WAMP shows error 'MSVCR100.dll' is missing when installing

If the wamp server installation popup "MSVCR100.dll' is missing"error, You can solve this by the following methods.

The MSVCR100.dll file is part of the Microsoft Visual C++ 2010 redistributables. Download and install the appropriate version to solve the issue.

For Windows 32 : Be sure that you have installed the Visual C++ 2010 SP1 Redistributable Package x86 : VC10 SP1 vcredist_x86.exe

http://www.microsoft.com/download/en/details.aspx?id=8328

For Windows 64 : Be sure that you have installed the Visual C++ 2010 SP1 Redistributable Package x64 : VC10 SP1 vcredist_x64.exe

http://www.microsoft.com/download/en/details.aspx?id=13523