How to Resolve Microsoft Teams 'Your network is unstable' or Poor Call Quality Issues on Windows 11

Summary

This guide helps you troubleshoot and resolve: How to Resolve Microsoft Teams 'Your network is unstable' or Poor Call Quality Issues on Windows 11. Follow the steps below to fix the issue.

Common Causes

Microsoft Teams relies on a stable internet connection to deliver clear audio and smooth video during calls. If you see a "Your network is unstable" warning, or experience choppy sound and frozen video, it usually means your connection cannot keep up with the demands of the call. This guide provides steps to resolve network instability and poor call quality on Windows 11.

Quick Fix Steps

1. Close any unnecessary browser tabs and applications running in the background.
2. Pause large downloads or file syncing services (such as OneDrive) on your device.
3. If using Wi-Fi, move closer to your wireless router.
4. Restart your Microsoft Teams application.

Detailed Instructions

1. Check your network connection

Before changing settings, verify your internet speed. Teams generally requires a minimum of 1.5 Mbps upload and download for high-quality video calls.

1. Open your web browser and visit a speed test website.
2. Run the test and note the results.
3. If speeds are significantly lower than your plan, restart your modem and router.

2. Switch to a wired connection

Wi-Fi signals can be interrupted by walls, distance, and other devices. For the most stable call quality, connect your computer directly to your router using an Ethernet cable.

3. Adjust Teams video settings

Reducing the video quality can reduce the strain on your network.

1. Open Microsoft Teams.
2. Click the ... (More) button next to your profile picture.
3. Select Settings.
4. Click Devices in the left-hand menu.
5. Under Camera, select a lower resolution if available, or turn off your video during calls.

4. Disable hardware acceleration

In some cases, hardware acceleration can cause performance issues on older Windows 11 devices.

1. Open Microsoft Teams.
2. Click the ... (More) button next to your profile picture.
3. Select Settings.
4. Click General in the left-hand menu.
5. Under Application, toggle on Disable GPU hardware acceleration.
6. Restart Teams for changes to take effect.

5. Clear the Teams cache

Corrupted temporary files can cause the application to behave incorrectly.

1. Completely close Microsoft Teams (right-click the Teams icon in the system tray and select Quit).
2. Press Windows key + R to open the Run dialog.
3. Type %appdata%\Microsoft\Teams and press Enter.
4. Select all files and folders in this window and delete them.
5. Restart Microsoft Teams.

Troubleshooting

If the issue only happens on one device

• Ensure your Windows 11 operating system is up to date via Settings > Windows Update.
• Update your network adapter drivers through Device Manager.
• Try using the Teams web app at teams.microsoft.com instead of the desktop application.

If the issue happens on all devices

• Contact your internet service provider to check for line faults or local outages.
• Check if other devices on the network are consuming high bandwidth (e.g., 4K streaming or large cloud backups).

If you have followed these steps and continue to experience network instability, please Open a Ticket with our support team.

Still Having Issues?