This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Why can't I select an imported personal certificate to sign my mails?

  • 1 reply
  • 1 has this problem
  • 5 views
  • Last reply by Matt

more options

I have imported a personal certificate .p12 and when i press Select button in Digital Signing frame, it gives me this error:

Certificate Manager can't locate a valid certificate that can be used to digitally sign your messages with an address of <my_mail@mail_server.com>.

I have seen other people with this problem but none of their solutions worked.

I have imported a personal certificate .p12 and when i press Select button in Digital Signing frame, it gives me this error: Certificate Manager can't locate a valid certificate that can be used to digitally sign your messages with an address of <my_mail@mail_server.com>. I have seen other people with this problem but none of their solutions worked.

All Replies (1)

more options

you see other people with this problem? I don't normally. But I do have issues at the moment with certificates issues by Start.com. Who issued yours?