---
title: Managing site licenses
related:
  - https://docs.kentico.com/k11/configuring-kentico/managing-sites.md
  - https://docs.kentico.com/k11/configuring-kentico/managing-sites/setting-domain-names-for-sites.md
---

> 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).

Kentico requires a license key for every [domain](https://docs.kentico.com/k11/configuring-kentico/managing-sites/setting-domain-names-for-sites.md) that your sites use. You cannot view or edit sites running on domains that do not have a matching license in the system. If you do not have a valid license for the current domain, only global applications are available in the administration interface.

To manage your system's licenses, open the **Licenses** application in the Kentico administration interface.

![Managing licenses in the system](https://docs.kentico.com/docsassets/k11/managing-site-licenses/Licenses.png "Managing licenses in the system")

When you obtain a license key (full or trial) for a domain:

1. Click **New license**.
2. Copy the full license key into the field.
3. Click **Save**.

The Licenses page displays a list of all licenses added to your system, including the domain names, expiration dates and license editions.

A domain can only have one attached license. If you are replacing an expired license or upgrading the license to a higher version, you first need to delete the current license by clicking the delete button (). Deleting a license does not in any way affect the content or settings of the site running on the given domain.

> **Note:** **License expiration**
>
> Most licenses have a specified expiration date, and become invalid midnight (0 hours) at the **start** of the given date. For example, if a license has an expiration date of December 31, the last day it remains functional is December 30.

## Obtaining licenses

You can generate your license keys on the [Kentico Client Portal](https://client.kentico.com/).

On the Client Portal, you need to register your license (Serial Number) which we have sent you after you bought Kentico. You can then generate new license keys based on the registered license. If you cannot sign in to the Client Portal, please contact the person in your company who has the credentials and the license.

## How licensing works

License keys support all protocol and www prefix combinations for the specified domain. Every valid license key also allows you to use the local server's hostname (_localhost_ and loopback IP addresses – _127.X.Y.Z_).

For example, if you add a license key for the _**example.com**_ domain, you can use all of the following domains:

- _http://example.com_
- _https://example.com_
- _http://www.example.com_
- _https://www.example.com_
- _http://localhost_
- _http://127.X.Y.Z_ (where X, Y and Z are in the range 0–255)

If your site uses [domain aliases](https://docs.kentico.com/k11/configuring-kentico/managing-sites/setting-domain-names-for-sites.md) (different domain names that point to the same website) or a **Presentation URL** with a different domain, you need to add extra license keys for these domains.You can generate the domain alias license keys on the [Kentico Client Portal](https://client.kentico.com/). Domain alias licenses are free of charge if you already own a license for the main domain.