How to Generate a Houdini License Diagnostic File for SideFX Support

Q: How do I fix "How to Generate a Houdini License Diagnostic File for SideFX Support"?

1. License Administrator: Start the License Administrator (hkey) Click Diagnostic in the left menu and save the file Attach it to an email to support@sidefx.com To include usernames and hostnames, uncheck Scrub Diagnostic User Names in Preferences 2. Headless systems: Run: sesictrl diagnostic > /tmp/diagnostic.txt Attach the file to an email to support@sidefx.com

Workaround available Windows, macOS, Linux Updated November 14, 2026How we research

Quick answer

In Houdini 21+, open the License Administrator, click Diagnostic and save the file, or run sesictrl diagnostic > file on headless systems, then email support@sidefx.com.

Most likely fix: License Administrator

How to fix it

Try these in order — the most common fix is first.

1. License Administrator
1. Start the License Administrator (hkey)
2. Click Diagnostic in the left menu and save the file
3. Attach it to an email to support@sidefx.com
4. To include usernames and hostnames, uncheck Scrub Diagnostic User Names in Preferences
Did this fix it?
2. Headless systems
1. Run: sesictrl diagnostic > /tmp/diagnostic.txt
2. Attach the file to an email to support@sidefx.com
Did this fix it?

Symptoms

License problem persists and SideFX support asks for diagnostics.

Why it happens

Unresolved licensing issue needs support

This guide also covers

houdini license diagnostic
sesictrl diagnostic
contact sidefx support license

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