error 500 when attmpting to sign into outlook

Question

Trying to access a mailbox through the Outlook online version. Been trying to find a working solution on the internet for 3 days now. Seems only non-chromium browsers work (Such as IE). Doesn't work on Edge, Chrome, Firefox, Brave etc. This issue only just appeared last Friday and didn't exist before. Haven't changed any settings whatsoever on the account. Account has Microsoft 365 Business Standard License I've tried: - Incognito/InPrivate - Clearing cookies/site data - Made sure system time was correct and in sync - On MS Word > File > Info > Access this account on the web - Updated Browsers ![65575-thumb-image001.png][1] [1]: /api/attachments/65575-thumb-image001.png?platform=QnA

Answer 1

Hi @Coons, Michael

Welcome to our forum!

Does the problem only happen in the Outlook browser client?

Can you provide a screenshot of the error? Please be careful to hide your private information. Error 500 in Microsoft Outlook often indicate issues related to bad requests or server problems.

Try these initial troubleshooting steps:

• Browser extensions can lead to conflicts. Try disabling them temporarily to see if the issue persists.
• Switch to a different network (like mobile data) to rule out network-related issues.
• Try to sign in Office 365 admin center to checking all roles you already own and remove the un-needed roles.

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