Using TB no problem. Power failed. Restarted computer, TB email does not send or receive. TB receives Outlook email stating authentication failed. I logged back into Outlook. Outlook email works fine.
I need to fix TB to send/receive/save emails after a power failure today, Grid outage at 13:40, Power restored 13:40. Computer restarted, TB opened but will not perform any send/receive/save tasks. TB Message Send gets Outlook notification - Authentication failure. Went to Outlook email, logged back in, test email I had attempted to send by TB is in Outlook, plus new emails in Outlook, but none in TB. Checked for TB updates, current as of Jan 15, 2026. Restarted computer twice. Outlook email works but TB does not perform any tasks. I lost no TB emails in my messages before the power failure, they are all still in my TB messages. I have Firefox Browser and Windows 11. I love TB. It has had cardiac arrest. Help. Ann
Chosen solution
Service outage https://downdetector.com/status/outlook/
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Thanks, three of four of my email accounts are now working again at 5:20 PM MST. My main Outlook email account still not working. Email subjects are shown in the non working account but will not open and display. Each attempt is responded to by outlook as "authentication failure while connecting to server outlook.office365.com". Hopefully this is being worked on and will be corrected shortly. Thanks for your help.
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