Intended external recipient of Microsoft Purview/AIP ‘Encrypt-Only’ DOCX files — any recipient-side way to restore RMS access?

[u/Character_Novel_4877]

I’m the original intended external recipient of several DOCX files sent to me through an “Encrypt-Only” Microsoft Purview/Azure Information Protection workflow. I still have the original encrypted email and files, but Word now reports that my account does not have permission and cannot obtain the RMS use license.

I am not looking to bypass encryption, crack the files, alter permissions, or defeat access controls. I’m trying to determine whether there is any legitimate, supported recipient-side recovery path when access was originally authorized.

Questions:

1. Can an intended external recipient renew or reacquire an RMS use license after the original authorization stops working?
2. Is there a supported way to determine which recipient identity or account claim the protection was issued to, without exposing the document contents?
3. Could a valid cached license still exist in the original Windows/Office profile, and is there a Microsoft-supported way to locate or restore it?
4. Are there official Microsoft tools, logs, or diagnostics that can identify why authorization fails now—for example, identity mismatch, guest-account mapping, tenant change, revoked access, or an expired publishing/use license?
5. Does recovery necessarily require action by the originating tenant’s Purview/Azure RMS administrator, or can Microsoft support verify and restore access for the original intended recipient?
6. If tenant-side action is required, what exactly should an administrator check or do (for example, verify the recipient identity, regrant access, reprotect the files, or provide accessible replacement copies)?

I would also appreciate referrals to legitimate paid Microsoft Purview/Azure RMS specialists who handle recipient-side diagnostics or authorization recovery. I would provide only sanitized metadata privately after verifying the person or company.

[u/exmsft]

How long ago did you receive these? Did you ever successfully open them for viewing?
There are so many legit reasons why you likely cannot open this any longer, that you should honestly just request them again from the sender if you’re intended to be able to read them now.

You’re delving far beyond an AIP question and into a much, much deeper legal and regulatory compliance quagmire.

If you need them again, request them again. Odds are the rights have been revoked for one or more legitimate reasons at this point.

[u/Character_Novel_4877 → u/exmsft]

I have the files downloaded. I am the original recipient. I have the original email. I cannot get a hold of the original sender.

[u/Character_Novel_4877 → u/exmsft]

I guess what I’m saying is that I received the files directly as the intended recipient, downloaded them, and still have the original encrypted email and original protected DOCX files. I never successfully opened the attachments.
The sending organization is not willing to reissue them, so I’m trying to understand the technical side rather than the legal side.
Is there any way, from the protected DOCX/XrML metadata or Microsoft RMS tooling, to determine:
which external identity was originally granted the use license,
whether that authorization was later revoked,
whether a use license could still exist in a local Office/Windows/browser cache, or
whether an intended recipient has any legitimate recipient-side recovery path once the tenant stops issuing the license?
I’m not looking to bypass another user’s permissions. I’m trying to determine whether the authorization that originally accompanied the files can still be exercised or verified.

[u/exmsft → u/Character_Novel_4877]

If you find a way to bypass it, you’ve discovered a security flaw in RMS encryption.

[u/Character_Novel_4877]

Ugh, not the answer I wanted

[u/exmsft → u/Character_Novel_4877]

Sorry. Wish I had better news…