How to solve the problem "Cannot view the real picture of the icon, icons are changed into generic pictures".

How to solve the problem "Cannot view the real picture of the icon, icons are changed into generic pictures".

Once I saw that all my icons are changed into generic pictures, how I solved this???
1. Click on Start Menu.
2. Go to Control Panel.
3. Click Appearance and Personalization.
4. Click File Explorer Options.
5. Go to View.
6. Click Restore Defaults.(!!!!Not Reset Folders).
7. Click Apply and then click OK.
Now you are done!!!!!