Outlook showing many "unopened" messages which have been opened and read

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I've just powered up my laptop and am horrified to find that I have 1364 items in my outlook.com Inbox, most of which are shown as unopened.  

Here's a thread that I created on the 18th November last year and answer-marked on the 21st November yet it's one of the emails shown as unopened.


I stopped using the slider bar to go back further but I bet that there are lots more.

Next, I checked my Sent Box and there is a similar problem there. I've already filed in separate folders most of the emails shown.

Finally I've checked my Deleted folder - only 24 items but I know for a fact that I've deleted most of them - I try to delete items there every two days at most.

There clearly is a problem - does anyone else have it?

Thank you for the response. I would suggest you do contact the Outlook in-app support for an in-depth troubleshooting.

Let us know if you have other concerns.


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Question Info

Last updated July 8, 2020 Views 70 Applies to: