Error:

.NET Framework initialization error: unable to find a version of the run time to run this application

Snapshot:

Workaround 1: [For Windows XP]

Install .NET Framework 2.0 SP1.

Workaround 2: [For Windows Vista, Windows 7 or Windows 8]

You must use “Turn Windows features on or off” in the Control Panel to install or configure Microsoft .Net Framework 3.5 SP1″

1. Go to: start/control panel/programs and features
2. On the top left you should see “Turn windows features on or off”.
3. Find “Microsoft .NET framework 3.5.1″ when the window opens
4. Click the + sign next to it to expand it so you can now see:                                          “Windows Communication Foundation HTTP Activation”                                          “Windows Communication Foundation HTTP non-Activation”
5. Make sure that there is a tick in both boxes and select OK.
6. Restart the System.

Workaround 3: [For Windows XP]

Clean the .NET Framework components completely from control panel and Follow the below 10 steps:

1. Open control panel, click Add\Remove Programs and uninstall the .NET Framework.
2. Run .NET Framework cleanup Utility to clean the .NET Framework components completely.Download: .NET Framework cleanup tool
3. If it prompts for System restart then restart it
4. Navigate to Windows folder: “C:\Windows\”
5. Rename folder “assembly” to “assembly1“
6. Rename folder “Microsoft.NET” to “Microsoft.NET1“
7. Open registry: Click Start | Run | type regedit.exe | Click OK.
8. Navigate To: “HKLM\Software\Microsoft” registry
9. Delete .NETFramework key
10. Install Microsoft .Net Framework 2.0 SP1.