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How to Fix Microsoft Teams Video Call Errors
Question details
The user encounters an error message whenever they try to start a video call in Microsoft Teams.
- Product
- Microsoft Teams
- Device & OS
- not provided
- Scenario
- Attempting to initiate a video call within the Microsoft Teams desktop or mobile application.
- Observed behavior
- An error is displayed preventing the video call from starting, and the issue persists even after restarting the application and the device.
Before proceeding, verify that your device's camera and microphone are properly plugged in and not currently being utilized by another background application.
Test the Application Using Teams on the Web
Use the web version of Teams to determine if the video call error is specific to your installed desktop application.
By accessing Teams through a web browser, you can isolate whether the problem lies within your local application cache/installation or if it is a broader account or network issue.
Launch a supported web browser such as Microsoft Edge or Google Chrome.
Go to teams.microsoft.com and sign in with your Microsoft account credentials.
Attempt to start a video call directly from the web interface to see if the error persists.
Optimize Network and VPN Settings
Adjust your network connections and test your VPN configuration to ensure they are not blocking Teams video traffic.
Report the Issue to Microsoft Community Support
If troubleshooting fails, provide your specific error details to a Microsoft Community Moderator via private message.
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Frequently Asked Questions
Why does Microsoft Teams say my camera isn't working even though it is plugged in?
This often occurs due to operating system privacy settings or application permissions. You need to check your system's privacy settings and ensure that Microsoft Teams is explicitly allowed to access your camera and microphone.
Can a VPN cause Microsoft Teams video calls to drop or fail?
Yes. A VPN routes your internet traffic through external servers, which can increase latency, reduce bandwidth, or inadvertently block the specific UDP ports that Microsoft Teams requires for transmitting audio and video data.
Will clearing the Microsoft Teams cache help resolve video call errors?
Clearing the cache deletes temporary files that might have become corrupted. It is a common and effective troubleshooting step when Teams exhibits unexpected behaviors, including crashing or displaying errors during video calls.
