How to Update Microsoft Office on Mac: Word, Excel, Outlook & PowerPoint

To update Microsoft Office on Mac, first identify where your Office apps came from. If Word, Excel, PowerPoint, Outlook, or OneNote was installed from Microsoft, use Help > Check for Updates to open Microsoft AutoUpdate. If the apps came from the Mac App Store, update them from App Store > Updates. Choosing the wrong updater is one of the most common reasons an Office update seems to be missing.

Before updating, save open documents and make sure important local files are backed up. An Office app update should not normally delete your documents, but a failed macOS update, damaged storage, or an unrelated deletion can create a separate data-loss problem. This guide keeps the update process and file recovery clearly separated.

• Microsoft-installed Office: Open an Office app, choose Help > Check for Updates, then use Microsoft AutoUpdate.
• Mac App Store Office: Open the App Store, select Updates, then update the Office apps listed there.
• Office will not update: Verify the install source, update Microsoft AutoUpdate, confirm macOS support, and check whether your Mac is managed by work or school.
• Office files are missing: Treat that as a separate file-recovery issue and avoid writing new data to the affected drive until the files are safe.

Part 1. Before You Update Microsoft Office on Mac

Office for Mac can be updated through two different systems, and the correct route depends on how the apps were installed. Checking that first prevents you from troubleshooting the wrong update service and also helps explain why two Macs can show different update options.

Choose the Correct Office Update Method

Microsoft currently directs Microsoft.com installations to Microsoft AutoUpdate and Mac App Store installations to the App Store. If you are not sure which version you have, use the decision table below before changing any settings.

Microsoft also documents a Terminal check for the Word installation source. Enter the following command exactly:

Command: mdls -name kMDItemAppStoreReceiptType /Applications/Microsoft\ Word.app

If the result is (null), Microsoft says to use Microsoft AutoUpdate. If the result is Production, use the Mac App Store. See Microsoft's current Office for Mac update instructions for the same distinction.

Check Your macOS and Office Version

After you know the updater, confirm that the Mac is still within Microsoft's supported operating-system range. Microsoft supports Office for Mac on the three most recent major versions of macOS, so the cutoff changes when Apple releases a new major macOS version. Check the current Microsoft 365 and Office system requirements instead of relying on an old version list.

As of September 17, 2026, Microsoft's Office for Mac update history lists Version 16.112.3 (build 26083020), released September 1, 2026, as the most current package on that page. Update channels can differ, so use Microsoft's Office for Mac update history as the live reference rather than treating any build number in an evergreen article as permanent.

Part 2. Update Office on Mac With Microsoft AutoUpdate

If your Office apps were installed from Microsoft, Microsoft AutoUpdate is the normal route for a Mac Office 365 update and for updating individual apps such as Word, Excel, Outlook, or PowerPoint. The steps below follow Microsoft's current support flow.

Update Word, Excel, PowerPoint, Outlook, and OneNote

Start from any installed Microsoft Office app. You do not need to open every app separately because Microsoft AutoUpdate can show updates for the Microsoft apps it manages.

Step 1. Save Your Work and Open an Office App

Save open documents, then launch Word, Excel, PowerPoint, Outlook, or OneNote.

Step 2. Open Microsoft AutoUpdate

From the menu bar, choose Help > Check for Updates.

Step 3. Review Available Updates

Microsoft AutoUpdate opens and checks the Microsoft apps it manages. If updates are available, choose Update for one app or Update All when you want to update all listed apps.

Step 4. Reopen the App and Verify It

After the update finishes, reopen the app. You can check its version from the app menu, such as Word > About Microsoft Word or Excel > About Microsoft Excel.

If Check for Updates is missing entirely, do not start changing DNS or disabling the firewall. Microsoft recommends installing the latest Microsoft AutoUpdate component first, which is covered in Part 5.

Turn On Automatic Microsoft Office Updates

If manual updating works, you can reduce future maintenance by letting Microsoft AutoUpdate keep supported Microsoft apps current automatically.

1. Open an Office app and choose Help > Check for Updates.
2. In Microsoft AutoUpdate, enable Automatically keep Microsoft apps up to date.
3. Leave Office on the normal production channel unless you intentionally need preview builds for testing.

Microsoft also offers preview channels through AutoUpdate for users who deliberately test upcoming builds. Those channels are not required for a normal Office update on Mac.

Part 3. Update Office Apps From the Mac App Store

If Word, Excel, Outlook, PowerPoint, or another Office app was installed from the Mac App Store, the App Store owns the update process. In that case, Microsoft AutoUpdate may not be the correct place to look for the newest version.

Update Word, Excel, Outlook, or PowerPoint in the App Store

Apple's current Mac App Store flow is simple: open the Updates section, then update the individual Office app or all available apps.

Step 1. Open the Mac App Store

Open App Store from the Dock, Applications folder, or Spotlight.

Step 2. Select Updates

Click Updates in the sidebar. The current App Store interface keeps the Updates entry in the left navigation.

Step 3. Install the Office Update

Choose Update next to Word, Excel, Outlook, or PowerPoint, or choose Update All if you want to install every available app update. Apple documents the same workflow in its current app-update guidance.

Turn On Automatic App Store Updates

If you prefer the App Store to handle Office updates automatically, enable automatic app updates after confirming that your Office apps are App Store versions.

1. Open App Store.
2. Choose App Store > Settings from the menu bar.
3. Turn on Automatic Updates.

This setting applies to eligible App Store apps generally, not only Microsoft Office.

