On Tuesday November 28th from 9:00AM PT - 12PM PT (5:00PM UTC - 8PM UTC), we will be performing system maintenance on support.mozilla.org. During the maintenance period, users will not be able to sign in to the website, and all users signed in at the start of the maintenance period will be signed out.

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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Thunderbird 102.0.1 (64-bit) Mac - Digital Signing - Send Message Error

  • 1 reply
  • 1 has this problem
  • 39 views
  • Last reply by brian245

brian245
brian245
more options

I have three accounts with sign/encrypt certificates. Prior to the update just now, they worked fine, and have for several years. Now after the update, when I try to send an email I get an error message: Sending of the message failed. Unable to sign message. Please check that the certificates specified in Mail & Newsgroups Account Settings for this mail account are valid and trusted for mail.

I get these messages in all three accounts with certificates. I checked the settings, and the certificates are correct.

Any ideas?

Thanks.

I have three accounts with sign/encrypt certificates. Prior to the update just now, they worked fine, and have for several years. Now after the update, when I try to send an email I get an error message: Sending of the message failed. Unable to sign message. Please check that the certificates specified in Mail & Newsgroups Account Settings for this mail account are valid and trusted for mail. I get these messages in all three accounts with certificates. I checked the settings, and the certificates are correct. Any ideas? Thanks.

Chosen solution

Fixed. For some unknown reason 102 was missing an intermediate certificate.

Read this answer in context 👍 0

All Replies (1)

brian245
brian245 Question owner
more options

Chosen Solution

Fixed. For some unknown reason 102 was missing an intermediate certificate.