Please do as follows to disable user admin control (UAC):
Disable Automatic Short File Name Generation (8.3)
Click Start and search for Registry Editor.
Run the Registry Editor.
Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem.
Select NtfsDisable8dot3NameCreation.
Change this value to 0 if the value is set as 1 or 2.
Change the EnableLUA DWord
Click Start and search for Registry Editor.
Run the Registry Editor.
Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
In the right panel, modify the value of the EnableLUA DWord to 0