Dear All Staff,
Thank you for your detailed update.
We understand that you are still experiencing difficulties accessing Excel Online via the Chrome browser, and that using Edge has also been unstable—taking a long time to log in and requiring navigation through multiple portals. We truly appreciate your patience and effort in working through this issue.
To continue assisting you, please try the following additional steps:
- Create a new user profile in Chrome (optional but effective)
- Sometimes, a corrupted browser profile can cause persistent issues.
- Try creating a new user profile in Chrome and access Excel Online from there to see if the issue persists.
- Check for browser extensions or security policies
- Temporarily disable all Chrome extensions (especially ad blockers, security tools, or password managers).
- If you are using a company-managed device or network, please check with your IT department to ensure there are no policies interfering with Microsoft 365 authentication.
- Use the Microsoft 365 Diagnostic Tool
- Visit https://diagnostics.office.com and run the “Sign-in” or “Office Online” diagnostic tools.
- These tools can help detect hidden issues related to authentication or connectivity.
If the above steps still do not effectively resolve your issue, it is possible that the problem is caused by a deeper technical error.
As a moderator, I currently lack the tools and access needed to investigate this issue further. In this case, I recommend that you raise a support ticket with Microsoft’s technical support team. They have the necessary tools and system-level access to perform a more in-depth analysis.
Once you submit the ticket, a live agent will contact you through the communication method you selected. They will work with you step by step to identify the root cause and provide a thorough resolution to the issue.
Best regards,
Ryan-N-MSFT | Microsoft Community Support Specialist