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Office for Mac Issues

How to Fix PowerPoint Red Border and Spacebar Issue on Mac

Natalie TaylorNatalie Taylor Sep 30, 2026 868 views

Question details

The user is unable to type spaces in PowerPoint text boxes on Mac, accompanied by an unexpected red border appearing around the slide.

Fixing the PowerPoint Red Border and Spacebar Problem on Mac
Product
Microsoft PowerPoint for Mac
Device & OS
Mac
Scenario
Editing text inside a presentation slide text box
Observed behavior
A red outline appears around the slide. Pressing the spacebar moves the cursor out of the text box instead of inserting a space.
Before you start

Before proceeding with a full reinstallation, ensure you have saved all your ongoing work and have your Microsoft account credentials ready for reactivation.

Solution 1Recommended

Uninstall and Reinstall Microsoft 365 for Mac

A complete reinstallation of Microsoft 365 is the most effective and proven way to resolve this specific text-entry bug in PowerPoint for Mac.

Standard troubleshooting methods like restarting the app or Mac often fail to resolve this specific bug. Removing the application files and downloading a fresh copy from Microsoft eliminates corrupted cache or installation files causing the spacebar glitch.

1
Quit all Office applications

Ensure Microsoft PowerPoint and all other Microsoft Office apps (Word, Excel) are completely closed before starting the uninstallation process.

2
Remove Microsoft 365 applications

Open Finder, go to the 'Applications' folder, and drag Microsoft PowerPoint, Word, Excel, and other Office apps to the Trash.

3
Clear library files

Open Finder, press Command+Shift+G, type '~/Library/Containers', and remove the Microsoft PowerPoint folders to clear corrupted cache files.

4
Reinstall Microsoft 365

Visit the official Microsoft website, log into your account, download the latest Office installer for Mac, and follow the on-screen instructions to reinstall.

Uninstall and Reinstall Microsoft 365 for Mac
License Check: You will need to sign in with your Microsoft account after reinstalling to reactivate your Office applications.
Free Microsoft Office alternative

Try WPS Office for a Seamless Mac Presentation Experience

Tired of dealing with frustrating bugs and time-consuming reinstallations? WPS Office offers a free, lightweight, and highly compatible alternative to Microsoft Office. Create and edit presentations flawlessly on your Mac without the heavy resource drain or text-entry glitches.

  1. 1. Download WPS Office: Navigate to the official WPS website and download the free version optimized for Mac.
  2. 2. Install the application: Open the downloaded package and drag the WPS Office icon to your Applications folder.
  3. 3. Open your presentation: Launch WPS Presentation and seamlessly open, edit, and save your existing .pptx files.
Fully compatible with Microsoft PowerPoint (.ppt, .pptx) formats.Stable performance with no unexpected red borders or spacebar glitches.Lightweight installation that takes up significantly less space on your Mac.Familiar, intuitive user interface that requires no learning curve.
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Frequently Asked Questions

Why does a red border appear around my PowerPoint slide on Mac?

The red border is often a visual glitch caused by corrupted application files or cache within PowerPoint for Mac, which subsequently interferes with standard keyboard inputs like the spacebar.

Can I fix the spacebar issue without reinstalling Microsoft 365?

You can try restarting your Mac or clearing the PowerPoint cache in the Mac Library folder first. However, if the issue persists, a clean reinstallation is the most reliable solution based on community feedback.

Will reinstalling Microsoft 365 delete my PowerPoint files?

No, uninstalling and reinstalling the Microsoft 365 applications only removes and replaces the software files. Your personal documents and saved presentations will remain completely untouched on your hard drive.