You can label and protect a PDF document with the AIP Client on your windows workstation
Does the PDF extension change when labelling and protecting a PDF?
No, it does not change. Adobe and Microsoft have implemented this encryption capability based on the ISO specification for PDF documents
Can *PPDF documents protected by older AIP clients be opened with Adobe Reader integration?
PPDF cannot be opened with Acrobat Reader. There are PowerShell cmdlets provided by the AIP client that can assist in converting from *.PPDF extension to an encrypted *.PDF. The PowerShell cmdlets are provided in the following blog
Does the Adobe Reader integration with Microsoft Information Protection solutions support portfolio files?
Currently the support for Portfolio files is not there. Please continue to provide us feedback on capabilities that you seek in the integrations.
Are there plans to Adobe Reader support for Microsoft Information Protected files on Mac ?
Yes, that integration with Adobe Reader on Mac was released in May 2019
Is ADRMS supported with the Adobe Reader integration?
No, the version of the SDK used by Adobe Reader does not support ADRMS.