Many of today’s antivirus systems have active scanning features that conflict with the installation of the Microsoft SQL Server. The RentalPoint program can still install correctly, but the backend database of the system will not work if the anti-virus interferes with the proper installation of the software. RentalPoint suggests that any computer(s) that the SQL database will be installed on have all antivirus software turned off or disabled completely for the duration of the install. Note that this is only during the initial install or during upgrade that this problem occurs.