# Download and connect

> Connect the app to an installation your company already runs.

Source: https://usefiretower.com/docs/join

Open the desktop app. This is where you enter the Firetower domain provided by your administrator.

![Desktop connection screen](https://usefiretower.com/product/guide-join-page-light.webp)

Desktop connection screen. Desktop app · sample data. Select to enlarge.

## Before you start

-   Get your Firetower URL and sign-in details from an administrator.
-   Connect to your company VPN if the installation is private.
-   Use macOS or Windows for the desktop app. iOS and Android are available for mobile access.

## Connect from your computer

1.  **Open your Firetower URL in a browser.** Sign in. Replace a temporary password when prompted.
2.  **Download the desktop app from the installation’s download page.** Choose macOS or Windows. Install and open it.
3.  **Enter the same Firetower URL in the app.** Complete sign-in with your own account.
4.  **Check access.** Open Machines and check that a machine is available to you. Connect an agent account, or use one your team has shared.

**Expected result**

The app opens your company’s installation. An empty workspace list is normal on your first visit.

## If you cannot connect

| What you see | What to check |
| --- | --- |
| Server cannot be reached | Open the same URL in a browser on this device. Check the VPN and the hostname. |
| Sign-in rejected | Use your Firetower credentials, not your GitHub or agent account. Ask an administrator to reset your password if needed. |
| No machines available | Ask for access to a shared machine. Administrators must add a worker before anyone can run work. |

Next: [connect an agent account](https://usefiretower.com/docs/accounts) or [start your first task](https://usefiretower.com/docs/first-run) .