Hello,
I have a DLP policy that blocks the upload of unlabeled documents. The issue I’m facing is that when I try to upload a PPTX file that is labeled with Microsoft Purview Information Protection (MPIP), the upload is blocked by this policy.
It’s important to note that not all PPTX files are blocked—only some of them.
What I’ve noticed is that, for the blocked files, the “True file type” is detected as “ZIP archive.” In contrast, for files where the label is recognized and the upload is allowed, the “True file type” is shown as “Microsoft PowerPoint 2007 XML.”
Has anyone encountered this problem before? Your help would be very much appreciated.
Thanks,
