Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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
Open

Thunderbird is showing Certificate for mobile.charter.net:993 does not come from a trusted source.

jepeebles replied
jepeebles

Email not working on my desktop. Using Edge 11, Settings show certificate for mobile.charter.net:993 does not come from a trusted source. I can not send or receive email on my desktop. This started this morning. I have not made any changes to my computer, but did do an Edge update. I can check my email on my cellphone if there is a fix.

Email not working on my desktop. Using Edge 11, Settings show certificate for mobile.charter.net:993 does not come from a trusted source. I can not send or receive email on my desktop. This started this morning. I have not made any changes to my computer, but did do an Edge update. I can check my email on my cellphone if there is a fix.

All Replies (4)

What version of TB and OS?

TB Version 151.0.1 which is up to date.

Please try disabling email scanning in your AV software.

Thank you for your help. I was able to get a Certificate of Exception in settings, and this cleared my issue.

Vra 'n vraag

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.