Outlook 365 Folder Pane Keeps Resizing

I have recently started having problems with the Outlook 365 folder pane resizing itself.
Has anyone else found this? Is there a way to stop it?

I am not sure as to what version this started happening. Maybe the version I am currently on now, which is 16.0.13231.20250 (64-bit).

Yes, noticed it started to happen a few days ago. Same version as you.

Also for quite a while when I launch Outlook 365, it will come up with a prompt along the lines of something was not closed properly last time, do I want to open it again Yes/No. Irritating but not a real problem.

@Sam Vimes
Thanks for the reply, Sam.

At least I know it's not just me.

I think I found the solution. I guess the following setting must be for a tablet.

File » Options » Mail » Reading Pane.
Remove the tick from: "Turn on automatic full-screen reading in portrait orientation".

Thanks. I'll give that a try.

Sam Vimes said:

Thanks. I'll give that a try.

It has been at least a couple of days now and it hasn't resized, so I think that is the fix.

Please let me know if it works for you, and if it does, I'll mark the thread "Solved".

Day two and its still ok. I suggest one more day before marking it solved.

BTW: Are you seeing any problem when opening Outlook that it thinks it didn't close properly last time. I get this message sometimes and it's not true.



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I'm afraid the problem of the Folder Pane is back again for me.

Sam Vimes said:

Day two and its still ok. I suggest one more day before marking it solved.

BTW: Are you seeing any problem when opening Outlook that it thinks it didn't close properly last time. I get this message sometimes and it's not true.



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I'm afraid the problem of the Folder Pane is back again for me.

After a reboot, my folder pane resized too.
But it only does it once.

Regarding the message you are getting. No, I haven't seen it before.
But I found info about it here and here.

Many thanks for that info. At least one problem solved