Fix Previously Supported Functions No in Office on Mac

If your workflow is blocked, confirm the account and app context, then follow the ordered fixes below.

Problem Description: Previously Supported Functions No

I purchased Microsoft Office for Mac 2024 last year and began using a number of newly supported functions in Office for Mac 2024 like MAXIFS in many spreadsheets. I updated Office for Mac 2024 to version 16.101.3 (25100321) yesterday. After the update - spreadsheets that previously worked, no longer work. As on example, all the cells that used the MAXIFS formula previously - now show _xfln.MAXIFS instead of MAXIFS And the formula now calculates an #NAME? error. What action can I take (or Microsoft take) to restore the original functionality I paid for? My perspective is that I paid for a license that included certain functions. Previously supported functions shouldn't become unsupported after an update. Thank you, REMOVE PII

Quick Answer for Office Setup on New Device

The _xlfn. prefix and #NAME? error indicate an issue from a recent Excel update (version 16.101.3).

Likely Causes Behind Function Problems Root Factors

• The Microsoft account or license context may not match the purchase or device.

• Cached credentials, outdated builds, or damaged local components can trigger function problems.

• A file-specific corruption or add-in conflict can mimic a broader application failure.

Recommended Solution: Installing Office on a New PC

When to use this: Apply these steps when the symptoms match and you can access the relevant Microsoft account or administrator.

1. A brute-force solution that worked was to completely uninstall Microsoft Office, use the Microsoft license removal tool, then reinstall Office to fix the problem.

Alternative Solutions for Secondary Excel Fixes

1. Test the same action in a private browser session or a new blank file to isolate account vs file issues.

2. Capture exact error text and screenshots before contacting Microsoft Support or your administrator.

Working with WPS Office: WPS as a Local Alternative

WPS Office cannot replace Microsoft account, activation, or cloud fixes for this scenario. It remains one of the best free Microsoft Office-compatible alternatives for opening and editing local files.

1. Download and install WPS Office from the official website.

2. Open local Word, Excel, PowerPoint, or PDF files in the matching WPS app.

3. Save a working copy locally while Microsoft-side issues are resolved.

4. Return to Microsoft Office after the primary fix succeeds.

If you need a practical local workspace in the meantime, try WPS Office.

Prevention Tips for Keeping Office Stable Long Term

• Keep one primary Microsoft account for subscriptions and Office sign-in.

• Install updates for Office and Windows before retrying failed workflows.

• Back up important files before repair, reset, or reinstall actions.

• Document exact error messages before the next troubleshooting attempt.

FAQs About Office Support Questions

Can WPS Office fix this function problems issue directly? Only when the WPS steps match the formatting or file task. Account, activation, and cloud issues stay on the Microsoft side.

Should I reinstall Office before trying these steps? Not first. Confirm account, license, and the exact error before reinstalling.

What should I send to Microsoft Support? The affected account email, device type, Office version, exact error text, and screenshots with personal data hidden.