Wsus 3.0 Server 2012 Event ID 7053

Usually WSUS just works. Server 2012 with WSUS. MMC locks up and event log show:

The WSUS administration console has encountered an unexpected error. This may be a transient error; try restarting the administration console. If this error persists,

Try removing the persisted preferences for the console by deleting the wsus file under %appdata%\Microsoft\MMC\.

The WSUS administration console has encountered an unexpected error. This may be a transient error; try restarting the administration console. If this error persists,

Try removing the persisted preferences for the console by deleting the wsus file under %appdata%\Microsoft\MMC\.

The WSUS administration console has encountered an unexpected error. This may be a transient error; try restarting the administration console. If this error persists,

Try removing the persisted preferences for the console by deleting the wsus file under %appdata%\Microsoft\MMC\.

System.Threading.ThreadAbortException -- Thread was being aborted.

Source
System

Stack Trace:
at System.Net.ConnectStream.WriteHeaders(Boolean async)
at System.Net.HttpWebRequest.EndSubmitRequest()
at System.Net.Connection.SubmitRequest(HttpWebRequest request, Boolean forcedsubmit)
at System.Net.ServicePoint.SubmitRequest(HttpWebRequest request, String connName)
at System.Net.HttpWebRequest.SubmitRequest(ServicePoint servicePoint)
at System.Net.HttpWebRequest.GetResponse()
at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request)
at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request)
at Microsoft.UpdateServices.Internal.DatabaseAccess.ApiRemotingCompressionProxy.GetWebResponse(WebRequest webRequest)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at Microsoft.UpdateServices.Internal.ApiRemoting.ExecuteSPGetSubcategories(String preferredCulture, Guid categoryId)
at Microsoft.UpdateServices.Internal.DatabaseAccess.AdminDataAccessProxy.ExecuteSPGetSubcategories(String preferredCulture, Guid categoryId)
at Microsoft.UpdateServices.Internal.BaseApi.UpdateCategory.GetSubcategories()
at Microsoft.UpdateServices.UI.SnapIn.Common.Common.PopulateUpdateCategoryTree(TreeNode parentNode, UpdateCategoryCollection categories, UpdateCategoryCollection categoriesToSelect)
at Microsoft.UpdateServices.UI.SnapIn.Common.Common.PopulateUpdateCategoryTree(TreeNode parentNode, UpdateCategoryCollection categories, UpdateCategoryCollection categoriesToSelect)
at Microsoft.UpdateServices.UI.SnapIn.Dialogs.UpdateCategorySettingsDialog.LoadCategoriesTabValues()
at Microsoft.UpdateServices.UI.SnapIn.Dialogs.UpdateCategorySettingsDialog.ApplyConfigurationToControls()
at Microsoft.UpdateServices.UI.SnapIn.Dialogs.BaseSettingsDialog.b__0()
at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
** this exception was nested inside of the following exception **

System.Reflection.TargetInvocationException -- Exception has been thrown by the target of an invocation.

Source
Microsoft.ManagementConsole

Stack Trace:
at Microsoft.ManagementConsole.Internal.SnapInMessagePumpProxy.OnThreadException(Object sender, ThreadExceptionEventArgs e)
at System.Windows.Forms.Application.ThreadContext.OnThreadException(Exception t)
at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
** this exception was nested inside of the following exception **

System.Reflection.TargetInvocationException -- Exception has been thrown by the target of an invocation.

Source
Microsoft.ManagementConsole

Stack Trace:
at Microsoft.ManagementConsole.Internal.SnapInMessagePumpProxy.OnThreadException(Object sender, ThreadExceptionEventArgs e)
at System.Windows.Forms.Application.ThreadContext.OnThreadException(Exception t)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
at Microsoft.ManagementConsole.Internal.ConsoleDialogHost.ShowDialog(WaitCursor waitCursor, ShowDialogCallback callback)
at Microsoft.UpdateServices.UI.SnapIn.Pages.SettingsSummaryPage.UpdateCategoryAndClassificationSettingsTitle_LinkClicked(Object sender, LinkLabelLinkClickedEventArgs e)