Good morning.  It appears that there are some NTFS permission issues on the directory or drive that are  still preventing you from installing the software.  Is there another drive letter you can attempt the installation?  Regards,
Hi SBS2011 standard preinstalled by Dell. When installing OMSA 7.1 from [URL] I get below errors and installation rolls back. [IMAGE] I have tried running setup as administrator, have disabled user access control in windows and have given full permission to ‘Everyone’ on the installation folder but no luck. What can we do from here to install OMSA 7.1 please? Thanks Regards  
Error installing OMSA