Manually repair .NET Framework
Windows 10, 8.1 and 8
- On your keyboard, press Windows+R to open the Run window.
- Type Control Panel, then select OK.
- Select Uninstall a Program, then Turn Windows features on or off.
- Verify that .NET Framework 4.5 or later (4.7) is enabled.
- If the box for .NET Framework 4.5 or later is not enabled (not filled in), enable it by clicking the box. Select OK, then reboot the computer.
- If .NET Framework 4.5 or later is already enabled, repair .NET Framework by clearing the box and rebooting the computer. After the reboot, re-enable .NET Framework and reboot the computer again.
- Verify that .NET Framework 3.5 SP1 is enabled.
- If the box for .NET Framework 3.5 SP1 is not enabled (not filled in), enable it by clicking the box. Select OK, then reboot the computer.
- If .NET Framework 3.5 SP1 is already enabled, repair .NET framework by clearing the box and rebooting the computer. After the reboot, re-enable .NET framework and reboot the computer again.
Note: If the box is blank or you get an error activating a component, please contact a qualified IT professional or Microsoft.