[German]From time to time users are facing issues with missing DLL files in Windows 10. One issue is a missing msvcp100dll dll file. Here are a few hints, how to fix this issue.
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Some details about the issue
An attempt to launch an application stalls with an error message, that a DLL file from Microsoft VCR or MFC runtime is missing. A message 'The program can't start because MSVCP100.dll is missing from your computer. Try reinstalling the program to fix this problem.' or similar is shown.
The name of the dll file may vary (MFCU100.dll, MFCU120.dll, MFCU120U.dll etc.). But the root cause is the same, a library file (dll) from MFC or VCR run time environment, requested from the application, is missing. An Internet search will reveal many hits like here and here.
Fix #1: Reinstall the application
In many cases, it's sufficient to uninstall the faulty application program and re-install the whole application again. In best case the missing run time library files will also be re-installed. If that didn't help, try other fixes.
The file msvcr100.dll is missing
This dll is a library belongs to Microsoft Visual C++ 2010 run time environment. If that file is missing, applications compiled with VC2010 wont run. The solution: Just re-install the Microsoft Visual C++ 2010 Service Pack 1 redistributable package. This package may be downloades from this Microsoft site (see also). Note, that there are a 64 bit and a 32 bit package.
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Some Internet postings suggests (here) suggests a download of msvcp100.dll as a ZIP file, unpack it and copy it to the folder C:\Windows\System32 or for 64 bit systems to C:\Windows\SysWOW64 and restart Windows. The problem: The DLL will be downloaded from http://www.dll-files.com, which isn't a Microsoft source. I found also adware on this site, so a clear warning: Don't use this source.
If installing the DLL file didn't help, open an administrative command prompt and move to folder with the DLL file. Then enter regsvr32 msvcp100.dll to re-register the DLL.
MFCU120.dll is missing
This dll belongs to Microsoft Visual C++ runtime environment. Here I recommend to download the VC++ redistributable from here or download the 2013 version from icrosoft and install the package.
The problem with Microsoft's Visual C++ redistributable is, that we will have a couple of versions.
If that doesn't help, this post from Ableton suggests to execute the installer from the program's folder within ProgramData. You can also try to run a system file check (see Check and repair Windows system files and component store).
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