Error: System Update Required for e-Form RS Pass Thru

Steps to solve the System Update Required error when you try to use Pass Thru to reach e-Form RS from Checkpoint.

Scenario

When you try to open e-Form RS Pass from Checkpoint, the Pass Thru web page shows the following error message.
System Update Required Unable to install or run this application. This application requires your system to be updated to Microsoft Common Language Version [version number]. Please contact your system administrator.

Cause

The likely cause of this error is that the version of Microsoft .NET Framework installed on your computer is older than version 4.0.

Solution

Download the current version of Microsoft .NET Framework from Microsoft's Download Center and install it.