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Hi,
Something went wrong [2400] error in outlook application. Web outlook is working fine.
Tried outlook repair, reinstallation, new profile creation and cleared password from device credential manager still issue persist. Seems like Microsoft issue. Screenshot attached
Please share any troubleshooting steps for permanent fix
Thanks
Anand
Using Classic Outlook on Windows for personal email, calendar, and contact management
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Thanks for the idea. Sadly after trying this …no change. Even re-installed Office and no change.
Hello. I've started getting this exact same problem this morning (25th April UK) Only affecting my outlook,com address in M365. Fine via web browser. Hasn't updated since sometime on Sunday 23rd.
I've tried the suggestions here but nothing fixes the problem yet.
FYI - also working fine on Android 11 phone
Need assistance. TIA.
Same for me. Started today. Coincides with the forced 2FA adoption
Yes, it's definitely something to do with the authorisation process. I've had 2FA implemented for a long time. Never been a problem till today. :(
This is happening to me too!
Driving me crazy and do not know what to do