> For the complete documentation index, see [llms.txt](https://docs.sealights.io/knowledgebase/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sealights.io/knowledgebase/setup-and-configuration/troubleshooting-faq/.net-.netcore/linux-.netcore-profiler-fails-to-start.md).

# Linux .NETCore: Profiler Fails to Start

## Problem <a href="#problem" id="problem"></a>

I see the TestListener entry in the Cockpit Live agents attached to my application under test, but the Profiler doesn’t start.\
Even when I enable logs to file nothing happens despite the permissions to the executables, files and folders look good.

## Cause <a href="#cause" id="cause"></a>

Sometimes there are missing dependencies on Linux, and the Profiler cannot tell us about it since its process fails immediately before the initialization of the logger.

## Solution <a href="#solution" id="solution"></a>

You can use the Linux `ldd` command to show dependencies of the agent’s library on Linux (see [ldd(1) - Linux manual page](https://man7.org/linux/man-pages/man1/ldd.1.html) )

{% code overflow="wrap" lineNumbers="true" %}

```
ldd libSL.DotNet.ProfilerLib.Linux.so
# OR ldd <path-to-agent>/libSL.DotNet.ProfilerLib.Linux.so
```

{% endcode %}

It will produce a status of the agent dependencies like in the screenshot below

<figure><img src="/files/2A2hxk5GMMBcbcru1CYF" alt=""><figcaption></figcaption></figure>

If you cannot resolve the missing dependency, don't hesitate to get in touch with [Sealights Support](https://docs.sealights.io/knowledgebase/contact-support).


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