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VsJITDebugger unhandled Microsoft .NET exception

Discussion in 'Software Development' started by CsharpMajor, Nov 10, 2018.

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  1. CsharpMajor

    CsharpMajor Thread Starter

    Nov 9, 2018

    We have an executable that intentionally throws an error so that JIT debugger will pop up (Not through Attach to Process).
    However, the pop up doesn't happen recently and I saw the Windows Logs error:

    An unhandled Microsoft .NET Framework exception occurred in <program>.exe [9288]. Just-In-Time debugging this exception failed with the following error: The operation attempted is not supported.
    Check the documentation index for 'Just-in-time debugging, errors' for more information.

    I checked https://docs.microsoft.com/en-us/vi...-using-the-just-in-time-debugger?view=vs-2017 but the troubleshooting doesn't seem to work for me.

    Do you have an idea why the JIT debugger won't start? As far as I can understand, the exe's .NET Framework version (, based on the .config file) is a .NET framework version that the JIT debugger doesn't support.

    Recently, I had problems creating a new project in our solution since the target framework is v4.5.2 but what I created was 4.6.1 (default framework when I added the new project). Is this connected to my issue? I am running out of ideas... @[email protected]

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