How to Disable Drop Shadows in Windows 10

 

Alternatively you can use the Start Menu and search for “advanced system settings” and click on that item. From here, go to the Advanced tab and click the Settings button under Performance. Find and uncheck “Show shadows under windows” and click Apply or OK. The drop shadows will immediately be removed.

How do I get rid of the drop shadow icon?
In the System Properties window click Settings on the Advanced tab. In the Performance Options window, clear the option Use drop shadows icon for labels on the desktop. This option is available on the Visual Effects tab. Click Apply.