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How do I enable decompilation? We're using FusionReactor Ultimate Edition on prem, v 2025.1.0.

The nearest I could find was this page, but the "see ..." wasn't a link.

<https://docs.fusionreactor.io/Profiler/Profiler/#example1-decompile-a-class>

```Decompilation is not enabled by default if you are accessing FusionReactor over the external web server, for more information on how to enable this and more locations you are able to decompile a class see [On the fly Decompile)(/On-the-fly-Decompile.md)```

<@U04HEMTFF62> can you help out Nick on this question please

Hi Nick, decompilation should be enabled if you are not using FR over an external web server. Clicking on the class in a profile will decompile it for you. I've raised that broken docs link to our content team to get it fixed, thanks for letting us know.

If you are using decompilation over an external web server, you can activate it with the following JVM arg:
`-Dfr.decompile.external.enabled=true`

If you have previously added the arg to turn off decompilation, it may resemble `-Dfr.decompile.enabled=false` which will need to be changed to true. Please note this arg is not required if not present, as it is set to true by default.