Yes. Downloading and installing this specific MSI file is the direct solution to that error. Once installed, the application that was failing to launch should work immediately without requiring a restart.
If the troubleshooter fails, you can manually remove the problematic reference: Open Regedit (Registry Editor) as an administrator. dotnethost8011winx64msi download fixed
If the GUID above doesn't match, search for dotnethost in regedit under HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall dotnethost8011winx64msi download fixed