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.

Authentication Failure

  • 2 replies
  • 4 have this problem
  • 16 views
  • Last reply by texbiker

sunapeedog
sunapeedog
more options

After opening TB this morning, and initial download of new emails, I suddenly started receiving Authentication Failure while connecting to server imap.gmail.com popup when trying to download new emails on Thunderbird (Supernova). When I close TB and re-open it I see this:

Warning: Potential Security Risk Ahead

Thunderbird detected a potential security threat and did not continue to live.thunderbird.net. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details.

Can someone help me solve this issue - in as low tech a way as possible?

Thanks, Linda

After opening TB this morning, and initial download of new emails, I suddenly started receiving Authentication Failure while connecting to server imap.gmail.com popup when trying to download new emails on Thunderbird (Supernova). When I close TB and re-open it I see this: Warning: Potential Security Risk Ahead Thunderbird detected a potential security threat and did not continue to live.thunderbird.net. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details. Can someone help me solve this issue - in as low tech a way as possible? Thanks, Linda

All Replies (2)

sunapeedog
sunapeedog Question owner
more options

Additional info: If I reboot my PC, I start receiving emails again, but this doesn't last for very long before the authentication failures start again, and I can no longer send or receive email.

texbiker
texbiker
more options

I had this problem for a long time. Today I changed the setting for the maximum number of server connections to cache from 5 to 3 and the problem stopped. This setting in under server settings>advanced. I think problem happens if too many email clients try to access the server. I have 2 phones, 2 Chromebooks, a Windows PC, and a Linux desktop. I changed this setting on all but the phones because I haven't found the setting there yet. I use K-9 Mail on my phones and one Chromebook.