Doug, We have encountered a very similar problem here. I opened a support case with Microsoft and there is a known problem with NBT on Terminal Services running Win2k/SP4. I have received hotfix 899268 from MS and am testing it on some servers right now, and plan to test for the remainder of the week. http://support.microsoft.com/kb/899268/en-us) If you want to contact me directly, please feel free to do so. Regards, Bob robert.mcgeary@xxxxxxxxxx On 3/13/06, Stratton, Doug ISMC:EX <Doug.M.Stratton@xxxxxxxxx> wrote: > > For the last few weeks we have had this problem pop up out of nowhere. > > Can't map drives to a random server\share. > Does not seem to be a specific server\share that fails from week to week. > > When we try to connect to an existing mapped drive we get (for > example) H:\ is not accessible. The device does not recognize the command. > > I can ping the server\share. Just can't map to it. I can map to it from > another server. > > Any idea's? > > Only solution we have come up with is to reboot the citrix server. > > Thanks > > Doug Stratton > > Technology Engineering Services - Citrix > Shared Services BC, ISM Canada > Telephone: 250-704-1861 > Fax: 250-704-1889 > E-mail: <mailto:stratton@xxxxxxxxxx <stratton@xxxxxxxxxx>> > >