Office for Mac Issues

How to Fix Microsoft Word Using Excessive Storage on Mac

Emma Brown Oct 12, 2026 871 views

Question details

The user's Microsoft Word application is consuming an abnormally large amount of storage space (approximately 50 GB) on a MacBook Air.

How to Fix Microsoft Word Using Excessive Storage on Mac

Product: Microsoft Word for Mac
Device & OS: macOS
Scenario: The user is trying to free up disk space on a MacBook Air, but Microsoft Word is taking up around 50 GB, even after reinstalling the Office suite and updating macOS.
Observed behavior: Microsoft Word alone consumes about 50 GB of storage. Reinstalling the app and updating the operating system do not resolve this excessive storage consumption, and the issue is isolated to Word.

Before you start

Before clearing application containers or modifying system folders, ensure that you have saved and closed all active Word documents to prevent any accidental data loss.

Solution 1Recommended

Clear the Microsoft Word Cache Container

Resetting the Microsoft Word container safely resolves storage bloat caused by accumulated temporary files or corrupted cache data.

macOS isolates app data in container folders. If Word's container becomes bloated with temporary items or cache errors, it can consume tens of gigabytes of space. Moving this folder forces Word to generate a fresh, clean cache directory.

Quit Microsoft Word

Ensure Microsoft Word is completely closed by right-clicking its icon in the Dock and selecting 'Quit'.

Access the Containers folder

Open Finder, click on 'Go' in the top Apple menu bar, and select 'Go to Folder' (or press Command+Shift+G).

Locate Microsoft Word container

Type ~/Library/Containers into the search box and press Return. Look for the folder named 'Microsoft Word' (or 'com.microsoft.Word' on older macOS versions).

Backup and reset

Drag the Microsoft Word folder to your Desktop as a backup. Relaunch Microsoft Word; a fresh, lightweight container will be created automatically, which should free up your storage.

Clear the Microsoft Word Cache Container

No Document Loss: Deleting or moving this container folder resets application preferences and caches, but it will not delete your saved personal Word documents.

Solution 2

Disable Third-Party Add-ins

Certain third-party integrations, such as the Zotero add-in, are known to generate excessive background files resulting in abnormal storage usage.

Solution 3

Test in a New macOS User Profile

Testing Word in a different user profile helps determine if the storage bloat is tied to your specific user account settings or corrupted background processes.

Free Microsoft Office alternative

Switch to a Lightweight Alternative: WPS Office for Mac

If Microsoft Word continues to drain your MacBook's storage, consider switching to WPS Office. It provides a full-featured, highly optimized suite that takes up a fraction of the disk space while remaining completely compatible with Microsoft Word documents.

1. Download the app: Visit the official WPS website and download the macOS installation package.
2. Install WPS Office: Follow the installation prompt to add the lightweight app to your Applications folder.
3. Open your files: Launch WPS Writer and open your existing .docx files directly without any formatting loss.

Ultra-lightweight installation saves valuable MacBook storage space.Fully compatible with Microsoft Office formats including .docx, .xlsx, and .pptx.Familiar user interface requires no learning curve.Free to download and use for your essential daily document tasks.

Frequently Asked Questions

Why is Microsoft Word taking up so much space on my Mac?

Abnormal storage usage is usually caused by excessive temporary files, bloated cache data accumulating in the application's container folder, or poorly optimized third-party add-ins like Zotero generating continuous log files.

Will deleting the Microsoft Word container delete my saved documents?

No, deleting or moving the ~/Library/Containers/Microsoft Word folder will not delete your saved files. It only clears application preferences, UI caches, and temporary background data.

How can I check exactly how much storage Word is using on macOS?

Click the Apple menu, go to 'System Settings' > 'General' > 'Storage', and click the 'i' icon next to 'Applications' to view the exact disk space used by Microsoft Word.

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