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

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.

Rohkem teavet

The certificate for imap.googlemail.com does not come from trusted source

  • 1 vastus
  • 1 on selline probleem
  • 91 views
  • Viimati vastas WEBCRUISING016
  • Lahendatud

WEBCRUISING016
WEBCRUISING016

Running Thunderbird 140.8.0esr 64bit Windows 11 Home, v25H2 932GB storage 32GB ram i7-13700k

Recently, I've started getting the following message every time I launch Thunderbird: "The certificate for imap.googlemail.com does not come from a trusted source."

Digging into details I get: "you are about to override how Thunderbird identifies this site" "Location: imap.googlemail.com:993" "This site attempts to identify itself with invalid information" "Unknown Identity. The certificate is not trusted because it hasn't been verified as issued by a trusted authority using a secure signature."


Digging deeper into the certificate I find the issuer is Bitdefender who I use for antivirus and VPN. However, the VPN shows no effect when enabled or disabled. The validity period is 2 Feb 2026 to 27 Apr 2026

l can get email, but cant send it. Is Bitdefender at fault?

I'm stumped. What should I do???

Running Thunderbird 140.8.0esr 64bit Windows 11 Home, v25H2 932GB storage 32GB ram i7-13700k Recently, I've started getting the following message every time I launch Thunderbird: "The certificate for imap.googlemail.com does not come from a trusted source." Digging into details I get: "you are about to override how Thunderbird identifies this site" "Location: imap.googlemail.com:993" "This site attempts to identify itself with invalid information" "Unknown Identity. The certificate is not trusted because it hasn't been verified as issued by a trusted authority using a secure signature." Digging deeper into the certificate I find the issuer is Bitdefender who I use for antivirus and VPN. However, the VPN shows no effect when enabled or disabled. The validity period is 2 Feb 2026 to 27 Apr 2026 l can get email, but cant send it. Is Bitdefender at fault? I'm stumped. What should I do???

Valitud lahendus

I dug into Bitdefender website.

I was directed to the Protection menu and then to Advanced Threat Defense. Then I added an exception to the Thunderbird.exe. 

Problem solved.
Loe vastust kontekstis 👍 0

All Replies (1)

WEBCRUISING016
WEBCRUISING016 Küsimuse esitaja

Valitud lahendus

I dug into Bitdefender website.

I was directed to the Protection menu and then to Advanced Threat Defense. Then I added an exception to the Thunderbird.exe. 

Problem solved.
Küsimuse postitamine

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