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Unable to load Jit Compiler: (Mscorjit.dll)

Anonymous
2012-12-04T10:17:59+00:00

Using W8 x64 Pro. I'm at a loss here. Whenever I try to run this program (that worked in both Vista x64 as well 7 x64) I get this error:

Unable to load Jit Compiler: (mscorjit.dll): file may be missing or corrupt. Please check or rerun setup.

I know this has to do with .NetFrameWork 2.0. I also know that to uninstall and re-install .NetFrameWork 2.0 in Windows 8 you go to the Control Panel, Turn Windows Features On or Off and then uncheck .NetFrameWork 3.5. I did that, restarted, rechecked .NetFrameWork 3.5, still had the same issue.

So I went ahead and tried the .NetFrameWork repair tool, that was lacking at best but I ran it anyway, needless to say it didn't fix the problem.

I ran a sfc /scannow which found no error.

I even took out my W7 harddrive found the 4 locations for mscorjit.dll and replaced them in the right folders (the x64 dlls with the x64 dlls and the x86 with the x86). Now I no longer get the Jit Compiler error, but the program never loads, so that is no help. So I did a system restore to before I started messing with the framework files, it didn't work but I'm at a "clean slate" again.

I've done everything I can think of besides re-installing Windows.

EDIT - Ok apparently this problem is happening now with another program. There is obviously something wrong with the Windows 8 pre-installed .netframework 3.5. Is there a way to forcefully instal the .netframework 3.5 exe, when I try to install it just auto-configures the one pre-built into Windows.

Windows for home | Previous Windows versions | Performance and system failures

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  1. Anonymous
    2012-12-05T14:09:39+00:00

    Neither method 1 or 2 fixed the problem. What I would like to be able to do is force a reinstall of .NetFrameWork 3.5 via the downloadable exe, however that doesn't' seem to be an option with Windows 8 as when I run the exe it auto-loads the pre-built in .NetFrameWork.

    UPDATE - I bit the bullet and found my old SSD (only 64gb and I don't use it anymore) and decided to reinstall Windows 8. I installed NOTHING except for the program I am trying to run, and i still get the same error. This is obviously a problem with Windows 8 and .NetFrameWork 2.0. I need a fix badly.

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  2. Anonymous
    2012-12-05T04:51:48+00:00

    Hi JessicaRubix,

    Thank you for posting the query in Microsoft Communities. From the problem description I understand that you are not able to access the application Jit Compiler.  Provide the following information:

    ·         Have you made any changes on the computer prior to the issue?

    Follow these methods.

    Method 1: Uninstall and re-install the application. Follow these steps:

    a)    Press Windows + R key on the keyboard. Type control panel in run prompt. Click Programs, and then click Programs and Features.

    b)    Select a program, and then click Uninstall. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.

    Method 2: Perform a **Clean Boot****** to see if there is any software conflict as clean boot helps to eliminate software conflicts.

    Note: After performing the troubleshooting steps in clean boot, follow Step 3 from the link to start the computer to Normal startup mode.

    Let us know if you need further assistance.

    Thanks.

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