Microsoft teams fails to load if cross-site cookies is blocked

[ryanbr]

Description

Attempting to use Microsoft teams with shields enabled, will cycle and not load and producing an error message. "To open the web app, you need to change your browser settings to allow third-party cookies."

Steps to Reproduce

1. Login to https://teams.microsoft.com/go
2. With sheilds enabled, will create a small loop then eventually error.
3. "To open the web app, you need to change your browser settings to allow third-party cookies."

Actual result:

Expected result:

Reproduces how often:

Easily enough.

Brave version (brave://version info)

Tested in Brave Release/Beta/Nightly.
Screenshots from Brave Nightly; Version 0.72.11 Chromium: 77.0.3865.65 (Official Build) nightly (64-bit)

Miscellaneous Information:

Tried some referrer whitelisting, this didn't help.

The login process has a few browser redirections involved between various domains.

https://login.microsoftonline.com/ -> https://login.live.com/ -> https://teams.microsoft.com/

skype.com and/or msftauth.net maybe related, not sure.

Seems the removing the cross-site cookie specifically on https://teams.microsoft.com/ fixed the issue.

[nils-a]

@ryanbr : could you please elaborate a bit? Where did you remove a cross-site cookie?!
I seem to be unable to access teams using brave.

[dioen]

Same here.

[ryanbr]

@nils-a In the sheilds menu, in the url-bar. Set it to allow Cookies.

[nils-a]

I missed that in your ScreenShot:

[miurahr]

accessed URLs during login: https://api.spaces.skype.com, https://statics.teams.microsot.com, https://browser.pipe.aria.microsoft.com https://jp-prod.asyncgw.teams.microsoft.com https://trouter2-easia.trouter.teams.microsoft.com/ https://jp.msgapi.teams.microsoft.com https://go.trouter.teams.microsoft.com https://jp.ng.msg.teams.microsoft.com/ https://config.teams.microsoft.com/ https://browser.pipe.aria.microsoft.com/ https://aadcdn.msftauth.net/
I can not get a success with cookies settings for these. It works by allowing these and SSO site in my company .

[naftulikay]

Here are the cookies listed once you enable third-party cookies:

• teams.microsoft.com
• asyncgw.teams.microsoft.com
• microsoftonline.com
• login.microsoftonline.com
• asm.skype.com

[arschles]

FWIW, these exceptions work for me

[alfredonodo]

Hi,
any update on this? Even office365 applications do not work properly with brave shield enabled.

[lxwulf]

Sadly it doesn't work any more at least for me, it worked in the last version but not in the newest nightly version on Linux

Version 1.21.37 Chromium: 88.0.4324.96 (Official Build) nightly (64-bit)

System: Fedora 33 KDE Version

Also set exceptions didn't work. Of course, I set off any ad blocking extensions.

[lxwulf]

Sadly it doesn't work any more at least for me, it worked in the last version but not in the newest nightly version on Linux

Version 1.21.37 Chromium: 88.0.4324.96 (Official Build) nightly (64-bit)

System: Fedora 33 KDE Version

Also set exceptions didn't work. Of course, I set off any ad blocking extensions.

On Windows 10 it works without any further configurations 🤔

[lxwulf]

Now on Windows it also doesn't work any more...

Turned off Brave Shield and any Extension no changes...

Brave Nightly Version 1.22.19 Chromium: 89.0.4389.40 (Official Build) nightly (64-bit)

[ryanbr]

Hey @lxwulf if you enable Ephemeral Storage in brave://flags does it help?

[lxwulf]

Sadly this didn't help on both systems....

[SRRepswal]

It is happened for me on all browser for a specific user. For another user it is working fine on same browsers