After upgraded from Vista x64 Home Premium to 7 x64 all other functions were worked fine but scheduled tasks.Scheduled Tasks open normally and I can review tasks but if I try to create new task, import one or just open old tasks properties, MMC crashes. I can create new Basic Task, but either there I cannot change its properties. If I choose at the end if creating task "Open the properties dialog for this task when I click finished", MMC crashes.If I choose tasks condition at Task Scheduler Library for preview MMC just crash, but every other case MMC shows following information: 1st dialog window: Title: Task Scheduler MMC has detected an error in a snap-in and will unload it.Option buttons: 1. Report this error to Microsoft, and then shut down MMC (Which I'm done) 2. Unload the snap-in and continue running When clickin the second option and OK, following appears: Dialog titled:Unhandled Exception in Managed Code snap-in Body text: fx:{c7b8fb06-bfe1-4c2e-9217-7a69a95bbac4}The system cannot find the file specified. (Exception from HRESULT-exception: 0x80070002) Exception type:System.IO.FileNotFoundException Exception stack trace: at Microsoft.Windows.ManagementUI.CombinedControls.INetwork.GetName() at Microsoft.Windows.ManagementUI.CombinedControls.UINetwork.GetUINetwork(INetwork network) at Microsoft.Windows.ManagementUI.CombinedControls.NetworkListManager.GetNetworkList() at Microsoft.Windows.ManagementUI.CombinedControls.ControlTaskConditions.PopulateNetworkComboBox() at Microsoft.Windows.ManagementUI.CombinedControls.ControlTaskConditions.InitializeConditions() at Microsoft.Windows.ManagementUI.CombinedControls.EditTaskDialog.InitializeView() at Microsoft.Windows.ManagementUI.CombinedControls.EditTaskDialog.Initialize(UITaskFolder folder, String taskName, String title, UserChoice userAction, BaseResultsControl inOwnerView, String inXmlText) kohteessa Microsoft.Windows.ManagementUI.CombinedControls.BaseResultsControl.EditTask(UITaskFolder folder, String taskName) at System.Windows.Forms.Control.OnDoubleClick(EventArgs e) at System.Windows.Forms.ListView.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) I have googled for solution but did not find practically anything:There is one registry key that include two entries with path c:\windows\help\taskscheduler.chm, but if I put the file there it won't help. If I modify or remove these two registry entries, they always come back as they were.I have uninstalled Visual Studio 2008 standard edition and installed it again. Ihave also uninstalled and reinstalled .net framework 3.51 via control panel, but nothing seems to solve problem. I have also taken ownership of mmc.exe and taskschd.msc ect. Could someone help me, please... This makes me nuts

This issue occurs if mmc cannot change related Registry keys. I suggest that you temporary disable the anti-virus and check the result again. If the issue persists, please disable all startup items and third party services when booting. This method will help us determine if this issue is caused by a loading program or service. Please perform the following steps:1. Click the Start Button type "msconfig" (without quotation marks) in the Start Search box, and then press Enter.Note: If prompted, please click Continue on the User Account Control (UAC) window.2. Click the "Services" tab, check the "Hide All Microsoft Services" box and click "Disable All" (if it is not gray). 3. Click the "Startup" tab, click "Disable All" and click "OK".Then, restart the computer. When the "System Configuration Utility" window appears, please check the "Don't show this message or launch the System Configuration Utility when Windows starts" box and click OK.Please test this issue in the Clean Boot environment, if the issue disappears in the Clean Boot environment, we can use a 50/50 approach to quickly narrow down which entry is causing the issue.Arthur Xie - MSFT

Hi, thanks for your advice, but it didn't help. Same error with same error messages occured also when tested after boot with no 3rd party services and no startup programs.

Same error, same steps, same result. Error appears even after disabling everything. Two areas cannot be accessed in the Management console: * scheduled tasks * eventogs Is there anything common between these two areas, which might help to narrow down the problem?

