.NET Framework Could not Load File or assembly RRS feed

  • Question

  • ************** Exception Text **************
    System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.mshtml, Version=7.0.3300.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
    File name: 'Microsoft.mshtml, Version=7.0.3300.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
       at maper.From1.msn_Tick(Object sender, EventArgs e)
       at System.Windows.Forms.Timer.OnTick(EventArgs e)
       at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
       at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

    WRN: Assembly binding logging is turned OFF.
    To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
    Note: There is some performance penalty associated with assembly bind failure logging.
    To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

    ************** Loaded Assemblies **************
        Assembly Version:
        Win32 Version: 2.0.50727.4016 (NetFxQFE.050727-4000)
        CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
        Assembly Version:
        Win32 Version:
        CodeBase: file:///C:/Program%20Files/Home%20Browsing/IE%20Internet%20Helper/maper.exe
        Assembly Version:
        Win32 Version: 8.0.50727.4016 (NetFxQFE.050727-4000)
        CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualBasic/
        Assembly Version:
        Win32 Version: 2.0.50727.4016 (NetFxQFE.050727-4000)
        CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/
        Assembly Version:
        Win32 Version: 2.0.50727.4016 (NetFxQFE.050727-4000)
        CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/
        Assembly Version:
        Win32 Version: 2.0.50727.4016 (NetFxQFE.050727-4000)
        CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/
        Assembly Version:
        Win32 Version: 2.0.50727.4016 (NetFxQFE.050727-4000)
        CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Runtime.Remoting/
        Assembly Version:
        Win32 Version: 2.0.50727.4016 (NetFxQFE.050727-4000)
        CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Configuration/
        Assembly Version:
        Win32 Version: 2.0.50727.4016 (NetFxQFE.050727-4000)
        CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Xml/
    Monday, October 12, 2009 9:19 PM


  • Hi Dieselroar,

    Thank you for your post.

    Some clarification with you:
    Did you receive this Exception in JIT debugging dialog box?
    When did you receive this JIT debugging dialog box?
    Is this an application that you have written? Or is this some 3rd party application that is running on your machine?

    Based on your description, it might be hard to troubleshoot this issue since there would be many causes. It might be caused by some application when you run your PC.

    Based on the stack trace, it looks as if it is caused IO exception. This kind of exception will be thrown when an attempt to access a file that does not exist on disk fails.
    For more information, please see: and
    To troubleshoot this exception, you can try this helpful document:
    Troubleshooting Exceptions: System.IO.FileNotFoundException

    However, to narrow down the possible cause of corrupted .NET Framework, we can try Verification tool to verify .NET Frameworks on your machine.
    You also can try the following point to deal with the case:
    Reboot the machine into Safe Mode. Do you still have the problem? This can isolate some third party application/driver's interference.

    After doing some research, for maper.exe, it seems to be a virus. Could you please try running Anti-virus software to have a check?

    If you don't want to see Just-In-Time Debugging dialog box when you start your PC, you can just simply turn off this feature.
    Please see:  How to: Enable/Disable Just-In-Time Debugging

    Hope this helps. If you have any concern, please feel free to let me know.

    Best regards,
    Yichun Chen

    (This response contains a reference to a third party World Wide Web site. Microsoft is providing this information as a convenience to you. Microsoft does not control these sites and has not tested any software or information found on these sites; therefore, Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. There are inherent dangers in the use of any software found on the Internet, and Microsoft cautions you to make sure that you completely understand the risk before retrieving any software from the Internet.)
    Please remember to mark the replies as answers if they help and unmark them if they provide no help.
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    • Marked as answer by YiChun Chen Tuesday, October 20, 2009 3:34 AM
    Wednesday, October 14, 2009 7:32 AM