On Sat, Jan 10, 2026 at 12:43 AM Gihan Rajapaksha <[email protected]> wrote:
>
> Hi everyone,
> I’m trying to set up Guacamole 1.6.0 with SQL Server on Ubuntu 24.04, but 
> I’ve run into a weird error that prevents the extension from starting. The 
> Error: Tomcat shows this error in the logs: Cause: SAXParseException; 
> lineNumber: 217; columnNumber: 86; Element type "hen" must be declared.
> It looks like a typo ("hen" instead of "when"?) somewhere inside the 1.6.0 
> extension’s internal files.
>
> My Test Results: To troubleshoot, I removed the 1.6.0 extension and dropped 
> in the 1.5.5 version instead. With 1.5.5, everything works perfectly. When I 
> put 1.6.0 back in, it fails again with the same XML error.
>
> My Setup:
> Guac Extension: 1.6.0 (Fails) vs 1.5.5 (Works)
> Database: Microsoft SQL Server 2016
> Java/OS: OpenJDK 21 on Ubuntu 24.04
> JDBC Driver: mssql-jdbc-12.8.0.jre11.jar
>
> I've attached my catalina.out log. It seems like there might be a regression 
> or a typo in the new 1.6.0 SQL Server JAR. Has anyone else run into this?
>

You've likely hit the following bug:

https://issues.apache.org/jira/browse/GUACAMOLE-2099

Fix has already been committed for the 1.6.1 release.

-Nick

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