Hello Unity Community,
I’m experiencing an issue with SSL certificate verification in the Unity Editor, specifically when trying to access packages via the Package Manager. The error message I encounter is “self-signed certificate in certificate chain,” which prevents package retrieval.
Error Details: While using the Package Manager, the Unity Editor displays the error, “self-signed certificate in certificate chain.” This indicates that the Editor cannot trust the certificate presented by the package source, possibly due to a misconfiguration in the certificate validation process.
Environment:
- Unity Version: 2022.3.25f1
- Operating System: Windows 11
- Network Setup: Firewall enabled, no VPN or Proxy in use
Troubleshooting Steps:
- Updates: Confirmed that both the operating system and Unity Editor are fully updated.
- Network Configuration: Ensured no VPNs or firewalls are interfering with SSL traffic.
- Certificate Management: Verified that the system’s trusted root certificates include those relevant to Unity’s package sources.
- Error Logs: Analyzed Unity Editor logs for additional clues on the SSL handshake failure.
Our entire team, working remotely, faces this issue. Any advice, insights, or suggestions from your experiences would be invaluable as we seek a resolution. How have you managed similar SSL certificate trust issues within Unity?
Thank you in advance for your support and guidance.
Best regards,
what did you do to solve this issue?
Hello,
It sounds like you’re facing a common issue related to SSL certificate validation within the Unity Editor. The error “self-signed certificate in certificate chain” typically occurs when the SSL certificate presented by the server cannot be fully validated against the trusted certificate authorities on your system.
Here are some steps you can take to resolve this issue:
1. Check Unity’s Certificate Trust Store:
Unity maintains its own trust store separate from your system’s trust store. Ensure that Unity’s trust store is up to date and includes the necessary root and intermediate certificates. You can update Unity’s trust store by reinstalling or updating the Unity Editor.
2. Manually Add the Certificate:
If the issue persists, you might need to manually add the problematic certificate to Unity’s trusted store.
- Export the certificate from your web browser or the system certificate manager.
- Add the exported certificate to Unity’s trusted certificate store. You can do this by placing the certificate in the appropriate directory (<Unity_Installation_Path>\Editor\Data\Tools\cacert.pem for Windows).
3. Configure Unity to Ignore SSL Errors (Not Recommended for Production):
As a temporary workaround, you can configure Unity to bypass SSL validation. However, this approach is not secure and should only be used as a last resort or in a development environment.
- Create or edit a file named upmconfig.toml in your Unity project directory.
- Add the following configuration:
[npmRegistry]
skipVerify = true
- Restart the Unity Editor and check if the issue persists.
4. Update Network Configuration:
Sometimes, network security appliances like firewalls or intrusion detection systems can interfere with SSL traffic. Ensure that your network allows outbound SSL traffic to Unity’s package servers without interception or modification.
5. Verify System’s Trusted Root Certificates:
Ensure that your system’s root certificates are up to date. On Windows, you can update the root certificates through Windows Update or manually add the required root certificates using the Certificate Manager.
6. Check for Unity Package Manager Issues:
Occasionally, the issue might be on Unity’s side. Check the Unity status page or the Unity forums to see if there are any ongoing issues with the Package Manager service.
7. Contact Unity Support:
If none of the above steps resolve the issue, consider reaching out to Unity Support for assistance. Provide them with detailed error logs and steps you’ve already taken to diagnose the issue.
By following these steps, you should be able to diagnose and resolve the SSL certificate verification issue you’re encountering. If you have any further questions or need additional assistance, feel free to ask.