WebRTC Blockers Causing Share Failures

If screen sharing doesn’t start or shows an error during your test or interview, it might be due to browser settings or blocked permissions. Follow the steps below to check and fix the issue.

✅ Common Causes and Fixes

What Might Be Wrong	What You Can Do
Browser extensions blocking WebRTC	Disable extensions like ad blockers, VPNs, or privacy tools (e.g., uBlock, Ghostery, DuckDuckGo) temporarily.
Site permissions denied for screen sharing	Go to your browser settings and ensure Screen share, Camera, and Microphone permissions are enabled for the site.
Using an outdated browser version	Update your browser to the latest version. WebRTC compatibility is best on updated browsers.
Browser privacy settings too strict	Reset privacy/security settings to default or allow screen capture for the interview site.
Antivirus or firewall interfering with screen sharing	Temporarily disable or whitelist the application/site in your antivirus or firewall settings.
Multiple browsers or tabs conflicting	Close any duplicate tabs or other video conferencing tools running in the background.
Not using a supported browser	Use Google Chrome, Microsoft Edge or Firefox for best compatibility with WebRTC.
Insecure site (HTTP) blocking access	Ensure you are accessing the interview via a secure (HTTPS) URL.

Still facing issues? Try these:

• Restart your browser and rejoin the session
• Try screen sharing in incognito/private mode to bypass extensions
• Use a different supported browser or device

🧪 Final Check: Test Your Screen Sharing Setup

Before your session, confirm that your device allows screen sharing.

👉 Run a Screen Share Test to ensure WebRTC is functioning properly.

You should be able to see a screen preview and select the window or tab to share.