Inconsistent O365 Teams Support

Description of the issue: I have Brave running on two Macs - on one, I’m able to log into Teams and chat/videoconf/audioconf/screenshare, but on the other, I get the “unsupported Browser” screen and am never able to log in.

Steps to Reproduce (add as many as necessary): 1. 2. 3.

  1. Go to Portal.office.com
  2. Log in with my org credentials
  3. From the app selection menu, choose “Teams”
  4. Get redirected to the “Unsupported browser” screen.

Actual Result (gifs and screenshots are welcome!):

– Actual result: redirected to “Unsupported Browser Screen”

Expected result:
– Expected result - Teams loads

Reproduces how often:
Every time I try to load O365 Teams from the affected machine.

Operating System and Brave Version(See the About Brave page in the main menu):
Brave version 1.13.82
MacOS 10.15.6

Additional Information:
Fingerprinting protection set to standard.
Shields down for *microsoft.com and *office365.com

@bravtian,
Can you try clearing cache/site data for Office365 in the browser on the device that throws the error by going to O365, clicking the “lock” icon in the address bar, then Site settings --> clear data. Make sure you refresh the page after doing this.

Then, authenticate again and see if you still get the same error.

1 Like

On the machine with the error - I navigated to O365, clicked the lock > site settings > clear data in both O365 and repeated the process with Teams; relaunch browser and authenticate, and get the same error.

@bravtian Tested this, only worked with Allow all Cookies in Shields. Can you confirm?

Shields are down for office.com and microsoft.com, so I don’t have the ability to change the setting to Allow all Cookies. Even wish shields disabled, I still get the “Unsupported browser” splash screen when trying to load teams.

@bravtian,
You can turn Shields = Up at any time by clicking the lion icon in the address bar. Visit Office 365 and turn Shields on, then change the cookie control option to Allow all cookies as @fanboynz suggests.

My testing with portal.office.com and Brave.

I wasn’t able to login to teams with default sheilds (due to cookies)

On your suggestions and following the example from fanboynz, I turned shields on to allow me to set fingerprinting/cookie/tracker access to be the most permissive and tried again - teams still would not load with either shields on or off.

Are there other settings I should be looking at?

I did a screen record as well - but my account is too new to upload attachments, so I attached it at this oneDrive link.

https://1drv.ms/v/s!AlAVU6zDvAr_iVVnXg9V-j3IxltW?e=oG8MXP

If you Allow all Cookies Globally in brave://settings, does it help? @bravtian

Unfortunately… Allow All Cookies doesn’t do anything for me.

That said - it does look like some sort of cookie problem - Teams loads for me when I use a private session…I wish I could use a normal session, but at least I have a short term solution. Hopefully whatever the underlying cause is addressed in a future build of O365 or Brave…

Thanks for all the help!

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