While installing Checkpoint VPN Version E84.10 i would get the error “Windows Installer has insufficient privileges to modify the file C:WINDOWS\system32\vsdata.dll”
Solution is to install the update below from Checkpoint and it will resolve the error above.
https://supportcenter.checkpoint.com/supportcenter/portal?action=portlets.DCFileAction&eventSubmit_doGetdcdetails=&fileid=111773