[@S LEONIDAS]
To fix your problem try to apply some of the following tips:
Method #1
Run the setup as an administrator
Method #2
Run cmd in admin mode and type sfc/scannow, click the Enter key
Method #3
Disable temporarily your antivirus, firewall or other security programs.
If none of these methods works, some geeks advise to use the following method, which I personally would use as a last resort:
Right-click the setup file and go to Properties. Click “Security” and here give full rights to the executable.
I have never used this “Security” method, so I cannot guide you here.
Let’s hope that some of the three methods (#1,#2,#3) work for you.