Office for Mac Issues

How to Fix Spell Check Not Working in PowerPoint for Mac

Maira Mehtab Sep 27, 2026 869 views

Question details

The user needs to restore the spell-checking functionality in their presentation because PowerPoint is failing to detect and highlight misspelled words.

Product: PowerPoint
Device & OS: Mac
Scenario: Reviewing a presentation for spelling and grammar errors before finalizing or presenting the document.
Observed behavior: PowerPoint reports that spell checking is complete without identifying actual spelling mistakes, often ignoring errors present in the text boxes.

Before you start

Before proceeding, check if this issue happens in a brand-new presentation or just one specific file, and ensure your PowerPoint for Mac application is updated to the latest version.

Solution 1Recommended

Verify and Correct the Proofing Language

Applying the correct proofing language forces PowerPoint to use the appropriate dictionary, which usually resolves skipped spelling errors.

Often, text imported or copied from other sources carries hidden language formatting. When PowerPoint encounters text tagged with an incorrect language (or 'No Proofing'), the spell checker skips it entirely.

Select text

Click inside the affected text box and press Cmd+A to select all the text.

Open language tools

Navigate to the top menu bar, click on 'Tools', and then select 'Language'.

Apply correct language

Choose your desired proofing language from the list. Make sure the 'Do not check spelling or grammar' checkbox is unchecked, then click 'OK'.

Run spell check again

Trigger the spell check process once more to see if the previously ignored errors are now correctly highlighted.

Repeat for multiple slides: Because PowerPoint applies language settings at the text box level, you might need to repeat this process for different text boxes or use the Outline view to select all text across the presentation.

Solution 2

Review Proofing and AutoCorrect Preferences

Adjusting the core proofing preferences ensures PowerPoint is actually permitted to display spelling errors as you type.

Solution 3

Provide a Sample File to Support

If settings are correct but the issue continues, providing a sample file helps Microsoft Support isolate presentation-specific corruption.

Spell Check Presentations Effectively with WPS Office

If you are tired of dealing with persistent proofing issues in PowerPoint, try WPS Presentation. It is a highly compatible and lightweight alternative featuring an accurate, built-in spell checker that thoroughly scans your entire presentation without skipping text boxes.

1. Open your file: Launch WPS Office on your Mac and open your .pptx presentation file.
2. Navigate to the Review tab: Click on the 'Review' tab located in the top ribbon menu.
3. Initiate spell check: Click the 'Spell Check' button to scan the entire presentation automatically.
4. Correct errors: Review the highlighted words and accept the accurate spelling suggestions provided in the side pane.

Seamlessly opens, edits, and saves Microsoft PowerPoint (.pptx) formats.Built-in, reliable spell checker supporting multiple global languages.Free and lightweight suite optimized for Mac environments.Familiar user interface ensuring a smooth transition with no learning curve.

microsoft office alternative - wps office

Frequently Asked Questions

Why does PowerPoint say spell check is complete when there are obvious errors?

This commonly occurs when the specific text box is assigned an incorrect proofing language, or if the 'Do not check spelling or grammar' setting was accidentally toggled on for that text.

Can I change the proofing language for the entire presentation at once on Mac?

Changing it globally in PowerPoint for Mac can be tricky. The best workaround is to switch to 'Outline View', highlight all the text on the left pane with Cmd+A, and then navigate to Tools > Language to apply the correct language globally.

Does pasting text from a website affect PowerPoint's spell check?

Yes. When you copy text from the internet or other applications, it often brings over hidden HTML or language tags. To avoid this, always paste text using the 'Keep Text Only' option.

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