Only two major releases of Microsoft Office natively support OS X Lion 10.7.5: and Office for Mac 2008 . 1. Microsoft Office for Mac 2011 (Recommended)

Word, Excel, PowerPoint, and Outlook (in Home & Business edition).

: This is the recommended version for OS X Lion. It was the first version compiled exclusively for Intel processors and introduced the "Ribbon" interface to better align with Windows versions.

By running , you close these specific holes. However, understand that Microsoft stopped issuing security patches for Office 2011 in October 2017 . Any vulnerability discovered after 2017 remains unpatched.

: Advanced spreadsheet modeling with VBA macro support.

Download and install the Office 2011 SP3 update (version 14.3.0) . This is a cumulative update required before applying later patches.

: Open Disk Utility (Applications > Utilities), select your hard drive, and click Repair Disk Permissions . This ensures OS X Lion registers the new software frameworks correctly.

Because OS X Lion lacks modern web security protocols (like TLS 1.2 and 1.3), sign-in screens for Office 365 cloud accounts within Office 2011 will fail to load. Stick to local, perpetual license keys instead of cloud subscriptions.

: To ensure the best stability on Lion, you should aim for the last released update, which is version 14.7.7 Prerequisites : Before jumping to the final version, you typically need Service Pack 1 (version 14.1.0) installed first. Key Features

"The identity cannot be opened with this version of Outlook"

👉 Have questions about legacy software? Drop them below.

Even updated, Office 2011 is a 32-bit application running on a 64-bit OS (Lion). To make it snappy:

⚠️ Support ended in 2017. No Office 365 or newer versions work. Upgrade your Mac or use offline only for safety.