Deleting thumbnail cache and resetting it solved this problem for many users, including me. Solution 3: Delete thumbnail cacheĬorrupted thumbnail cache seems to be the most common reason for this problem. When you will click on OK, the folder icon may be fixed. Here uncheck the checkbox next to Read-only in the Attributes section. Right-click on the folder and select properties from it. Simply remove the Read-only attribute and see if it fixes the problem. There is a chance that the Read-only attribute of the folder may be causing the folder to show an icon with a black background. When you will click on OK, the default icon will be restored and most probably the black background issue will be resolved as well. Now go back to the same Change icon option, and this time click on the Restore Defaults button instead. Afterward, click on OK again to apply the changes.

Here randomly select any icon you want and click on OK to select it. In the properties, move to the Customize tab and click on the Change icon button. Right-click on the affected folder and select Properties from the context menu.

However, many users have reported that this solution fixed the problem permanently for them. This solution only temporarily fixed my problem, as it turned black again after restarting. Read Also: How to Access Restricted Folders in Windows Solution 1: Restore default icon If you are dealing with the same problem, then I can help you fix it using the same methods I have tried. I also faced this issue and after messing around with multiple solutions, I managed to fix it for good. It may happen because of corrupted files, a problem with the folder thumbnail cache or with the Windows image. It doesn’t affect the data inside it in any way it simply makes the folder look, well… ugly.

There’s seemingly a bug in Windows 10 that adds a black background to folders.

Windows black and white shortcut