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How to Fix Microsoft Office Not Opening on macOS Big Sur
Question details
Users are unable to launch Microsoft 365 or newer Office for Mac applications because the current operating system does not meet the software's minimum requirements.
- Product
- Microsoft 365 / Office for Mac
- Device & OS
- macOS Big Sur 11.7
- Scenario
- Attempting to open Microsoft Office applications after an update while remaining on an older macOS version.
- Observed behavior
- Office applications fail to open, often displaying an error message stating that macOS 13 or later is required to run the software.
Verify your exact macOS version by clicking the Apple menu and selecting 'About This Mac', and ensure all your important local documents are backed up before uninstalling or modifying any software.
Use Microsoft Office Online via a Web Browser
This is the most reliable workaround if your Mac cannot be upgraded to a newer macOS version, allowing you to edit documents without installing local apps.
Since Microsoft 365 only supports the three most recent major versions of macOS, Big Sur 11.7 is no longer natively supported by new app updates. Using the web version bypasses this system requirement completely.
Launch Safari, Google Chrome, or Microsoft Edge on your Mac.
Go to the official Microsoft 365 website (office.com) and click the 'Sign In' button.
Log in with your Microsoft account credentials. Once logged in, use the app launcher icon on the left sidebar to open Word, Excel, or PowerPoint directly in your browser.
Install an Older Compatible Perpetual Version of Office
If you require desktop applications and have a valid older license (like Office 2019), you can install a historical version that supports macOS Big Sur.
Use WPS Office on Your Mac as a Seamless Alternative
If your Mac cannot run the latest Microsoft Office updates, WPS Office offers a free, lightweight, and incredibly capable alternative. It runs smoothly on a wider range of macOS versions without forcing you into expensive hardware upgrades.
Frequently Asked Questions
Why does Microsoft Office suddenly require macOS 13 or later?
Microsoft’s official policy for Mac is to support only the three most recent major versions of macOS. When Apple releases a new macOS, the oldest of the three drops off the support list, meaning newer Office updates will physically block installation or launch on unsupported systems like Big Sur.
Will my existing documents be deleted if I uninstall Office?
No, your Word, Excel, and PowerPoint files are saved separately from the application files. Uninstalling the Office applications from the Applications folder will not delete your personal documents, though backing them up is always recommended.
Can I bypass the macOS version requirement for newer Microsoft 365 apps?
No, the operating system check is hardcoded into the latest Microsoft 365 app installers. If your Mac cannot be upgraded via Apple's System Preferences, your only options are using Office Online, installing a legacy Office build, or switching to an alternative suite like WPS Office.
