
There are times when I suddenly cannot receive new emails on Thunderbird.
I have set up a Microsoft 365 account in Thunderbird to send and receive emails. Suddenly, I cannot receive new emails on Thunderbird. Even if I manually attempt to send/receive emails, new emails are not received. No error messages are displayed. When I log into Webmail (Outlook), I can see the newly arrived emails. Upon checking with Microsoft, they indicated that the root cause seems to be related to the failure in properly updating the UIDL map and UIDL history. Reinstalling the Thunderbird application did not resolve the issue. Could you please advise on how to address this problem?