Scan Failure's

Scan Failure's

When i try to scan a laptops i get this message:

FAILURE :No response received from workstation. Probably the workstation might be switched off or does not exist.

I have disabled the firewall on it and can connect to it using "wmimgmt.msc". I have tried to scan using the network scanner using the computer name and local admin username and passy. If i use the IP address it shows an already scanned laptops .
It does work if i change the IP to something that hasn't been scanned in, but not using the computer name. This is happening with a number of our machines now and is becoming more frustrating. Service desk seems to search it's data base for the IP and not scan for it.
We have a certain number of unreserved IP addresses that we use for laptops that comeback to headoffice after someone leaves or to be repaired and once we scan them in that IP is always associted to that laptop. This is a big problem as the IP address has to be reissued and then we cannot add the laptop to the service desk because it is already associated.
This would not be a problem if the computer name scan worked consistantly as everylaptop has a unique name.






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