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JSI Tip 1967. 'The parameter is incorrect' while viewing Permissions in Windows NT Explorer?

If you receive The parameter is incorrect, while viewing Permissions in Windows NT Explorer, you probably used CACLS to grant (/G) Full Control to a user with the /E switch, when the user already had an ACL that contained Read, Write and/or eXecute permissions.

This is a bug in Netuil.dll, which can be circumvented by using the /P switch instead of the /G switch, but this will remove any inheritance currently set for the user.

A better solution is to contact Microsoft Support and ask for fix Q250318.

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