DLP incidents with the following path '\;LanmanRedirector;P:000000000038339b\foldername' are being observed in the Enforce console, and they appear to be originating from a shared drive.
These incidents are occurring as a result of a third-party application attempting to access or use a network share. Importantly, it's not a DLP issue but rather a Windows issue related to how the path has been sent to the DLP system.
To address this issue, follow these steps:
Lanman redirector in this Microsoft document.
How to whitelist or exclude an application from DLP Endpoint agents