---
title: "How to Enable .NET Profiling on IIS Server"
slug: "faq-enable-apm-existing-iis-servers"
description: "Find how to enable Retrace APM on Existing IIS Servers. There are 2 options: using the Retrace UI or manually updating the Stackify.ini."
updated: 2020-12-31T21:38:49Z
published: 2020-12-31T21:38:49Z
canonical: "docs.stackify.com/faq-enable-apm-existing-iis-servers"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stackify.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to Enable .NET Profiling on Existing IIS Server

If you have already installed an Agent on a server but didn't enable APM at that time, you can simply go to the appropriate server and enable CLR Profiling.

## Option 1: Using the Retrace UI

To do this go to the settings icon to the right of the server, and go to Server Settings

![](https://cdn.document360.io/3fcaf473-a1ef-4778-aa2c-fd28411c2b01/Images/Documentation/e8732cc7-ed06-4f10-8fad-41ac54a82a88.png)

From Server Settings, you can simply click Enable APM

> Note: By enabling CLR Profiling in the Server Settings window, IIS on that server will be restarted automatically.

## Option 2: Manually updating the Stackify.ini

If you wish to enable APM Profiling on a server that is already running an Agent without APM enabled, but don't want to control it via the Retrace Dashboard

1. Open [Install Drive]:\Program Files (x86)\Stackify\Stackify.ini. Find the following [Features] section:

```
[Feature]
EnableProfiler=0
RestartIIS=1
ProfilerStarted=0
```

1. Modify the following keys to alter the profiler settings:

```
EnableProfiler=1
```

- Blank = disabled
- 0 = disabled
- 1 = enabled

```
RestartIIS=1
```

(IIS behavior when the the "EnableProfiler" setting has changed and the agent restarts)

- Blank = no restart
- 0 = no restart
- 1 = restart

1. Restart the service Stackify Monitoring Service via the Windows Services console

> Note: Depending on the chosen method for enabling profiling, you may need to manually restart IIS for profiling and data collection to begin.