I have a customer that uses NIS 16.7.2.11 with Windows XP. When opening an Excel 2007 macro enabled file (xlsm) he clicks “Options” on the Security Warning ribbon which is the normal protocol, and rather than having the option to select a radio button the reads “enable this content” there is a message that reads MS Security cannot run macros because no Anti Viurs software is running. This does not make sense as I can see the file being scanned prior to opening. This has now come up with two customers and the first one had to uninstall Norton in order to use the macro enabled file. Thanks