Is there specific logs that can be checked to see if drive redirection is actually being used for data transfer?

Hi SLorraine,

Thanks for reaching out to Microsoft Q&A.

In AVD, monitoring drive redirection activities, especially to see if users are accessing or transferring data through redirected drives, involves checking the logs.

Event Viewer/Local Logs on AVD Session Hosts:

• If auditing is configured, you can check for file access events (ex: eventID 4663, which tracks access to files & folders), could give you insights into when and where files are accessed.
• Application and Services Logs > Microsoft > Windows > TerminalServices-LocalSessionManager: Here you might find events related to session activities, including redirection.
• Application and Services Logs > Microsoft > Windows > RemoteDesktopServices-RdpCoreTS: This log could contain events related to drive redirection when users connect to AVD.

Azure monitor & loganalytics:

• If enabled, diagnostics settings can capture user session events, including drive redirection. The logs can be sent to log analytics, where you can create queries to filter out specific drive redirection activities.
• If native logs are insufficient, custom scripts or policies can be deployed on session hosts to monitor and log drive redirection activities.

Security and auditlogs (If incase yo have this configured):

• Check if there are any specific audit policies set to track drive redirection or file access activities. These logs can then be analyzed using tools like log analytics.

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Hi @SLorraine

This would be logged on the session host event logs. It might not be currently captured to be queried though 

Supported Plug and Play Device Redirection | Microsoft Learn

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