RDP Drive Mapping, drive not being mapped.

Document ID : KB000046179
Last Modified Date : 19/03/2018
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Issue:

RDP Drive Mapping has been configured in the Global Settings, however when launching an RDP session with one or more drives selected for mounting the drives do not show up in My Computer/This PC.

When working properly each drive that was selected should appear and will look similar to this:

cdrive.jpg 

Cause:
One possible cause of this is having Drive Redirection disabled on the Windows server (often as part of a group security policy). CA PAM requires Drive Redirection to be enabled on the target server for the drive mounting over RDP to work.
Resolution:

Enable Drive Redirection for this server.

Server 2008 R2:
Open "Remote Desktop Session Host Configuration” > Properties > Client tab
Under Redirection, ensure "Drives" IS checked.


Server 2012\R2:
RDS > Session Collection > Properties > Tasks - Edit Properties > Client Settings > ensure "Drives" IS checked

GPO setting:
Computer Configuration\Policies\Administrative Templates\Windows Components\Remote Desktop Services\Remote Desktop Session Host\Device and Resource Redirection

Do not allow drive redirection:  Disabled

Additional Information:

If this was disabled in your environment it is likely due to security requirements. You may want to consult your Windows &/or Security Administrators before making this change.

The Drive Redirection setting may also effect the ability to use RDP Remote Application Transparent Login. The same drive mapping technology is used when launching the Transparent Login Agent and the Transparent Login will not work if Drive Redirection is not allowed.