Error: "No such mount exists" in a DLP discover scan
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Error: "No such mount exists" in a DLP discover scan


Article ID: 188897


Updated On:


Data Loss Prevention Network Discover Data Loss Prevention


A scan of a network share in Symantec Data Loss Prevention (DLP) fails with the error "No such mount exists -- <drive letter>:."


Release: 15.x or 16.x

Component: DLP Network Discover on Windows 


The listed drive is not available, or is mounted for a particular purpose for example for CD/DVD on Network Discover server. This can be verified on Windows Disk Management.


On the Network Discover server update the file located at <drive>:\Program Files\Symantec\DataLossPrevention\DetectionServer\<version>\Protect\config by removing the conflicting drive letter from the list of valid drive letters in the following setting:
# All valid drive letters to be used for mounting on windows = l:,m:,n:,o:,p:,q:,r:,s:,t:,u:,v:,w:,x:,y:,z:

Restart SymantecDLPDetectionServerService service.

In one instance, the steps above did not resolve the issue.
After removing the drive letter, the error repeated with another drive letter.
This was resolved by restarting the file share host server.


Additional Information

If not enough mount points are available, or to avoid this error entirely, DLP does support using JCIFS which mounts the shares outside of normal windows mount points.