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Fix a Wowza SSL error by first identifying the exact endpoint that fails, then checking that endpoint’s certificate configuration, keystore, port, and TLS compatibility. Streaming Engine host ports, Manager HTTPS, the REST API, and WebRTC secure WebSockets can use separate SSL settings, so changing one certificate configuration may not fix the others.
Identify which Wowza connection is failing
Before changing a certificate or restarting a service, record the exact URL and port, the client or browser error, and the corresponding Wowza log message. This helps distinguish a certificate trust problem from a keystore-loading, network, or TLS negotiation problem.
| Connection | Where its SSL settings are configured | What to check first |
|---|---|---|
| Streaming Engine host port | <SSLConfig> in VHost.xml |
The certificate and keystore settings for the particular host port in use. |
| Wowza Streaming Engine Manager HTTPS | SSL parameters in manager/conf/tomcat.properties |
The Manager HTTPS port, its availability, and whether it differs from the HTTP port, 8080. |
| REST API over SSL | SSLConfig in Server.xml |
The REST API’s own SSL settings and the port clients use. |
| WebRTC secure WebSocket | The host port’s SSL configuration, used with a wss:// endpoint |
That the page uses a secure WebSocket URL and the Wowza host port has an SSL binding. |
Port numbers and bindings depend on the deployment. Do not assume that the secure host port, Manager HTTPS port, and REST API port are the same.
Match the error to a likely cause
An error message narrows the possibilities but does not establish the cause. Confirm it against the configuration for the failing endpoint and the server logs.
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| Symptom | Likely causes to investigate |
|---|---|
Browser shows “Not Secure” or ERR_CERT_AUTHORITY_INVALID |
A self-signed certificate the client does not trust, an incomplete certificate chain, or a certificate identity that does not match the requested hostname. |
| Wowza logs “Could not load keystore” | An incorrect or unreadable file path, incorrect password, or a keystore type that does not match the actual file format. |
| WebSocket connection fails | No SSL binding for the host port, an untrusted certificate, or a client using the wrong WebSocket scheme. |
| TLS handshake fails | The client and server may not share a supported TLS protocol version or cipher suite. |
Fix “Could not load keystore”
- Back up the configuration and keystore. Preserve the current files before editing settings or converting a keystore.
- Verify the configured path. Check the SSL configuration for the endpoint that is failing and confirm the path points to the actual file Wowza can read.
- Check the password. Confirm the configured keystore password is correct. For StreamLock, also check that the certificate domain has been entered correctly in the keystore path.
- Match the keystore type to the file. Wowza’s VHost reference lists
JKSas the default type. A file ending in.p12or.pfxis not automatically a JKS keystore; verify its actual format and use a configuration or conversion method supported by your installed version. - Restart the component affected by the change and inspect its logs. Confirm that the load error is gone before moving on to browser or client testing.
Fix a browser trust or hostname warning
- Check the certificate identity. Compare the hostname in the URL with the identity covered by the certificate. A certificate for a different hostname will not establish the expected identity for the requested one.
- Check trust and the full chain. Confirm that the client trusts the issuing certificate and can build a chain that includes any required intermediate certificates. An incomplete chain can cause a trust warning even when a server certificate is present.
- Choose a certificate that fits the clients. Wowza documents procedures for self-signed certificates, CA-issued certificates, importing an existing certificate, and StreamLock. Self-signed certificates are suitable only when the client trust model permits them; external clients generally need a certificate they trust.
- Check expiration and renewal arrangements. Wowza Support warns that an expired StreamLock certificate cannot be renewed: its guidance is to create a new certificate and adjust playback links that used the old one. Verify the current account and service procedure before making that change.
When choosing a certificate, consider whether the intended clients trust its issuer, which domains it covers, how expiration and renewal are handled, whether its keystore format works with the installed Java and Wowza versions, and who controls issuance and private keys. The available configuration paths do not make one certificate choice right for every deployment.
Fix HTTPS, WSS, or connection failures
- Confirm the correct secure endpoint. Check the exact host, port, and URL scheme used by the client. For a WebRTC secure WebSocket, use
wss://; modern browsers do not permit an HTTPS page to use an insecurews://connection. - Check the SSL binding. For a Streaming Engine host port, inspect its
<SSLConfig>inVHost.xml. Do not assume the Manager or REST API settings provide SSL for that host port. - Confirm the port is available and reachable. Make sure the intended service is listening on that port, another process has not taken it, and firewalls and network rules allow the client’s connection. Manager HTTPS must use a port different from its HTTP port, 8080.
- Retest from the affected client. Use the exact hostname, port, and path that failed. For WebSockets, inspect the browser’s network tools to see whether the secure WebSocket handshake succeeds.
Investigate TLS protocol or cipher failures
If the certificate loads but clients still fail during TLS negotiation, compare the protocol versions and cipher suites supported by the client and server. Wowza’s SSL guidance describes sslLogProtocolInfo and sslLogConnectionInfo for collecting protocol and cipher information. Use the resulting logs to diagnose the connection rather than guessing at a protocol filter.
Rank #2
Wowza notes that Streaming Engine versions 4.8.18 and later include Java 11 or Java 21, which provide TLS 1.3 support; older versions may need a Java 11 runtime for TLS 1.3. Confirm the installed Engine and Java versions, and the supported configuration for that deployment, before changing protocol settings. Wowza Support also documents how to enable specific TLS versions. Apply the narrowest change that meets client compatibility and security requirements, then retest the affected clients.
Validate the change
- Restart the service component required by the setting you changed. For Manager HTTPS parameters in
manager/conf/tomcat.properties, Wowza’s instructions call for restarting Wowza Streaming Engine Manager. - From the client that originally failed, test the same hostname, port, and URL path.
- Inspect the certificate details in the browser and check the relevant Wowza logs for new errors.
- For WebRTC, confirm in the browser’s network tools that the WSS handshake succeeds.
Do not treat a configuration edit as a verified fix until the affected client has successfully connected and the relevant logs are clear.
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