do a
google search.
I'll keep looking. btw, what do you use win2k server for?
http://www.eventid.net/display.asp?app=Top10&eventid=1000
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Source:
Userenv
Type: Error
Error
Description Windows cannot determine the user or computer name. Return value (<return error code >).
Comments This event occurs in various conditions, the return code providing more details about the problem. Use NET HELPMSG to obtain a description of the code.
Return code 59 means: "An unexpected network error occurred." - Typically, connectivity problems (cable, hub, switch, etc.. layer 2 level)
Return code 1317 means: "The specified user does not exist.."
Return code 1722 means: "The RPC Server is unavailable" - Usually occurs when DNS servers are not configured properly. There is connectivity but not at the service level. See the link below for troubleshooting. One note here, usually it may appear that DNS is set properly but one has to double-check all the aspects of DNS registration/resolution as the problem may not be that obvious.
Return code 1908 means: "Could not find the domain controller for this domain."
More info
Q261007 ,
Troubleshooting Common Active Directory Setup Issues in Windows 2000
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It could be other problems though