In Windows 10 system, in order to speed up the display of icons, the icon of a file or program will be cached when the icon is displayed for the first time. After that, when we display the icon again, the system will read the data directly from the cache, thus greatly speeding up the display.

Because of this, when there is a problem with the cache file, it will cause the system icon to display abnormally. Now that we have found the reason and the solution is simple, we just need to delete the problematic icon cache file and let the system re-establish the icon cache.

Second, the operation method

First, since the icon cache file is a hidden file, we need to change the setting to "Show all files" in Explorer. Operation method:

1) Open any folder.

2) Click "View" menu, and then check "Hide items".

At the same time, press the shortcut key Win+R, enter %localappdata% in the open running window, and press Enter.

In the open folder, locate Iconcache.db and delete it.

Right-click the taskbar and click Task Manager in the pop-up menu.

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Find "Windows Explorer" in Task Manager, right-click and select "Restart" to rebuild the icon cache.