For more information about known issues when you run Office for Mac on Apple OS X 10.8 Mountain Lion, please visit the following Microsoft website:
Installer/SetupMicrosoft continues to give you verified secure installations to your computer. With the recent change in Apple OS X 10.8, when you start the installer for some Office for Mac products, you may receive a message that you are about to run an application that comes from an unidentified source.
In order to complete the setup of the product, we suggest you follow Apple's instructions for adjusting the security settings. To locate these instructions, click the question mark (?) button in the message.
Office 2008 for MacWhen you install Office 2008 for Mac, you may be prompted that the installer must exit and then restart. To complete the installation successfully, let the installer exit and then restart.
Article ID: 2732651 - Last Review: 25 Jul 2012 - Revision: 1