Mscvr100.dll Missing or Not Found on Windows [Solved]

Sophie Luo, in Technical Tips

Recently, I met this annoying problem: when I tried to use some program on my computer, the above error message popped up. It says that The program can’t start because MSVCR100.dll is missing from your computer

Then I did some search on MSVCR100.dll and found that quite some people have this problem as well. If you are one of us, try the fixes below. One of them solves the problem for me and you may want to have a try. 

NOTE: The errors you see may have different wordings: 

  • Msvcr100.dll Not Found 
  • This application failed to start because msvcr100.dll was not found. Re-installing the application may fix this problem. 
  • Cannot find (path)\msvcr100.dll
  • The file msvcr100.dll is missing. 
  • Cannot start (program name). A required component is missing: msvcr100.dll. Please install (program name) again. 
    But basically, they are talking about the same thing, that something is missing or corrupted in your computer and you are not able to use or install certain programs. 

Step 1: Download Microsoft Visual C++2010 Service Pack 1 Redistributable Package 

Step 2: Run Virus Scan

Step 3: Install Windows Update

Step 4: Copy Msvcr100.dll From C:\Windows\System32

Step 5: Undo Recent System Change

WARNING: Before we move on, it is last thing you do to download msvcr100.dll from any DLL download website. We can get it from legitimate source. Why take the risk? 

Step 1: Download Microsoft Visual C++2010 Service Pack 1 Redistributable Package 

1) Download the package from here if you are with 64-bit operating system. 

Download the package from here if you are with 32-bit operating system. 

2) When the download finishes, run the installation as instructed. 

This is the most helpful step, try to apply this. If you have any problems downloading or installing this update package, feel free to leave us comment and we will see what we can do to help. 🙂 

Step 2: Run Virus Scan

In some cases, missing msvcr100.dll could indicate virus or malware infections. 

If you have not yet performed a virus check on your PC, do it now. It’s not too late. 

You can choose to use a third-party antivirus program to do a full system scan. Or if you don’t want to download one, use Windows Defender instead. 

Windows Defender is the built-in antivirus program that is turned on by default in Windows 10. And in versions after Creators Update, it cannot be turned off manually. 

To use Windows Defender to scan your system for possible virus: 

1) On your keyboard, type in windows defend and then choose Windows Defender Security Center from the list. Note the name could be different on different versions of OSs. 

2) If you are with Creators Update and the last scan date is today and the result is good, no need for you to worry about having virus anymore. 

3) In other versions or builds, click the Scan now button on the right side of the pane to start the scanning process. 

Step 3: Install Windows Update

Newly releases Windows update patches and packages could replace or update some of the DLL files on your machine. Msvcr100.dll could be one of them. 

1) If you are with Windows 7, on your keyboard, press Windows logo key, and then choose Control Panel. Then click Windows Update

If you are with Windows 10, follow the path: Windows logo key > Settings > Update & security

2) In Windows Update window, click Check for updates

3) If found any, download them all. When the download and install finish, restart your PC for the changes to take effect. 

Step 4: Copy Msvcr100.dll From C:\Windows\System32

If you are sure that you have the DLL file in the 32-bit folder but are having troubles with 64-bit programs accessing it, you should give this option a try. 

1) Go to C:\Windows\System32. Press M key to faster locate msvcr100.dll file in the folder. Then right click it and choose Copy

2) Now go to C:\Windows\SysWOW64 and paste the copied msvcr100.dll file here. 

Step 5: Undo Recent System Change

If this problem happens all of a sudden, try to find out whether you have deleted some files or programs or device drivers. 

If you are not sure what changes you have done to your machine, it is suggested that you do a system restore. 

To do a system restore in Windows 7, you can follow the instructions here

To do a system restore in Windows 10, you can follow the instructions here

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