Error - Product version that is being installed is old

Applies to: Visual Studio 2015

Symptoms

When you try to install Microsoft Visual Studio 2015, you receive the following error message:

The product version that you are trying to set up is earlier than the version already installed on this computer.

Resolution

Verify that the version of Visual Studio 2015 that you're downloading is not earlier than the currently installed version. If you determine that the new version is not earlier than the installed version, see this MSDN post for guidance to resolve this issue.