msvcr100_clr0400.dll: download the file and fix the error

32-bit and 64-bit Microsoft Visual C++ 2010 Scanned by antivirus

msvcr100_clr0400.dll is a file of Microsoft Visual C++ 2010, the runtime library that a great many games and programs need to run. Its official description: “Microsoft® .NET Framework”, by Microsoft Corporation.

If it is missing or damaged, Windows displays for example: “The program can't start because msvcr100_clr0400.dll is missing from your computer.” Two methods can fix the error, below.

Method 1 · quick · about 1 minute

Download only msvcr100_clr0400.dll

Ideal if only this file is reported missing: you replace a single file, without reinstalling anything.

⇓ Download the 64-bit version ⇓ Download the 32-bit version .zip file: the DLL + its instructions · downloaded 6,758 times

Which version should you choose? The one that matches the program showing the error, not Windows: a 32-bit game or program needs the 32-bit DLL, even on 64-bit Windows. If in doubt, try the 64-bit version first, then the 32-bit one if the error persists or becomes “0xc000007b”.

Version: 14.6.1586.0 (64-bit)10.00.40219.1 (32-bit)
Size: 18.6 KB (64-bit)773.97 KB (32-bit)
Architecture: 64-bit (x64)32-bit (x86)
Publisher: Microsoft Corporation

Then:

Extract msvcr100_clr0400.dll from the zip file and copy it to the folder of the program showing the error (where its .exe file is).
Still getting the error? Copy it to C:\Windows\System32 (64-bit DLL) or C:\Windows\SysWOW64 (32-bit DLL on 64-bit Windows), then restart.

SHA-256 (64-bit): c7ec7ed5facb5b5b27fb34eae1b28e1b160949cf82f59c2175a93376f4f5bb3f · Check on VirusTotal
SHA-256 (32-bit): 60c06e0fa4449314da3a0a87c1a9d9577df99226f943637e06f61188e5862efa · Check on VirusTotal · Product: Microsoft® .NET Framework

Method 2 ·complete · official method · 5 to 10 minutes

Reinstall Microsoft Visual C++ 2010

Microsoft still offers the Microsoft Visual C++ 2010 package (an older version, still required by many games). It restores msvcr100_clr0400.dll and the files of the same family.

Official Microsoft page of the Visual C++ packages

On the Microsoft page, download the Visual C++ 2010 package in its x86 version, and also x64 if your Windows is 64-bit.
Run them, then restart your computer. Already installed? Settings › Apps › the 2010 package › Modify › Repair.

Complete guide: Visual C++ errors (msvcp, msvcr, vcruntime)

Error messages related to msvcr100_clr0400.dll

The program can't start because msvcr100_clr0400.dll is missing.
Failed to load msvcr100_clr0400.dll
Error loading msvcr100_clr0400.dll. The specified module could not be found.

Why does this error occur?

Microsoft Visual C++ 2010 is not installed: new computer, reinstalled Windows, or a program that does not install its own prerequisites.
The file was deleted or damaged: another program was uninstalled, an overly aggressive cleanup, an antivirus.
Wrong architecture: a 32-bit program cannot use the 64-bit version of the DLL, and vice versa.

Files of the same family (Microsoft Visual C++ 2010)

mfc100.dll mfc100u.dll msvcp100.dll msvcr100.dll vcomp100.dll

Frequently asked questions

Is msvcr100_clr0400.dll a virus?

No: it is a legitimate Microsoft file. Only be wary of a copy found outside C:\Windows or a program’s folder; you can compare its SHA-256 fingerprint with the one shown on this page.

Should I install the 32-bit or the 64-bit version?

On 64-bit Windows, install both: a 32-bit game needs the x86 version, even on 64-bit Windows. On 32-bit Windows, only the x86 version can be installed.