@Jason Sewell
Thank you for your post!
When it comes to "DisableMandatoryInOutlook", I found the available advanced client settings for classic AIP, and the equivalent for the unified labels. You should be able to Exempt Outlook messages from mandatory labeling by running:
Set-LabelPolicy -Identity Global -AdvancedSettings @{DisableMandatoryInOutlook="True"}
I've also added the 'office-exchange-server-mailflow' tag to this thread to see if our Outlook and Exchange mailflow community can look into this as well.
If you have any other questions, please let me know.
Thank you for your time and patience throughout this issue.
James, thank you for your assistance. We have observed that the DisableMandatoryInOutlook setting does not prevent users from being forced to label email in the Outlook web app (aka OWA). Are you aware of a work-around that prevents users from having to label mail created in OWA, but still require them to label newly-created documents in Word, Excel, Powerpoint?
Same question - we used the exception for outlook as described above. But this doesn not work for OWA (outlook web). Recently I am also getting in reports from endusers that even in their outlook client software this was again mandatory since 9/March/2021. This is only occurring on some of our endpoints.