# Signing In

Sign-in to the FleetFusion Geotab Add-In is automatic. If you can sign in to MyGeotab, you can use the add-in, you do not need a separate FleetFusion username or password.

## How sign-in works

When you click any entry under the **FleetFusion** menu in MyGeotab, the add-in uses your existing MyGeotab session to sign you in to FleetFusion in the background. You are taken straight to the page you selected, already authenticated.

There is no separate FleetFusion login screen inside the add-in. Your identity, Organisation, and permissions are determined by your MyGeotab user and your matching FleetFusion user account.

> **Note:** Each MyGeotab user who uses the add-in needs a matching FleetFusion user account in the same Organisation. Your administrator sets these up.

## Before you begin

To sign in successfully you need:

* A working MyGeotab account with access to the database where the add-in is installed.
* A FleetFusion user account in the matching Organisation, using the same username as your MyGeotab account.
* A modern browser (recent versions of Chrome, Edge, or Firefox) with third-party storage allowed for the FleetFusion domain.

## Signing in

To open the add-in:

1. Sign in to MyGeotab as you normally do.
2. Click **FleetFusion** in the sidebar.
3. Select any child entry, for example **Dashboard** or **Vehicles**.

The selected page loads inside MyGeotab, already signed in.

> **Tip:** If you use FleetFusion several times a day, bookmark the MyGeotab URL. Once you are in MyGeotab, the add-in is one click away.

## If sign-in fails

If you see an authentication error or a blank page when you open an add-in entry, the most likely causes are:

* **You do not yet have a FleetFusion user account.** Ask your administrator to provision a FleetFusion user for you in the matching Organisation.
* **Your browser is blocking third-party cookies or storage.** The add-in runs inside a MyGeotab iframe and needs storage access for the FleetFusion domain. Allow third-party storage for FleetFusion in your browser settings, or add the FleetFusion domain to your browser's allow list.
* **The add-in is pointing at the wrong environment.** If your administrator installed the add-in using a development configuration by mistake, the dashboard cannot find your data. Ask your administrator to verify the installation.
* **Your MyGeotab session has expired.** Refresh MyGeotab and sign in again, then re-open the add-in.

For full details on how the add-in authenticates and how to diagnose specific errors, see [How Authentication Works](/geotab-add-in/reference/how-authentication-works.md).

## Signing out

You do not sign out of FleetFusion separately. When you sign out of MyGeotab, your FleetFusion session ends with it. The next time you sign in to MyGeotab and open the add-in, the sign-in handshake runs again automatically.

## Related articles

* [What Is the FleetFusion Geotab Add-In?](/geotab-add-in/getting-started/what-is-the-geotab-addin.md)
* [Installing the Add-In](/geotab-add-in/getting-started/installing-the-addin.md)
* [How Authentication Works](/geotab-add-in/reference/how-authentication-works.md)
* [Navigating the Add-In](/geotab-add-in/getting-started/navigating-the-addin.md)


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