CERTIFICATE. How do I get back to normal?

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No, that issue with Wfinity is a different problem and isn't cause by something you did.

There have been issues reported with the idm.xfinity.com server and it appears that Comcast/Xfinity has forgotten to update/renew the certificate for this domain. You can contact Comcast and point them to the Qualys SSL Report for idm.xfinity.com.

Try to login via this page:

See a thread like this one

More:

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For background: Firefox may be the last browser that does a real-time check for whether a site certificate has been revoked, so it is the first browser affected by this kind of problem.

Firefox doesn't have a way to exempt only one site from the revocation check; it is all sites or no sites. For that reason, if you are okay with checking your email in another browser for a while, that probably is safest, rather than having us describing how to turn off certificate revocation checking globally.