Part 4. Update Word, Excel, Outlook, and PowerPoint Individually

The search terms “update Word for Mac,” “update Excel Mac,” “update Outlook in Mac,” and “update PowerPoint Mac” all lead to the same core rule: the app's install source determines the updater. You can still choose to update only one app when the updater offers that option.

If Word still will not launch after it is fully updated, that is a different troubleshooting intent. Use the dedicated guide for Microsoft Word not opening on Mac rather than repeatedly reinstalling updates.

Part 5. What to Do If Office Update Fails on Mac

When an Office update fails, troubleshoot the update layer before reinstalling Office. The safest order is to verify the updater, repair the update service, confirm macOS compatibility, and only then investigate licensing or organization-managed restrictions.

Confirm You Are Using the Right Updater

A Mac App Store copy of Word will not follow exactly the same update route as a Microsoft.com copy. Recheck Part 1 or use Microsoft's documented install-source command before assuming the update system itself is broken.

• Microsoft-installed app: Use Help > Check for Updates and Microsoft AutoUpdate.
• App Store-installed app: Use App Store > Updates.
• Managed Mac: Your organization may delay or control update availability.

Update or Repair Microsoft AutoUpdate

If Check for Updates is missing, Microsoft AutoUpdate will not open, or it repeatedly fails, use Microsoft's current AutoUpdate troubleshooting path rather than generic network tweaks.

1. Quit Office apps.
2. Download and install the latest Microsoft AutoUpdate package from Microsoft's support guidance.
3. Reopen Word or another Office app and choose Help > Check for Updates.
4. If a managed Mac blocks the installer or helper service, contact your IT administrator.

Microsoft notes that AutoUpdate problems can involve a missing helper or insufficient permissions. See the official Microsoft AutoUpdate troubleshooting guidance. Avoid disabling the macOS firewall or replacing your DNS settings unless a qualified administrator has diagnosed a specific network problem.

Update macOS Before Updating Office

If Office says your Mac is unsupported, or a newer Office build will not install, check the operating system next. Microsoft ties current Office support to recent macOS releases, and Apple recommends backing up before installing a major macOS update.

Step 1. Back Up Important Files

Before a major macOS upgrade, make sure important local documents are backed up to a healthy destination.

Step 2. Open Software Update

Choose Apple menu > System Settings > General > Software Update.

Step 3. Install a Compatible macOS Update

Install the compatible update offered for your Mac, then restart and try the Office update again. Apple documents the current path in its macOS update guidance.

Fix Reduced Functionality, Error 0x0, or License Problems

Not every “Office stopped working after an update” symptom is an updater failure. In July 2026, Microsoft documented a reduced-functionality condition in which affected Office apps could open and print but could not edit, save, or create files on unsupported configurations. Microsoft also documented and resolved a separate Unknown Error 0x0 / License Not Found issue.

If Office opens but editing and saving are disabled, follow Microsoft's current macOS and Office update guidance and verify both the operating system and Office build. If you specifically see Error 0x0, use the dedicated Recoverit explainer for Office Error Code 0x0 on Mac for that separate troubleshooting path.

Check Whether Your Mac Is Managed by Work or School

On organization-owned Macs, Microsoft AutoUpdate settings, update channels, helper permissions, and app installation can be managed centrally. If AutoUpdate says you do not have permission or your update channel differs from a personal Mac, contact the IT or help-desk team instead of removing management profiles or security controls yourself.

Part 6. Update vs. Upgrade Microsoft Office on Mac

“Update Office” and “upgrade Office” are often used interchangeably in searches, but they are different actions. Knowing which one you need prevents repeated update attempts on a product that has already left support.

Office 2019 for Mac reached end of support on October 10, 2023. Microsoft also states that Office 2021 reaches end of support on October 13, 2026. If you are trying to “upgrade Microsoft Word for Mac” or “upgrade Excel for Mac” from one of these older perpetual releases, confirm the product lifecycle first; installing the last available update does not extend support indefinitely.

Part 7. What If an Office File Is Missing After an Update?

An Office app update should not normally delete your Word, Excel, or PowerPoint files. If a document is missing after an update, treat it as a separate file-loss problem and first determine whether the file was unsaved, moved, synced elsewhere, deleted, or stored on a drive that is no longer accessible.

• Unsaved Word document: Check Word's recent files and AutoRecovery options before using data-recovery software.
• OneDrive or cloud file: Check the correct Microsoft account, OneDrive folder, and cloud recycle bin.
• Deleted local file: Check Trash and any current backup before scanning the drive.
• Missing file on a readable drive: Stop unnecessary writes to that drive because new data can overwrite recoverable content.

For Word-specific recovery paths, see how to recover a deleted Word file on Mac. If a local Office file has actually been deleted or become inaccessible and the storage device is still detected, Recoverit for Mac can be used to scan supported readable storage. No software can guarantee recovery after data has been overwritten, and recovered files should be saved to a different healthy location.

For the current product workflow and limits, use the official Recoverit for Mac user guide rather than treating file recovery as part of the Office update itself.

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Conclusion

The correct way to update Microsoft Office on Mac depends on the installation source. Microsoft-installed copies use Microsoft AutoUpdate, while Mac App Store copies update through the App Store. If an Office update fails, verify the updater first, then repair AutoUpdate, check macOS support, and investigate license or organization-managed restrictions. Keep file recovery separate from app maintenance: only use a recovery workflow when a local Office file is genuinely missing, deleted, or inaccessible.