Hi! I've been using gmail via imap in Thunderbird for a 10+ years, several years ago I had to add "application password" just for Thunderbird because it doesn't support 2FA. It all worked well until 20th of November - new mail did not come in. Even though, the status bar on the bottom says "connected to imap.gmail.com". I figured, that some refreshing is needed, so I went to tools -> options -> security and I removed all saved passwords. The status bar still says "connected to imap.gmail.com". I removed the "application password" using google panel and created a new one - unfortunately, Thunderbird did not ask for a new password. Still claims "connect to imap.gmail.com". I changed the server address, so "anotheraddress" - and it kept saying "connected to anotheraddress" My mailbox and accounts settings go way back, at least 2009 (that's the oldest file on my hdd in the mail folder with all the accounts). I have several GB of data there, one of the accounts has over 30k messages. I'm using "mbox as file" option and it's saved on NTFS partition (the filesystem was an issue back in a day, with 4GB limit of FAT). When I double-click on the status bar to see the activity monitor, it's empty. The account settings are set to imap.gmail.com, port 993, user is my full gmail address, SSL/TLS, "Regular password". I tried to enable some more imap logs by starting thunderbird with some env vars set: set NSPR_LOG_MODULES=IMAP:4 set NSPR_LOG_FILE=%HOMEDRIVE%%HOMEPATH%\Desktop\tbird_log.txt start thunderbird the tbird_log.txt file has not been created. I would prefer NOT to start from scratch - I have multiple mail folders, multiple accounts - some of the messages are on the IMAP servers, some are not. Any ideas on how to solve this?