How to stop outlook from opening a browser every time I create a meeting?

Thank you, Chris. The Outlook In App Team has a bug submitted for this issue. I was checking to see if that bug should be appearing in production, and it appears it does because I see numerous tickets now for production users. Per updates in the bug the OWA team has implemented a fix and it is rolling out to the internal rings now. I'll post back when I know the fix will get to production.

Hi All,

For the secondary issue where the browser window was still occurring if users have never signed into OWA this issue is supposed to now be fixed. If anyone can test it or has seen this issue resolved, please let me know. I will be updating the Known Issue article soon with this update but would like to have customer confirmation prior to that update, Outlook unexpectedly opens a browser window if OWA is disabled - Microsoft Support.

For those that missed this (it's somewhere in the middle), this is listed officially as a bug and the page has been updated on 4/26/2023 stating the (not really very viable workaround...) and that they are looking into it. Someone posted the workaround earlier and others, including myself, have confirmed it does work though (just not that reasonable for more than a few users). There has been no updates since 4/26

https://support.microsoft.com/en-us/office/outlook-unexpectedly-opens-a-browser-window-if-owa-is-disabled-4c915e88-0654-4f77-8daa-a624600dc718

Update 4/26/23*: After the fix was released, some users reported the issue still occurred. After investigating further, it was determined the issue persists for users that have never signed into OWA. A bug has been logged to investigate if this scenario can be fixed. In the meantime, if your users have not signed into OWA, then to mitigate do the following workaround:*

1. Enable OWA for the user.
2. Have the user open OWA and set the Language/Time zone and proceed to open the OWA email page.
3. Disable OWA for the user.
4. Test and confirm this mitigated the issue.

We will update this topic as we get more updates on this secondary issue.

Hi, I have this happening to 3 users so far. We have OWA disabled for our employees. They are on the  latest version of Microsoft 365 Apps for enterprise 16.0.15726.20174 (Current Channel). It happens when they click on New meeting or an existing meeting on their calendar.

I tried enabling OWA and testing with 1 user. It will redirect over to https://login.microsoftonline.com once they put in their credentials, then MFA, then tries to load https://outlook.office.com/opx/ [email address] /roompanel/?hostApp=outlookdesktop&culture=en-US

Also looking for a fix for this issue.

I have another user that has been affected by this issue, is there anything that I can do to fix this?