removing accounts unknown security tab

In looking a at a directory in my e: drive on a SBS 2011 system, which is a native drive (not a mapped drive) one of my folders has an Account unknown in the security tab.  I do not see it the e: drive.  How can I remove it ?


Thank you
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HalCHubAsked:
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Cliff GaliherCommented:
This happens when a user or security group was given custom permissions to a folder and then the user or group was later deleted. The folder still has those permissions, but since the account no longer exists, it registers as "unknown."

If you are sure nothing is using that SID, you can remove the permissions from the folder. If they weren't granted at the drive level then it won't appear at the drive level. That behavior is perfectly normal.
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