> For the complete documentation index, see [llms.txt](https://docs.engagevr.io/developer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.engagevr.io/developer/creating-ifx/testing-ifx-locally-on-windows.md).

# Testing IFX locally on Windows

You can create a collection of IFX in the ENGAGE SDK, and then test it in the ENGAGE app. However, the IFX are restricted to your development machine. Other users in a Session will not be able to see the IFX.

To test your IFX on a Windows device, complete the following steps:

1. Build an asset bundle for the Windows platform. For more information, see [Building an IFX bundle](/developer/creating-ifx/building-bundles-ifx.md).
2. Open the ENGAGE app, and then log in.
3. Start a Session.
4. Open your menu, and then select **IFX**.
5. Press F10.
6. In the **Test Local IFX Bundle** window, select **BROWSE**.
7. In the **Select Local IFX Bundle** window, browse to and select your IFX bundle, and then select **Open**. After you build an asset bundle, it's saved in the `/AssetBundles/Windows` subfolder of your local SDK repository folder.
8. In the **Test Local IFX Bundle** window, for the IFX that you want to test, select **LOAD**.

{% hint style="info" %}
You can use the profiling tools in ENGAGE to analyse your IFX and identify any performance issues. For more information, see [Profiling](/developer/profiling.md).
{% endhint %}