Open your registry and find the key below. 

Create a new string value named 'DragFullWindows', or modify the existing value, to equal '1' for enabled, or '0' for disabled. 

Close the registry and restart Windows. 

Key:[HKEY_CURRENT_USER\Control Panel\Desktop]
Value Name: DragFullWindows
Data Type: REG_SZ
Data:(0=disable, 1=enable)

 

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