Office Compatibility Issues

Fix PowerPoint Showing Question Marks Instead of Font Characters

Steve K Oct 7, 2026 871 views

Question details

The user needs to resolve an issue where PowerPoint replaces certain font characters with question marks, even though the same font displays correctly in Word and Excel.

How to Fix PowerPoint Showing Question Marks Instead of Font Characters

Product: PowerPoint
Device & OS: not provided
Scenario: Editing or viewing a presentation in PowerPoint that relies on a specific installed font.
Observed behavior: Text characters formatted with a specific font are displayed as question marks on the slide, despite the font appearing correctly in the font dropdown list and functioning normally in other Office applications.

Before you start

Ensure that the problematic font actually contains the glyphs for the specific language or special characters you are trying to type, and confirm if any recent changes were made to your system fonts.

Solution 1Recommended

Repair Your Microsoft Office Installation

Running an online repair for Microsoft Office can fix application-specific glitches, corrupted settings, or registry errors causing PowerPoint to render fonts incorrectly.

Because the font works perfectly in Word and Excel but fails in PowerPoint, the issue is likely isolated to the PowerPoint application itself. An Online Repair reinstalls core Office components without affecting your personal files, often resolving complex rendering bugs.

Close Office Applications

Make sure PowerPoint, Word, Excel, and all other Office applications are completely closed.

Open Programs and Features

Press the Windows key, type 'Control Panel', and open it. Navigate to 'Programs' and then click on 'Programs and Features'.

Modify Microsoft Office

Scroll through the list of installed programs, right-click on your Microsoft Office installation, and select 'Change'.

Run Online Repair

Select 'Online Repair' from the dialog box and click 'Repair'. Follow the on-screen prompts and restart your computer once the process is finished.

Repair Your Microsoft Office Installation

Quick Repair Alternative: You can try a 'Quick Repair' first, which is faster and doesn't require an internet connection. If the question marks persist, proceed with the comprehensive 'Online Repair'.

Solution 2

Verify Font Character Support and Test Alternates

Identify whether the issue stems from the specific font file lacking necessary character glyphs by testing a standard system font.

Solution 3

Check for PowerPoint Updates

Installing the latest Office updates ensures you have the newest bug fixes for font compatibility and rendering issues.

Free Microsoft Office alternative

Try WPS Presentation for Reliable Font Rendering

If PowerPoint continues to display question marks or struggles with custom fonts, consider switching to WPS Office. It is a free, lightweight alternative that offers robust font compatibility and seamless rendering for all your presentation needs without the technical glitches.

1. Download and Install WPS Office: Visit the official WPS website, download the free installer, and complete the quick installation process.
2. Open Your Presentation: Launch WPS Presentation, click 'Open', and select your existing .pptx file.
3. Enjoy Seamless Formatting: View and edit your slides with all fonts correctly displayed without unexpected question marks.

Highly compatible with Microsoft PowerPoint (.pptx) formatsAccurate rendering of custom, third-party, and system fontsLightweight design ensures smooth performance on older devicesFree to use with a familiar, user-friendly interface

microsoft office alternative - wps office

Frequently Asked Questions

Why do fonts show as question marks only in PowerPoint and not Word?

PowerPoint utilizes a different text rendering engine for slide elements compared to Word's document layout engine. Because of this architectural difference, specific rendering bugs, corrupted app caches, or graphics hardware acceleration issues can isolate font display problems entirely to PowerPoint.

Can a corrupted font file cause question marks in presentations?

Yes. If the specific font file (.ttf or .otf) is damaged or outdated, PowerPoint may fail to read certain character glyphs accurately, substituting them with default question mark boxes. Reinstalling the font from a reliable source can often fix this.

How do I fix missing fonts when opening a presentation on another computer?

If a custom font isn't installed on the destination computer, PowerPoint may substitute it and display formatting errors or question marks. To prevent this, go to File > Options > Save, and check 'Embed fonts in the file' before saving and sharing your presentation.

Does disabling hardware graphics acceleration fix font rendering issues?

Sometimes. Hardware acceleration offloads graphics processing to your GPU, which can occasionally cause text rendering glitches in PowerPoint. You can test this by going to File > Options > Advanced, checking 'Disable hardware graphics acceleration' under the Display section, and restarting the app.

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