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title: Kerberos Module Release Notes
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# Kerberos Module Release Notes

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)1.0.1

**August 4, 2026**

### Fixed Issues

<table class="tableblock frame-all grid-all fit-content spread">
<colgroup>
<col>
<col>
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Issue Resolution</th>
<th class="tableblock halign-left valign-top">ID</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">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 class="tableblock halign-left valign-top"><p class="tableblock">W-22844997</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">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 class="tableblock halign-left valign-top"><p class="tableblock">W-23384507</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">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 class="tableblock halign-left valign-top"><p class="tableblock">W-23384757</p></td>
</tr>
</tbody>
</table>

### Compatibility

<table class="tableblock frame-all grid-all fit-content spread">
<colgroup>
<col>
<col>
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Application/Service</th>
<th class="tableblock halign-left valign-top">Version</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Mule</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">4.12.2 and later</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">HTTP Connector</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">1.11.0 and later</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">OpenJDK</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">17</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Netty HTTP Service</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">0.5.2 and later</p></td>
</tr>
</tbody>
</table>

## [](#1-0-0)1.0.0

**October 22, 2025**

### Compatibility

<table class="tableblock frame-all grid-all fit-content spread">
<colgroup>
<col>
<col>
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Application/Service</th>
<th class="tableblock halign-left valign-top">Version</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Mule</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">4.10.0 and later</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">HTTP Connector</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">1.11.0 and later</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">OpenJDK</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">17</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock">Netty HTTP Service</p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock">0.3.0 and later</p></td>
</tr>
</tbody>
</table>

## [](#see-also)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)