If you are getting the above error during the install of Sony Vegas ( I had trying to update VP11 to 701)
Go to folder..
look at the log file which looks something like this “SCS_INSTALLER_14.log” (it will have a datestamp), open with Notepad. Note the file could be any number after the SCS_INSTALLER_XX.log
look for something like this.
(use CTRL+F in Notepad and enter ERROR and then did find next)
Error Code: FINISH TXT ERROR: -2147163964 occured during installation
The Installer has insufficient privileges to modify this file: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Sony\Vegas Pro 11.0\Vegas Pro 11.0 (64-bit).lnk.
Navigate to that folder location and remove the lock, use this website to find out how