Symantec Endpoint Protection has detected that there are pending system changes that require a reboot. Please reboot the system and rerun the installation.”
What we do is open the registry and navigate to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager and locate
PendingFileRenameOperations and rename it to PendingFileRenameOperations2 and then try to install the product.