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Can't send/receive on pop office365 account

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  • Last reply by nbinf

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I have used Thunderbird for 20+ years. I am using version 102.0.3 I use it to access 7 accounts, all on pop, 4 Gmail, 2 Yahoo, 1 work (outlook.office365.com). I access them all using pop.

Two weeks ago suddenly I was no longer able to send on my work account. Two days later I was not able to receive either. Tried troubleshooting with my work IT person but he could see no issues on his side. I installed the Mailbird app and configured it as pop, and it had no difficulty downloading and sending emails. My android devices work fine on IMAP. I added and subtracted Thunderbird to my firewall. I am only using built in Windows Defender on my Windows 10 laptop. Tried deleting passwords, resetting passwords. Nothing has worked. My work download settings are

Server: outlook.office365.com Port 995 Connection security: SSL/TLS Authentication: OAuth2 (have had it for a while)

Thanks

I have used Thunderbird for 20+ years. I am using version 102.0.3 I use it to access 7 accounts, all on pop, 4 Gmail, 2 Yahoo, 1 work (outlook.office365.com). I access them all using pop. Two weeks ago suddenly I was no longer able to send on my work account. Two days later I was not able to receive either. Tried troubleshooting with my work IT person but he could see no issues on his side. I installed the Mailbird app and configured it as pop, and it had no difficulty downloading and sending emails. My android devices work fine on IMAP. I added and subtracted Thunderbird to my firewall. I am only using built in Windows Defender on my Windows 10 laptop. Tried deleting passwords, resetting passwords. Nothing has worked. My work download settings are Server: outlook.office365.com Port 995 Connection security: SSL/TLS Authentication: OAuth2 (have had it for a while) Thanks

Modified by seapapa1

Chosen solution

Problem fixed. With version 102.2.0 I started getting an error message "The RETR command did not succeed. Error retrieving a message...". This led me to delete all junk email on the web and in Thunderbird, restart, and immediately the problem went away. All my previously unavailable emails were downloaded

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Chosen Solution

Problem fixed. With version 102.2.0 I started getting an error message "The RETR command did not succeed. Error retrieving a message...". This led me to delete all junk email on the web and in Thunderbird, restart, and immediately the problem went away. All my previously unavailable emails were downloaded

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Log into your web mail account to look at your e-mail folders locally. The following may have happened: If a "non-(down)loadable" email is in a folder that is set to "POP3 retrieval", then POP3 chronologically retrieves all earlier emails, as always. However, POP3 gets stuck with the specified error message on the email that cannot be loaded, and does not continue, so that all chronologically later emails can no longer be retrieved. The solution (for the user) is to remove the email in question from the appropriate folder, either by deleting it, or by moving it to a folder for which "POP3 retrieval is not set.