Hi, I'm John! I will help you with this.
Did the icons disappear only from the desktop, or are the programs/files also missing from File Explorer?
First, right-click an empty area of the desktop and make sure View > Show desktop icons is checked. If the icons are still missing, try right-clicking the desktop and select Refresh.
Also, are the missing icons shortcuts, files, or folders? Did you recently enable Tablet Mode, change screen resolution, or connect/disconnect another monitor?
Let us know which icons disappeared and whether they are still present in one of these folders: C:\Users\YourUserName\Desktop and C:\Users\Public\Desktop That information will help narrow down whether the icons were removed, moved, or simply not being displayed.