✿ First of all, you have to close all the on-going applications ✿ Locate the Windows Start option and then click on Control Panel  ✿ After this hit on Add or Remove option  ✿ Choose Microsoft .Net Framework  ✿ Hit on the Uninstall/Change, Remove, or Repair button ✿ It will launch a Wizard which says Setup ✿ Click on the Repair button and then hit on Next option ✿ The repair process will start  ✿ After this, it is suggested to restart the system