I have 2008 r2 64bit server that is stuck on installing updates. It shows message "Please do not power off or unplug your machine. Installing 57 of 61.." This message is shown for 3 hours now. I was trying to connect to this server using mmc.

runas /user:AdministratorAccountName@ComputerName "mmc %windir%\system32\compmgmt.msc"

RUNAS ERROR: Unable to run - mmc C:\Windows\system32\compmgmt.msc 1311: There are currently no logon servers available to service the logon request.

What else can I do?

Update: Remote Desktop does not work. It just disappear after entering username and password from Win7-64 computer

Update: I have disconected server. Now Server Manager in Roles Summary shows message "Unexpected error refreshing Server Manager: The remote procedure call failed." Event log shows

Could not discover the state of the system. An unexpected exception was found:
System.Runtime.InteropServices.COMException (0x800706BE): The remote procedure call failed. (Exception from HRESULT: 0x800706BE)
   at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
   at Microsoft.Windows.ServerManager.ComponentInstaller.ThrowHResult(Int32 hr)
   at Microsoft.Windows.ServerManager.ComponentInstaller.CreateSessionAndPackage(IntPtr& session, IntPtr& package)
   at Microsoft.Windows.ServerManager.ComponentInstaller.InitializeUpdateInfo()
   at Microsoft.Windows.ServerManager.ComponentInstaller.Initialize()
   at Microsoft.Windows.ServerManager.Common.Provider.RefreshDiscovery()
   at Microsoft.Windows.ServerManager.LocalResult.PerformDiscovery()
   at Microsoft.Windows.ServerManager.ServerManagerModel.CreateLocalResult(RefreshType refreshType)
   at Microsoft.Windows.ServerManager.ServerManagerModel.InternalRefreshModelResult(Object state)

Update: Manual update hangs on (Installing update 58 of 62...) Seurity Update for Windows Server 2008 R2 x64 Edition (KB979309)

Update: It could be an issue with that admin user was renamed