Office error: “Something went wrong” when signing in to Microsoft 365 apps

Hi Stites Dragan

Thank you for reaching out to Microsoft Q&A Forum and sharing your experience.

Based on your description, you are receiving a generic “Something went wrong” error when signing in to multiple Microsoft 365 apps such as Word, Excel, and Outlook. You are also seeing the same behavior across multiple devices, even though the license is confirmed as valid and assigned.

First, please make sure that macOS and Office for Mac are fully updated.

Next, confirm whether you can sign in successfully at https://www.office.com using the same account. If sign in works in the browser but fails in the desktop apps, this usually indicates a local authentication or identity cache issue.

If the problem continues after these basic checks, Microsoft provides official guidance for removing old or corrupted Office license and identity data on macOS: How to remove Office license files on a Mac - Microsoft Support

Summary of the steps:

Quit all Office apps. Open Finder and delete the Identity folder under: ~/Library/Group Containers/UBF8T346G9.Office/

Open Keychain Access, search for the following terms, and delete all related entries:

• Microsoft Office
• ADAL
• MSOID

Restart your Mac. Open any Office app and sign in again using your work account.

Please note that this process will remove all Office sign in information from the Mac. Make sure you have the correct work or school account credentials available before proceeding.

I hope this clarification is helpful, and that following these steps resolves the sign in behavior you are experiencing on your Mac. Please let me know how things go on your side as your update can also assist others in the community who may be facing the same issue.

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