If your app is old, it might be a 32-bit application even if your Windows is 64-bit. In that case, you also need to install the x86 version of the 2008 SP1 redistributable.
The installer is straightforward. If it tells you that a "newer version is already installed," you may already have the library, or you might need the Security Update version (KB2538856). download file vcredistx642008sp1x64exe verified
Are you getting a when you try to run your program, or did the installation resolve the issue? If your app is old, it might be
While not always required, a quick reboot ensures that the new pathing is recognized by your applications. Common Troubleshooting If your app is old
Right-click the file and select "Run as administrator" to ensure the libraries are correctly registered in the Windows System32 folder.