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# Kerberos Module Release Notes

> For the full documentation index, see: https://docs.mulesoft.com/llms.txt

Support Category:
[Select](https://www.salesforce.com/en-us/wp-content/uploads/sites/4/documents/legal/Agreements/versioning-back-support-policy.pdf)

Use the Kerberos Module to add Kerberos (SPNEGO) proxy authentication support to the Mule HTTP
Connector.

Guide: [Kerberos Module User Guide](https://docs.mulesoft.com/kerberos-module/latest/)

## 1.0.1

**August 4, 2026**

### Fixed Issues

<table><colgroup><col> <col></colgroup><thead><tr><th>Issue Resolution</th><th>ID</th></tr></thead><tbody><tr><td><p>Kerberos proxy authentication no longer fails when the proxy requires the standard <code>HTTP/host@REALM</code> service principal. The service principal name is now built using the Kerberos principal name type, so authentication succeeds against proxies that expect the standard service principal name form.</p></td><td><p>W-22844997</p></td></tr><tr><td><p>Proxy authentication no longer fails intermittently on reused (keep-alive) connections, where repeated requests over the same connection could alternate between success and failure.</p></td><td><p>W-23384507</p></td></tr><tr><td><p>Proxy authentication no longer fails when the proxy returns the <code>Negotiate</code> authentication scheme in non-standard letter casing. The scheme is now recognized regardless of casing.</p></td><td><p>W-23384757</p></td></tr></tbody></table>

### Compatibility

<table><colgroup><col> <col></colgroup><thead><tr><th>Application/Service</th><th>Version</th></tr></thead><tbody><tr><td><p>Mule</p></td><td><p>4.12.2 and later</p></td></tr><tr><td><p>HTTP Connector</p></td><td><p>1.11.0 and later</p></td></tr><tr><td><p>OpenJDK</p></td><td><p>17</p></td></tr><tr><td><p>Netty HTTP Service</p></td><td><p>0.5.2 and later</p></td></tr></tbody></table>

## 1.0.0

**October 22, 2025**

### Compatibility

<table><colgroup><col> <col></colgroup><thead><tr><th>Application/Service</th><th>Version</th></tr></thead><tbody><tr><td><p>Mule</p></td><td><p>4.10.0 and later</p></td></tr><tr><td><p>HTTP Connector</p></td><td><p>1.11.0 and later</p></td></tr><tr><td><p>OpenJDK</p></td><td><p>17</p></td></tr><tr><td><p>Netty HTTP Service</p></td><td><p>0.3.0 and later</p></td></tr></tbody></table>

## See Also

- [Salesforce Help](https://help.salesforce.com)

- [MuleSoft Services](https://www.mulesoft.com/support-and-services)

- [Known Issues](https://help.salesforce.com/s/issues)