Zenworks 11.1
windows 2008 r2 server
need to uninstall this primary server
Authentication error....
DEBUG 2017-05-26 15:25:07,881 - Uninstall setting not applicable for server
DEBUG 2017-05-26 15:25:08,193 - Authentication failed
ZENworksUninstall.UninstallException: The uninstall encountered an unexpected error. The uninstall preparation returned 1
at ZENworksUninstall.WindowsUninstaller.invokeZac(Str ing arg)
at ZENworksUninstall.Form1.contactDataModel_DoWork(Ob ject sender, DoWorkEventArgs e)
DEBUG 2017-05-26 15:25:12,280 - Uninstall setting not applicable for server


also If i run zac from a command prompt I get

UnableToCommunicateUnknwonError
Exception: Object reference not set to an instance of an object.
System.NullReferenceException: Object reference not set to an instance of an ob
ect.

Server stack trace:
at System.Web.HttpContext.Unroot()
at System.Runtime.Remoting.Channels.CoreChannel.Setup UrlBashingForIisSslIfNe
essaryWorker()
at System.Runtime.Remoting.Channels.CoreChannel.Setup UrlBashingForIisSslIfNe
essary()
at System.Runtime.Remoting.Channels.BinaryServerForma tterSink.SerializeRespo
se(IServerResponseChannelSinkStack sinkStack, IMessage msg, ITransportHeaders&
eaders, Stream& stream)
at System.Runtime.Remoting.Channels.BinaryServerForma tterSink.ProcessMessage
IServerChannelSinkStack sinkStack, IMessage requestMsg, ITransportHeaders reque
tHeaders, Stream requestStream, IMessage& responseMsg, ITransportHeaders& respo
seHeaders, Stream& responseStream)

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleRe turnMessage(IMessage re
Msg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateI nvoke(MessageData& msgD
ta, Int32 type)
at Novell.Zenworks.Zmd.CommandLineManager.ShouldUserD aemonBeLoaded(String[]
rgs)
at CommandLineExe.Program.ProcessArgs(String[] args)



also zenagentnotify will not run zenagent log shows

Unhandled exception
Type: System.NullReferenceException
Message: Object reference not set to an instance of an object.
Help Link:
Stack Trace:

Server stack trace:
at System.Web.HttpContext.Unroot()
at System.Runtime.Remoting.Channels.CoreChannel.Setup UrlBashingForIisSslIfNecessaryWorker()
at System.Runtime.Remoting.Channels.CoreChannel.Setup UrlBashingForIisSslIfNecessary()
at System.Runtime.Remoting.Channels.BinaryServerForma tterSink.SerializeResponse(IServerResponseChannelS inkStack sinkStack, IMessage msg, ITransportHeaders& headers, Stream& stream)
at System.Runtime.Remoting.Channels.BinaryServerForma tterSink.ProcessMessage(IServerChannelSinkStack sinkStack, IMessage requestMsg, ITransportHeaders requestHeaders, Stream requestStream, IMessage& responseMsg, ITransportHeaders& responseHeaders, Stream& responseStream)

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleRe turnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateI nvoke(MessageData& msgData, Int32 type)
at Novell.Zenworks.NotifyIcon.Remoting.IZenIconModule Server.get_MenuGroups()
at Novell.Zenworks.NotifyIcon.UI.SysTrayIcon.BuildMen uItems(Boolean isMenuOpening)
at Novell.Zenworks.NotifyIcon.UI.SysTrayIcon.OnContex tMenuOpening(Object sender, CancelEventArgs e)
at System.Windows.Forms.ToolStripDropDown.OnOpening(C ancelEventArgs e)
at System.Windows.Forms.ToolStripDropDown.SetVisibleC ore(Boolean visible)
at System.Windows.Forms.ToolStripDropDown.Show(Int32 x, Int32 y)
at System.Windows.Forms.ContextMenuStrip.ShowInTaskba r(Int32 x, Int32 y)
at System.Windows.Forms.NotifyIcon.ShowContextMenu()
at System.Windows.Forms.NotifyIcon.WndProc(Message& msg)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)