https://support.soundenterprises.net/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=221WhenconnectingtoaWindows7usingremotedesktopfromaWindowsXPclientrunningservicepack2orearlier,yougetthefollowingerrormessage:TheremotecomputerrequiresNetworkLevelAuthentication,whichyourcomputerdoesnotsupport.ToenableNLAinXPmachines;firstinstallXPSP3,thenedittheregistrysettingsontheXPclientmachinetoallowNLA•ConfigureNetworkLevelAuthentication1.ClickStart,clickRun,typeregedit,andthenpressENTER.2.Inthenavigationpane,locateandthenclickthefollowingregistrysubkey:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa3.Inthedetailspane,right-clickSecurityPackages,andthenclickModify.4.IntheValuedatabox,typetspkg.LeaveanydatathatisspecifictootherSSPs,andthenclickOK.5.Inthenavigationpane,locateandthenclickthefollowingregistrysubkey:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders6.Inthedetailspane,right-clickSecurityProviders,andthenclickModify.7.IntheValuedatabox,typecredssp.dll.LeaveanydatathatisspecifictootherSSPs,andthenclickOK.8.ExitRegistryEditor.9.Restartthecomputer.