Hi lessha. Would you please post a screenshot?

Would be happy to screenshot, but next day it gave up. I turned off every option I could find, don't know what if anything helped. Maybe a glitch, maybe copilot being frisky, tho I've never turned it on. Maybe microsoft attempting world take over. In any event, a pain in the butt that went away.

Do you have mail account with outlook.com hotmail.com msn.com or live.com all of these now use oauth authentication to connect and get mail. The initial request for authentication appear as web pages seved by outlook.com requesting your permission.

The initial authentication can actually last years for folk using the same old computer from the same address but for those surfing from a VPN or from WiFi in cafe etc it may only be short lived as Microsoft revoked the original token because it may have been compromised.

Huh-maybe something like that, Matt-I don't have an outlook.com acct, but I have a have email through godaddy, which uses outlook.ofice365.com as server. And OWL mediates (?). But I had it for decades, through several computers, never saw Outlook pooping pen new tabs and demanding attention. Hopefully the mystery stays away.

Yep, I would suspect on no information that OWL needed to update (which happens automatically usually but a restart of Thunderbird has to occur. Or used to) you subsequently restarted Thunderbird and everything was then good.

Just for the future. With any electronic device that plays up. Turn it off. Unplug the power if appropriate. (It is for desktop computers with soft off power management) go make a cup of coffee and then turn it on again. Sometimes up to 10 minutes are required for all residual power in the internals to dissipate, hence the go have coffee.