I have had Gmail POP3 polling running since January using the App password method. No issues and all has been going great. I upgraded from 3.5.0.beta7-dev to 3.5.0.beta8-dev. I immediately received the following error in my admin panel: Connection to the POP3 server is failing with an authenticati…

Hi there, does this help? [image] Connection to the POP3 server is failing with an authentication error. Please check your POP3 settings Support I recommend turning on 2FA on the account and setting up an App Password for Discourse. The policy change is ab…

No, that does not help. I have had the “app password with 2FA” implemented since January. It is the app password with 2FA that has stopped working. Any other suggestions?

I retested email reply system this morning an now it is working. No changes. Nothing net new or different other than upgrade. We will see if it throws another error code.

Gmail POP3 Polling Failing after Upgrade to 3.5.0.beta8-dev

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NateDhaliwal (Nate Dhaliwal) July 6, 2025, 12:00pm 4

Anything in /logs, or any errors in the mail account?
Also, does anything in here help?

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Connection to the POP3 server is failing with an authentication error. Please check your POP3 settings Support	5	4334	June 26, 2022
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Gmail POP3 Polling Failing after Upgrade to 3.5.0.beta8-dev

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