Log: "No license for Product SMBServer 4.0"

"User XYZ does not have a license for the use of the Product SMBServer 4.0" (Translated from German :-)

The User can't properly logon and above error occurs in the NT-Server Eventlog when some Users try to logon to our NT-Server via their NT-Workstations.
What is the NT internal "SMBServer 4.0 Product" and how can we solve this !"$$&/ problem?
Who is Participating?
Mark AertsCommented:
You must add NT licenses in you License Manager!
bbaoIT ConsultantCommented:
At first, are you sure the users indeed have license to access the server? :-)
Check License Manager, if you currently ran out of licenses.
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