1. Press Windows + R and put regedit in Run dialog box to open Registry Editor (if you’re not familiar with Registry Editor, then click here). Click OK.
2. In the Registry Editor window, navigate to following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
3. In the right pane of System key, look for the registry DWORD (REG_DWORD) named EnableLUA which should be corresponding to Value 1 as its Data. Double click on the DWORD to modify its value:
4. Now In Edit DWORD Value box, set the Value data as 0 and click OK. Close Registry Editor and reboot. After restart, the issue should be fixed.