Another thread suggests it is run after missing 3 updates. If so these commands will need running every 90 days. One thread suggests the nag is run after 90 days without an update. Ppowerpoint: sudo /usr/bin/touch -mt $(date '+%Y%m%d0001') '/Applications/Microsoft Powerpoint.app/Contents/ist' Word: sudo /usr/bin/touch -mt $(date '+%Y%m%d0001') '/Applications/Microsoft Word.app/Contents/ist'Įxcel: sudo /usr/bin/touch -mt $(date '+%Y%m%d0001') '/Applications/Microsoft Excel.app/Contents/ist' This seems to have worked for me - extracted this from the ResetUpdateMessage script on William's answer.