After upgraded from Vista x64 Home Premium to 7 x64 all other functions were worked fine but scheduled tasks. Scheduled Tasks open normally and I can review tasks but if I try to create new task, import one or just open old tasks properties, MMC crashes. I can create new Basic Task, but either there I cannot change its properties. If I choose at the end if creating task "Open the properties dialog for this task when I click finished", MMC crashes. If I choose tasks condition at Task Scheduler Library for preview MMC just crash, but every other case MMC shows following information: 1st dialog window: Title: Task Scheduler MMC has detected an error in a snap-in and will unload it. Option buttons: 1. Report this error to Microsoft, and then shut down MMC (Which I'm done) 2. Unload the snap-in and continue running When clickin the second option and OK, following appears: Dialog titled: Unhandled Exception in Managed Code snap-in Body text: fx:{c7b8fb06-bfe1-4c2e-9217-7a69a95bbac4} The system cannot find the file specified. (Exception from HRESULT-exception: 0x80070002) Exception type: System.IO.FileNotFoundException Exception stack trace: at Microsoft.Windows.ManagementUI.CombinedControls.INetwork.GetName() at Microsoft.Windows.ManagementUI.CombinedControls.UINetwork.GetUINetwork(INetwork network) at Microsoft.Windows.ManagementUI.CombinedControls.NetworkListManager.GetNetworkList() at Microsoft.Windows.ManagementUI.CombinedControls.ControlTaskConditions.PopulateNetworkComboBox() at Microsoft.Windows.ManagementUI.CombinedControls.ControlTaskConditions.InitializeConditions() at Microsoft.Windows.ManagementUI.CombinedControls.EditTaskDialog.InitializeView() at Microsoft.Windows.ManagementUI.CombinedControls.EditTaskDialog.Initialize(UITaskFolder folder, String taskName, String title, UserChoice userAction, BaseResultsControl inOwnerView, String inXmlText) kohteessa Microsoft.Windows.ManagementUI.CombinedControls.BaseResultsControl.EditTask(UITaskFolder folder, String taskName) at System.Windows.Forms.Control.OnDoubleClick(EventArgs e) at System.Windows.Forms.ListView.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) I have googled for solution but did not find practically anything: There is one registry key that include two entries with path c:\windows\help\taskscheduler.chm, but if I put the file there it won't help. If I modify or remove these two registry entries, they always come back as they were. I have uninstalled Visual Studio 2008 standard edition and installed it again. I have also uninstalled and reinstalled .net framework 3.51 via control panel, but nothing seems to solve problem. I have also taken ownership of mmc.exe and taskschd.msc ect. Could someone help me, please... This makes me nuts I am having EXACTLY the same problem. I upgraded from Vista to Windows 7 Professional Build 7601 Service Pack 1. I can not use event viewer or task scheduler and have not been able to do so since upgrading. The MMC crashes and says a snap-in is unavailable. Dialog: Unhandled exception in managed code snap in FX:{c7b8fb07-bfe1-4c2e-9217-7a69a95bbac4} Exception has been thrown by the target of an invocation. Exception type: System.Reflection.TargetInvocationException Exception stacktrace: at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandle& ctor, Boolean& bNeedSecurityCheck) at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean fillCache) at System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache) at System.Activator.CreateInstance(Type type, Boolean nonPublic) at Microsoft.ManagementConsole.FormView.InternalInitialize() at Microsoft.ManagementConsole.View.HandleInitializationRequest(IRequestStatus requestStatus) at Microsoft.ManagementConsole.View.ProcessRequest(Request request) at Microsoft.ManagementConsole.ViewMessageClient.ProcessRequest(Request request) at Microsoft.ManagementConsole.Internal.IMessageClient.ProcessRequest(Request request) at Microsoft.ManagementConsole.Executive.RequestStatus.BeginRequest(IMessageClient messageClient, RequestInfo requestInfo) at Microsoft.ManagementConsole.Executive.SnapInRequestOperation.ProcessRequest() at Microsoft.ManagementConsole.Executive.Operation.OnThreadTransfer(SimpleOperationCallback callback) Did anyone find a fix for this annoying problem?