Microsoft have a number of tools at their disposal and often bundle them with the OS. One such tool or environment is the Visual C++ runtime. It's most often seen that due to a form of corruption in your OS'es installation or in the installer itself, you can see an mscvr100.dll file is missing error which prevents an application or a number therein from starting. As frustrating as it may seem, there's a simple fix to this issue.
- ■Open your web browser and type
www.microsoft.com/en-us/download/details.aspx?id=5555
or
www.microsoft.com/en-us/download/details.aspx?id=14632
in your address bar and hit enter
If you're on a 32 bit architecture of your OS then the first link is sufficient but if you're on a 64 bit architecture of your OS then you'll need to download from both sites and run both executables.
■Scroll down the page and select the language from the drop down menu
■Click on the red download button and save to a desired location
■Locate the executable and run it in an elevated command, i.e; Right click installer>Run as Administrator
■Click on continue. Please be patient as the installation may take some time. Once finished you can click on close.
By following the above steps and completing installation you should now be able to open your applications sans the error message.