Unable to scan a mapped drive from a Windows Vista/7/2008/2008R2 computer. The following error is shown run attempting a right-click scan on a mapped drive:
Sophos Anti-Virus could not scan the selected item. Check if the drive is ready or if you have sufficient rights to access the selected item.
When setting up a new scan in Sophos Endpoint Security and Control the mapped drives show a red cross over their drive icon.
First seen in Sophos Anti-Virus for Windows 2000+Sophos Cloud Managed Endpoint
Operating systems Windows 2008 Windows 2008 R2 Windows 7 Windows Vista
The Windows User Access Control (UAC) evaluation gives an incorrect level of authentication for Sophos's on-demand scanner to access the mapped network drives. The scanner is unable to read from the mapped drive and so fails.
This is due to how UAC separates user mappings from the underlying system. Scans of direct UNC shares will succeed.
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