There are a few reasons a message may get stuck in the Microsoft Outlook 365 Outbox.
Here are the most common problems and solutions.
Contents
Reason 1 Recent Password Change
Did you recently change your login password?
Perhaps Outlook still is working off the old password.
Try closing and restarting Outlook.
You should be prompted to slide in your password again.
If that doesnt work, try restarting your rig to reset everything.
Reason 2 Message is Too Large
Check to see to it the message isnt too large.
Have a look at the Outbox.
