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How to Fix Green Box When Sharing PowerPoint in Zoom

Aamir Naveed Akram Oct 8, 2026 870 views

Question details

A green box overlay appears in the corner of the screen when sharing a PowerPoint presentation during a Zoom meeting, and the user needs to identify and resolve the source of the glitch.

How to Fix the Green Box Overlay When Sharing PowerPoint in Zoom

Product: PowerPoint, Zoom
Device & OS: not provided
Scenario: Sharing a presentation screen during a Zoom video conferencing session.
Observed behavior: A green box appears in the bottom-right corner of the screen when the PowerPoint presentation is actively shared in Zoom.

Before you start

Before beginning the troubleshooting process, ensure that your Zoom client and your computer's display drivers are updated to their latest versions to rule out basic software conflicts.

Solution 1Recommended

Isolate the Issue and Adjust Zoom Settings

Test the screen sharing feature on different platforms to determine if the problem is specific to Zoom, then adjust Zoom settings accordingly.

Because the green box overlay could be caused by Zoom, PowerPoint, or your display drivers, isolating the variable is the best way to find the root cause.

Test with a blank slide

Create a completely blank PowerPoint presentation and share it on Zoom. If the green box still appears, the issue is likely tied to the interaction between the software interfaces, not the presentation content.

Test on an alternative platform

Open an alternative video conferencing tool like Microsoft Teams or Skype. Share the exact same PowerPoint presentation. If the green box does not appear, the issue is isolated to Zoom.

Update Zoom

Open the Zoom client, click on your profile picture in the top-right corner, and select 'Check for Updates'. Install any available updates and restart the application.

Check Zoom screen-sharing settings

In Zoom, go to Settings > Share Screen > Advanced. Try changing the 'Screen capture mode' or unchecking hardware acceleration for screen sharing to see if the green box disappears.

Isolate the Issue and Adjust Zoom Settings

Contacting Zoom Support: If you confirm that the green box overlay only appears when using Zoom and updating does not fix it, consider contacting Zoom Support for specialized assistance with your hardware configuration.

Solution 2

Disable Hardware Graphics Acceleration in PowerPoint

Turn off PowerPoint's hardware graphics acceleration, which can sometimes cause rendering conflicts with video conferencing applications.

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Try WPS Presentation for Seamless Screen Sharing

If Microsoft PowerPoint continues to experience visual glitches like green overlays during your Zoom meetings, consider switching to WPS Office. It provides a lightweight, highly compatible alternative for delivering pristine presentations without display conflicts.

1. Install WPS Office: Download and install the free WPS Office suite from the official website.
2. Open your Presentation: Launch WPS Presentation and open your existing .pptx file without losing any formatting.
3. Share via Zoom: Start your slideshow in WPS Presentation, open Zoom, and smoothly share the presentation window.

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Frequently Asked Questions

Why does Zoom show a green border when I share my screen?

Zoom intentionally displays a green border around the specific application, window, or monitor you are actively sharing. This is a security feature to help you clearly identify what parts of your screen the meeting participants can see. However, a solid green box blocking a corner of the screen is abnormal and usually indicates a graphics glitch.

Can outdated display drivers cause visual artifacts in Zoom?

Yes, outdated or corrupted graphics drivers can cause unexpected visual artifacts, such as green overlays, black boxes, or flickering when your computer attempts to render resource-intensive applications (like PowerPoint) and broadcast them simultaneously over Zoom. Updating your GPU drivers often resolves these rendering issues.

How do I share only my PowerPoint slideshow on Zoom instead of my whole screen?

To maintain privacy and prevent desktop clutter, start your presentation in Slide Show mode first. Then, use the taskbar (or Alt+Tab on Windows / Cmd+Tab on Mac) to switch to the Zoom meeting window. Click 'Share Screen' and look for the specific window labeled 'PowerPoint Slide Show', select it, and click 'Share'.

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