Office 2011 sometimes conflicts with Lion's system fonts, causing text to appear as blocks or gibberish. Fix this by opening Font Book , selecting all fonts, and choosing Validate Fonts to remove duplicates.
The base installation of Office 2011 (version 14.0.0) is unstable on OS X Lion 10.7.5. You must manually apply updates to reach stability: Download and install . Download and install Office 2011 Service Pack 3 (14.3.0) . Apply the final cumulative security update 14.7.7 . Microsoft Office For Mac Os X Lion 10.7.5
Modern versions of Microsoft Office, such as Office 2019, 2021, and Microsoft 365, will not run on Mac OS X Lion. You must use legacy versions of the software. Microsoft Office for Mac 2011 (Recommended) Office 2011 sometimes conflicts with Lion's system fonts,
Word, Excel, PowerPoint, and Entourage (the predecessor to Outlook). You must manually apply updates to reach stability:
Finding, installing, and activating Microsoft Office for Mac OS X Lion requires navigating specific version requirements and compatibility constraints. Supported Microsoft Office Versions for OS X Lion