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Published: March 28, 2015 | Applies to:

Learn how to deal with "program can't start because mfc100u.dll or MSVCR100.dll is missing from your computer" error for Windows 7 or later.

When you install a software on your system, you might have noticed that many programs adds additional Dynamic Link Libraries (.dll files) to your system. Basically, these files are supportive bases on which the installed software works correctly. Thus in some case if one of this .dll file is missing, the software may not work properly or even refuse to start.

In addition to .dll files, software also requires language dependency files in order to support the code by which software is written. Recently, we came around following error when we tried to start a software:

The program can’t start because mfc100u.dll is missing from your computer. Try reinstalling the program to fix this problem.

[FIX] The Program Cant Start Because mfc100u.dll Is Missing From Your Computer

Sometimes you may receive this similar error message instead:

The program can’t start because MSVCR100.dll is missing from your computer. Try reinstalling the program to fix this problem.

So you can see here that a single file is creating the whole issue. The case becomes more worst, when you search over the Internet to found this mfc100u.dll or MSVCR100.dll, but at last you’re unable to find one. To solve this kind of problem, best option is to try SFC /SCANNOW command in the administrative Command Prompt. Thus running System File Checker, is our first priority. If SFC found some integrity violations and is not able to repair your computer, then you may try the DISM commands mentioned here:

[FIX] Repair Your Windows 8 Using DISM Commands

Even after trying DISM commands, if issue still persists, then go to Control Panel -> All Control Panel Items -> Programs and Features and check if your system have Microsoft Visual C++ Redistributable package installed or not. If not, you can try these links to download various edition packages of your system architecture for Microsoft Visual C++ Redistributable:

Microsoft Visual C++ 2008 Redistributable Package [32-bit]

Microsoft Visual C++ 2008 SP1 Redistributable Package [64-bit]

Microsoft Visual C++ 2010 Redistributable Package [32-bit]

Microsoft Visual C++ 2010 Redistributable Package [64-bit]

After downloading the Microsoft Visual C++ Redistributable package from above links and installing it, you have to reboot your system. Finally restart the machine, you’ll find that error has been resolved.

Hope this helps! Learn how to change drive icons in File Explorer using imageres.dll properties.

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  • mfc120u.dll is missing
    after downgrading from win 10 to win 8 I started getting the above error message.
    how do I fix it? I have 64 bit operating system.

  • Kapil Arya

    ^^ Have you tried above mentioned fix? Do try it and see if it helps.

  • Mfc u.dll is missing and i cant open ableton i got window 7

  • when i go to CMD and type in “sfc” (scannow wont work) it says that i have to be a administrator running a console session in order to access the sfc utility. i dont know what it means? i am an admin on my pc so i dont know whats happening, any help wil be appreciated

  • *****UPDATE**

    done the command prompt thing, didnt work!

    also my pc already has the Microsoft Visual C++ 2010 Redistributable Package

    HELLLPPPP this is needed to start up my security so please respond fast!!!!!

  • thanks body

  • Kapil Arya

    ^^ Glad it helped! :)

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