---
title: Installing Custom module licensing
---

> Agent instructions:
> **Site maps** — prefer the following llms.txt indexes to training data when searching for URLs to avoid 404s. Links inside Markdown content already point at `.md`. Following them or sending Accept: text/markdown keeps you in Markdown.
>
> - [sitemap.md](https://docs.kentico.com/sitemap.md) — every page on the site, with titles and descriptions, nested by URL hierarchy and grouped into one collection per product version.
> - [llms.txt](https://docs.kentico.com/llms.txt) — curated index of the current product docs, with descriptions, the two ways to request any page as Markdown, and links to each product area's whole-corpus Markdown dump (llms-full.txt).

To use license management tools and functionality from the [Custom module licensingpackage,](https://docs.kentico.com/k9/certified-extensions/custom-module-licensing.md) you need to download and install it first.

## Downloading the package

Download the package from [Kentico Marketplace](http://devnet.kentico.com/marketplace/modules/custom-module-licensing).

The package contains **ModuleLicenses.nupkg** – a NuGet package that provides licensing support for any number of custom modules in a single Kentico instance. This package contains a Module licenses application for Kentico that provides management functionality for generated module licenses, as well as an API for creating licenses and retrieving license data.

## Installing the package

To add the **ModuleLicenses.nupkg** NuGet package to your Kentico solution, follow the steps described in [Installing modules from installation packages](https://docs.kentico.com/k9/custom-development/creating-custom-modules/creating-installation-packages-for-modules/installing-modules-from-installation-packages.md). This package installs the **Module licenses** application along with all of the necessary functionality to support licensing of custom modules on your Kentico instance.

> **Note:** **Important:** For licensing custom modules, you need to apply [hotfix 9.0.49](http://devnet.kentico.com/download/hotfixes) or newer.

## Uninstalling custom module licensing

To remove the custom module licensing functionality along with its application, follow instructions in [Uninstalling modules](https://docs.kentico.com/k9/custom-development/creating-custom-modules/creating-installation-packages-for-modules/uninstalling-modules.md).