OneDrive and Microsoft 365 No Longer Working

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1

Today is July 6, 2025.

Approximately 4 days ago I began experiencing problems with OneDrive and Microsoft 365.

I can load the OneDrive website with no problems. I cannot, however, create new documents or load existing documents.

Doing so results in the attached screenshot.

This happens with shields, and without shields on. It also happens in Private windows.

It also happens with or without any extensions installed or enabled.

It seems to be specific to the latest build of Brave. [Brave 1.80.115 (Official Build) (64-bit)]

Chromium: 138.0.7204.97

I have checked this same situation in Google Chrome (which I hate), and it works flawlessly, so this problem is unique to Brave only.

I have spent close to 2 hours trying various suggested options found online, and using ChatGPT to suggest things that I might not think of, but all to no avail.

While I wait for the Brave team to fix this, is there a way for me to downgrade to a previous version of Brave?

Brave Browser OneDrive Error Screenshot
Brave Browser OneDrive Error Screenshot1637Ă—885 26.2 KB

Description of the issue:
How can this issue be reproduced?

  1. OneDrive documents no longer working
  2. Attempt to open or create a OneDrive/Microsoft 365 document

Expected result:

Expected result is to be able to open or create a document in OneDrive

**Brave Version( check About Brave): [Brave 1.80.115 (Official Build) (64-bit)]
Chromium: 138.0.7204.97

Additional Information:

1 Like
2

The only way I could get to OneDrive personal was by opening a Brave private window and typing in the url.
But, it needs to be fixed–it has been too long for it not to work in regular Brave.

3

Thank goodness someone else is experiencing the same problem. I’ve failed multiple ways trying to get this to work. The links still work in other browsers so hopefully the brilliant minds behind the scenes can get this working again.

4

We have some other users reporting this as well, but the behavior is different. Have either of you tried clearing your cache/data for onedrive?

Visit OneDrive, click the “tune” icon in the address bar next to the URL, then Site settings --> Delete data, refresh the page and try again.

5

I believe the problem you’re having is different than what I am experiencing.

I can open the OneDrive website with no issues. But I cannot open or create a file in OneDrive, either Word of Excel.

I can, however, open those same files in Google Chrome, and Ungoogled Chromium.

6

I have spent close to 2 hours trying to get OneDrive files to open in Brave.

I was not aware of a Tune button. And I do not see it anywhere in my browser.

Please clarify, and maybe include a screenshot, please.

Thank you

7

Are you referring to this, that says, “Performance”?

Also, FYI, I have cleared cache, cookies, etc. multiple times. Even a private window does not see any better results.

image
image359Ă—348 10.8 KB

8

image

9

Thanks. I tried that, and it still gave me this.

I believe it is a much deeper issue than cached files, etc. As I said, even a Private Window doesn’t resolve it.

image
image1643Ă—738 33 KB

10

I’ve been unable to open or create files using OneDrive or Office.com in Brave for over a week. The interface loads, files display, but clicking to open/edit results in failure.

What I’ve Tried:

  • Brave Stable (1.80.115)
  • Brave Beta
  • Brave Portable 1.78.102 (Chromium 136)
  • Shields fully off
  • All extensions disabled
  • Cookies/cache cleared
  • Private Window mode
  • DevTools shows repeated net::ERR_HTTP2_PROTOCOL_ERROR failures from:
    • RemoteTelemetry.ashx
    • RemoteUls.ashx
    • AppSettingsHandler.ashx

Chrome and Edge work fine.

Conclusion:
This appears to be a server-side change by Microsoft that breaks OneDrive/Office functionality in Brave, possibly due to telemetry endpoints or unsupported browser detection.

11

Yes, a different problem from mine. Hopefully, will be fixed soon!

12

Today, 8 days after making my original post, I finally solved the mystery!

The problem turned out not to be Brave, but Avast antivirus.

It was a long process of elimination to figure it all out, but the HTTPS scanning in Avast was blocking the HTTPS requests in Brave and causing OneDrive not to open or create files.

I simply disabled the HTTPS scanning and the problem instantly went away.

SOLVED!

2 Likes
13

Can anyone else here confirm whether or not they have Avast or some other anti-virus software running that is causing this particular issue?