Forum Discussion

ProgentCT's avatar
ProgentCT
Brass Contributor
Mar 02, 2022

admin.microsoft.com inaccessible via MCAS

With a conditional access policy applied admins are unable to reach admin.microsoft.com.  It is redirected to https://admin.microsoft.com.mcas.ms and yields a blank white screen.

There is only 1 conditional access policy.

It's settings are:

All users (with 4 admins excluded).

All Cloud Apps.

3 Conditions selected

  • Device Platforms
    • Include Any Device, Exclude macOS and Linux
  • Locations
    • Any location
  • Access Controls
    • Grant Access, Require MFA
    • Require one of the selected controls
  • Session
    • Sign-in Frequency 7 days
    • Use Conditional Access App Control (Monitor Only).  I have tried to REMOVE this setting but it comes back all by itself.

 

4 Replies

    • ProgentCT's avatar
      ProgentCT
      Brass Contributor
      Mar 07, 2022
      I did. I opened a case on 2/23 and received a call on 3/4 when I was OOF. I should be speaking with them today.
      • ProgentCT's avatar
        ProgentCT
        Brass Contributor
        Apr 12, 2022
        This was a problem with MCAS and fixed by MS on the backend. There was nothing wrong with my config. I'm revisiting this today because now I have the same issue with Sharepoint. Today no user can access Sharepoint. There have been no changes in conditional access policies, it just stopped working out of the blue.

Resources