In some cases, the errors could indicate aregistryproblem, a virus or malware issue, or even ahardwarefailure.
Download the Visual C++ Redistributable for Visual Studio 2015and run it.
This will replace/restore the msvcr100.dll with the most recent copy provided by Microsoft.
Some users have had toalsoinstallMicrosoft Build Tools 2015to fix the error.
Restore the DLL file from the Recycle Bin.
The easiest possible cause of the “msvcr100.dll is missing” error is that you’ve mistakenly deleted it.
Run a virus/malware scan of your entire system.
Use System Restore to undo recent system changes.
Reinstall the programproducing the missing msvcr100.dll error.
If the glitch notice triggers when you use a particular program, reinstalling that program might help.
Copy the msvcr100.dll filefrom the\System32\folder and paste it into the\SysWOW64\folder.
The full paths of these folders areC:\Windows\System32andC:\Windows\SysWOW64.
Just right-click and copy the DLL file from the first folder, and then paste it into the second.
Install any available Windows updates.
Manyservice packsand otherpatchesreplace or update some of the hundreds of Microsoft-distributed DLL files on your setup.
This DLL file could be included in one of those updates.
Test your memoryand thentest your hard drive.
If the hardware fails any of your tests, replace the memory orreplace the hard driveas soon as possible.
Repair your installation of Windows.
Use a free registry cleanerto repair DLL related issues in the registry.
A free registry cleaner program may be able to help by removing invalidregistry entriesthat might be causing the error.
We rarely recommend the use of registry cleaners.
Perform a clean installation of Windows.
This will erase everything from thehard driveand install a fresh copy of Windows.
If none of the steps above correct the error, this should be your last course of action.
All the information on your hard drive will be erased during a clean install.
Troubleshoot for a hardware problemif any msvcr100.dll errors persist.
After a clean install of Windows, your DLL problem can only be hardware-related.
There are several ways msvcr100.dll errors can show up on your box.
There are manyreasons why downloading a DLL file like that is a bad idea.
Some games and applications may need to have a copy of msvcr100.dll in their own software directories.
