New
#21
Something else to try:
Backup emails first: MailStore Home – Free Email Archiving and Backup for Home Users - can run from flash drive.
Remove your existing account from Thunderbird (note account settings first)
How do I delete an e-mail account? | Thunderbird Support Forum | Mozilla Support
Reboot then re-add your account using these settings:
Thunderbird and Hotmail | Thunderbird Help