Using Azure Information Protection to protect PDF’s and Adobe Acrobat Reader to view them

Hi all,

Just wanted to post back on here to confirm that this issue is now resolved.  It appears to have been related to incorrect cached user credentials, which were cleared from Adobe Reader as follows:

1. Open Adobe Reader DC
2. Click 'Edit'
3. Select 'Preferences'
4. In the 'Categories' list, locate 'Security'
5. Under Microsoft Azure Information Protection, click 'Clear remembered account information...'

This then allowed me to re-enter my Microsoft account details for the tenancy relevant to the one used for applying the label in the first instance.

Some other information:

Adobe Reader DC version: 2020.009.20065

Adobe Microsoft AIP plug-in: 20.9.20063.381938

Microsoft Unified Labelling Client: 2.6.111.0

Registry entries:

Computer\HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\MicrosoftAIP

eEnableLogging: DWORD HEX value 1

bSaveCredentials: DWORD HEX value 1

bShowDMB: DWORD HEX value 1

Also to add, all Classification labels were created using Microsoft Security & Compliance Centre and not migrated/imported from Azure Information Protection (blade).

The Adobe blue ribbon bar appears when opening AIP labelled (only) documents and shows the assigned classification.

The Adobe blue ribbon bar appears when opening AIP labelled and protected documents, shows the assigned classification along with a padlock symbol that displays the rights applied to the specific file.

Hopefully this is of use to others.