Microsoft Purview Information Protection and Adobe

Good morning,

I am looking for some assistance to see if anyone else has figured out this issue.

We're a GCC tenant currently getting sensitivity labels and MPIP set up. So far, things have been implemented okay minus a few snags. M365 products are working as intended, but the real stickler is Adobe.

The initial issue was that any encrypted label we tried to apply or even switch to, it would not work.

I found this Reddit post that called for enabling some registry keys. Things like adding bMIPLabelling, bMIPExternalAuthAdmin, bSilentAuth, iMIPCloud = 6, etc. However, that did not seem to allow us to add an encrypted label or even switch to one. Even forgetting the Purview information inside of the Adobe settings did not help.

What I believe started helping was three or four things. Clearing the Purview information inside of Adobe, deleting the generic Adobe credentials, deleting the contents of %LOCALAPPDATA%\Microsoft\RMSLocalStorage\mip, and running icacls "%localappdata%\...\LocalLow\Microsoft\RMSLocalStorage" /setintegritylevel L.

Seemed like that combination worked and I finally was able to authenticate through on a PDF, it grabbed my info, and allowed me to change to an encrypted label. However, the next document, it did not work. I was able to finagle the same steps above and it let me through on that one.

So at this point, I'm trying to figure out how to prevent this from happening on every PDF instance.

Logs have shown me that it likes to run MipContextImpl as configured for offline-only mode or tell me my cloud type is invalid. In Event viewer I see things like Token broker operation failed with AADST65002 error, or an OAuth response error: invalid_resource, service principal for resource 'urn:p2p_cert' is disabled.

So at this point in time, I'm kind of stumped. I have a ticket to Adobe about this, but kind of unsure where to look next to keep this MPIP stable in each Adobe instance. The few that are good remain good and can be changed from secure to unsecure labels, but anybody have any clues on where I can look next?

Thanks, all!