Now right-click on the process of Windows Explorer (in the Processes tab) and in the menu shown, choose Restart.
Right-click on the Taskbar of your system and in the context menu, select Task Manager.
Then click on Apply/OK and check if the icons are clear of the grey X’s.
Now navigate to the View tab and select the option of Show Hidden Files, Folders, or Drives.
Hit the Windows key and type File Explorer Options.
Then check if the grey X’s have been removed.
Now, in the right pane, click on Desktop Icon Settings and then enable/disable some of the desktop icons.
In this context, changing the folder options may solve the problem. There are different folder options on your system that can trigger the current icons issue. Solution 1: Change the Folder Options of Your System
Check if moving the files/folders to a different location and moving back resolves the issue or renaming them solves the problem.
Make sure to remove any sharing from the problematic files/folders.
Sign-out and sign back in or rebooting the PC resolves the issue.