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I have a user who is getting a 500 error while logging in to Office365 with a valid account using different browsers (Chrome and Edge). It's giving her an X-OWA-Error System.FormatException message for X-OWA-Version 15.20.4129.28
Issue started on Monday, and she can login normally with the Outlook desktop app and on the phone app.
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Hi @David At Auburn ,
Welcome to our forum, please kindly understand under Outlook tag, we mainly focus on general issue on outlook desktop client, considering it could work normally on your desktop client, the issue may be more related to exchange, in order to solve it better, I would remove outlook tag and add exchange online tag, thanks for your understanding and hope your issue would be resolved soon.
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Hi @David At Auburn ,
In order to better solve this issue, I want confirm with you the following points:
Please check if the user's OWA function is disabled.
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Hi @David At Auburn ,
I am writing here to confirm with you how thing going now?
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If the response is helpful, please click "Accept Answer" and upvote it.
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Hi @David At Auburn ,
I am writing here to confirm with you how thing going now?
----------
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.