Fixing "The RTMP Server Sent an Invalid SSL Certificate" in OBS Studio (2025)

Step 1: Verify the RTMP Server's SSL Certificate

1. Open your web browser and navigate to the RTMP server's secure URL (usually begins with https://).
2. Click the padlock icon in the browser's address bar to inspect the certificate details.
3. Verify the certificate is issued by a trusted Certificate Authority and is not expired.
4. If you notice issues (invalid issuer, expired cert, or domain mismatch), contact your RTMP provider or server admin to update or replace the certificate.

Step 2: Check OBS Studio Stream Settings

1. Open OBS Studio (latest version recommended).
2. Go to File > Settings > Stream.
3. Verify that:
   • The Service is correctly selected (e.g., Custom, YouTube, Facebook).
   • The Server URL begins with rtmps:// if SSL is intended.
   • The Stream Key is accurate and not expired.

Step 3: (Not Recommended) Disable SSL Verification

Warning: Only proceed if you're in a trusted, private network. Disabling SSL checks exposes you to security risks.

1. Open OBS Studio and go to Settings > Stream.
2. Uncheck the Use Secure Connection (SSL) option if available (only visible for Custom RTMP services).
3. Click OK and restart OBS.

Step 4: Update OBS Studio

Always use the latest version of OBS Studio for improved security and compatibility. Visit obsproject.com and download the newest release.

Step 5: Restart OBS Studio

After making changes, restart OBS Studio to ensure new settings are applied.

Step 6: Contact Your RTMP Provider

If the issue persists despite troubleshooting, reach out to your streaming service provider or RTMP server administrator. They may need to reconfigure server certificates or provide updated URLs.