Formatting Issues

Fix Chinese and English Font Changes in Older PowerPoint Files

Chanuka Geekiyanage Sep 28, 2026 868 views

Question details

Users need to resolve an issue where older PowerPoint files display incorrect Chinese fonts while keeping the English text formatting intact.

How to Fix Chinese and English Font Changes in Older PowerPoint Presentations

Product: Microsoft PowerPoint
Device & OS: Windows
Scenario: Opening legacy PowerPoint presentations after a recent Microsoft Office or Windows system update.
Observed behavior: Chinese characters are rendered in an unexpected or incorrect font, whereas English characters maintain their original formatting, affecting multiple old presentation files.

Before you start

Before attempting any system rollbacks or software updates, make sure to save a backup copy of your affected PowerPoint presentations to prevent accidental data loss.

Solution 1Recommended

Revert Microsoft Office to an Earlier Version

Since the issue is often triggered by recent automatic updates, rolling back Office to a previous stable build can restore the correct font rendering.

Microsoft updates can sometimes alter how legacy fonts are mapped or rendered, particularly for non-Latin characters. Reverting to a version prior to the update is usually the most effective workaround.

Disable Automatic Updates

Open PowerPoint, navigate to File > Account > Update Options, and select 'Disable Updates' to prevent Office from immediately updating again after the rollback.

Open Command Prompt as Administrator

Type 'cmd' into the Windows search bar, right-click on 'Command Prompt', and select 'Run as administrator'.

Run the Rollback Command

Type '"C:\Program Files\Common Files\microsoft shared\ClickToRun\officec2rclient.exe" /update user updatetoversion=16.0.xxxxx.xxxxx' (replace the x's with your previous known stable build number) and press Enter.

Restart and Verify

Allow the downgrade process to complete, then reopen your older PowerPoint presentations to confirm that the Chinese fonts display correctly.

Revert Microsoft Office to an Earlier Version

Find Stable Build Numbers: You can find a list of recent Microsoft 365 update history and build numbers on the official Microsoft release notes page to select a version from before the issue started.

Solution 2

Contact Microsoft 365 Support

If reverting updates does not resolve the font mismatch, an administrator may need to escalate the issue to Microsoft 365 Support for a backend bug fix.

Free Microsoft Office alternative

Open Legacy Presentations Flawlessly with WPS Presentation

If Microsoft Office updates continue to break the formatting in your older files, consider switching to WPS Office. It provides excellent backward compatibility, accurately rendering both Chinese and English characters in older PPT files without the disruption of forced buggy updates.

1. Download WPS Office: Visit the official WPS website, download the free installer, and complete the installation process.
2. Open the Application: Launch WPS Presentation from your desktop or start menu.
3. Open Your Legacy File: Click on 'Open', browse for your older PowerPoint file containing the mixed Chinese and English text, and open it to view the accurately preserved fonts.

Highly compatible with legacy Microsoft PowerPoint formats (.ppt, .pptx).Accurate dual-language font rendering for seamless global presentations.Free, lightweight, and provides a familiar user interface for easy migration.Will not force disruptive background updates that break existing file layouts.

microsoft office alternative - wps office

Frequently Asked Questions

Why did the fonts in my older PowerPoint files suddenly change?

This typically happens due to recent Microsoft Office or Windows system updates modifying default font libraries or rendering engines, which can cause older, specific font mappings (especially for Asian languages) to fail.

Can I fix the font issue by manually changing the fonts in PowerPoint?

Yes, you can manually select the text and apply a new font from the Home tab. However, if multiple legacy presentations are affected, this manual process is very time-consuming, making an update rollback a much faster global fix.

Will uninstalling and reinstalling Office fix the Chinese font issue?

Reinstalling Office usually downloads and installs the latest version by default, which means the bug will likely still be present. To fix it, you must specifically revert to an earlier, stable build instead.

Document & File Issues