MS Teams / Company Portal cannot be used

/e/ version: 2.1-t-20240603406607-stable-FP4
Device model(s): Fairphone 4
Developer mode enabled: no
Device rooted: no
Trackers blocker enabled: yes

Summary

After upgrading to /e/OS 2.1 on my Fairphone 4, I can no longer use MS Teams.

First of all, here are some basic facts:

Both MS Teams and MS Company Portal (required by my employer) where installed into Android Work apps profile using the App Lounge for work apps profile.
/e/OS version 2.1-t-20240603406607-stable-FP4
Teams version 1416/1.0.0.2024113110
Company Portal version 5.0.6271.0

When trying to sign in in Teams, the following error occurs:

Looking into the details, I see the following:

So I’ve installed YASNAC which succeeds:

{
  "apkCertificateDigestSha256": [
    "CFMi+R9OCRrIqon0WdOwQgA4I9aG0m1sYPZuUf5a2ns="
  ],
  "apkDigestSha256": "6eSwd6Ed+f4Pab9sXTvk+hqbA8VFtfdCnYlznf+zIbc=",
  "apkPackageName": "rikka.safetynetchecker",
  "basicIntegrity": true,
  "ctsProfileMatch": true,
  "evaluationType": "BASIC",
  "nonce": "OGUzZmQ5YmQtYzM0OS00NDEyLTgyOTItNzM3ZDA0NWM3ZmNlCjIwMjQtMDYtMjhUMTI6MjA6MTYuMjM3KzAyOjAwCkZhaXJwaG9uZS9GUDRlZWEvRlA0OjEzL1RRM0EuMjMwOTAxLjAwMS9lbmcucm9vdC4yMDI0MDYwMy4xODU5MTk6dXNlci9yZWxlYXNlLWtleXMKMzMKMjAyNC0wNS0wNQo=",
  "timestampMs": 1719570019604,
  "deprecationInformation": "The app is allowlisted to use the SafetyNet Attestation API until the full turndown: https://g.co/play/safetynet-timeline."
}

When checking the Google SafetyNet registration of the work profile, I can see neither Company Portal nor Teams tried to register itself, only YASNAC:

I’ve already cleared caches and data and tried reinstalling the apps, all without luck.

Furthermore, I double-checked that Advanced Privacy does not block anything - I even disabled it.

Thx for your support!

The problem

Steps to reproduce

Enable work profile via Shelter
Install MS Company Portal in work profile
Install MS Teams in work profile
Configure MS Teams with my business account which also configures Company Portal

What is the current behavior?

Error that device is not healthy.

What is the expected correct behavior?

MS Teams works as before with /e/OS 2.0

Technical informations

Relevant logs (adb logcat)

Relevant screenshots

Solutions

Workaround

Possible fixes