Unable to log in to microsoft admin center apps on MacOS and Windows, works on linux

[Marian1200]

Preliminary Checks

• I have read and understood the important section above.
• I have searched existing issues and avoided creating duplicates.
• I am not filing an enhancement request.
• I have checked that this issue cannot be reproduced on Mozilla Firefox.
• I have checked that this issue can be reproduced once I removed all my Mods and Custom CSS.

What happened?

Whenever i try to sign in to a micrsoft admin portal on a macOS or Windows device i get stuck in a loop of auth and I don't see all auth options.

When i try to do it from my linux machine it works with no issues.
Things i have checked / tried:

• I checked that privacy settings are the same across
• I checked that there aren't any company policies preventing this
• I added all of the relevant microsoft domains as exclusions to all privacy related settings on macOS
• I Opened the site and specifically told zen to disable protections

Expected behavior

I should be able to select from my preffered auth methods and proceed to the website

Actual behavior

I get stuck in a loop of "We are unable to sign you in"

Steps to reproduce

Example:

1. Open page

2. Click "Next" or " Sign in another way", both go to the following screen

Screenshots and videos

No response

Version

1.19.11b (64-bit)

What platform are you seeing the problem on?

Windows - x64

What component is this issue related to?

Security

Relevant log output if applicable

[Marian1200]

Quick update:
If i log in to microsoft and remove my Fido key it then prompts me to set up a device passkey on macOS that goes to iCloud keychain for me and when promted a pop up appears from Zen asking me to allow it when i do it just crashes and cannot continue

[ashvwinn]

Does this happen with other browsers too?

[Marian1200]

I can only confirm it does not happen with other chromium based browsers.

I will test base firefox and report back

[Marian1200]

Downloaded firefox, same issue.

Zen still does work on my linux PC, have spoken to org admin and they confirmed no restrictions have been placed on firefox