Question: how to change the system date format to dd-mm-yyyy in windows 10?
Answer: Open Settings.
Click on Time & language.
Click on Date & time.
Under format click the Change date and time formats link.
Use the Short name drop-down menu to select the date format you want to see in the Taskbar.
Use the Short time drop-down menu to select the time format you want to see in the Taskbar.