# License Limits (/self-host/enterprise-edition/limits)

> How Enterprise Edition counts users and sites, and what happens when you go over



A self-hosted Enterprise license has two capacity numbers: **users** and **sites**. The quantities are on your license key. Published tier ceilings are on the [Self-Hosted pricing page](https://pangolin.net/pricing#Self-Hosted). This page explains how those numbers are counted.

The host license is invalid when registered users **exceed** the user quantity, or sites **exceed** the site quantity. Matching the limit exactly is allowed.

## How users are counted [#how-users-are-counted]

Every registered account counts, whether or not that person has ever connected a device or is online right now.

The count is one row per account on the server, across every organization. A person who belongs to more than one organization counts **once**. Server admin accounts count, because they are accounts on the server.

Accounts that have never registered a device or logged in still count. Archiving or blocking a device does not remove the account.

### What does not count as a user [#what-does-not-count-as-a-user]

* **Machine clients** authenticate with an ID and secret and are not tied to a user account. They do not count.
* **Person clients** (devices) do not count on their own. The account they belong to is what counts, even if that account has several devices.
* **Concurrent sessions** are not checked against the license.

## How sites are counted [#how-sites-are-counted]

Every site on the server counts, across every organization.

## Where to see the numbers [#where-to-see-the-numbers]

* **Server Admin**, **Users** (`/admin/users`): the flattened account list for the whole server, not per organization.
* **Server Admin**, **License** (`/admin/license`): usage against the key, shown as used users out of the licensed maximum, and the same for sites.

## More than one key on the same server [#more-than-one-key-on-the-same-server]

Each Pangolin server (one database) needs its own license. You cannot share one key across servers.

You can activate more than one key on the **same** server. User quantities add together, and site quantities add together. The host uses the highest tier among the valid keys.

A personal-use key does not add capacity when a paid key is also active on that server. The personal key is ignored for the totals.

## When you are over the limit [#when-you-are-over-the-limit]

The key itself can still say valid. The host shows **Unlicensed**, and a red banner sits along the bottom of the dashboard:

> Invalid or expired license keys detected. Follow license terms to continue using all features.

Enterprise features that need a valid license stay unavailable until you are back within the quantities on the key, and a license left over the limit can be revoked.

Delete accounts or sites until you are at or under the licensed quantity, or add capacity with a higher tier or another key on the same server. See [Commercial use](/self-host/enterprise-edition/commercial-use).