# How do I install Applane and sign in?

> Install from the Chrome Web Store or get it force-installed, sign in with your work account, and turn on the Google Apps Script API once.

Source: https://docs.applane.dev/builders/install-and-sign-in/

**Who:** Builder: anyone in the builders group  
**Time:** 3 minutes

## Install

If your IT team force-installed Applane, the icon is already in your Chrome toolbar. Skip to sign in.

Otherwise, install it from the Chrome Web Store listing your IT team sent you, or search for Applane there. If the store says the extension is blocked by your administrator, ask IT to allow it: [Chrome extension policy](https://docs.applane.dev/workspace-admins/chrome-extension-policy/).

Applane works in Chrome, Edge and Brave.

## Sign in

1. Click the Applane icon. The side panel opens.
2. If asked, type your work email. Most managed setups skip this because IT pinned the company domain.
3. Google's sign-in opens under your company's own app name (for example "Applane (Acme)"). Pick your work account and accept the permissions. What each one is for: [Scopes reference](https://docs.applane.dev/security/scopes/).
4. The panel opens on your workspace.

Use your work account. A personal Google account is refused before anything runs.

## Turn on the Apps Script API

The first time, the panel shows a card: "Turn on the Apps Script API". This is a personal Google setting that has nothing to do with Applane; without it Google refuses to create Apps Script projects for you.

1. Click the link, or open [script.google.com/home/usersettings](https://script.google.com/home/usersettings).
2. Set **Google Apps Script API** to **On**.
3. Come back to the panel. It re-checks on its own.

More on why: [Apps Script API per-user setting](https://docs.applane.dev/workspace-admins/apps-script-api/).

## If sign-in refuses you

| Message | What it means | Who fixes it |
|---|---|---|
| `unknown_domain` | Your company has not verified its domain with Applane yet. | The Applane admin. [Verify your domain](https://docs.applane.dev/console/verify-domain/) |
| `seat_cap_reached` | All seats are taken. The message names the admins to ask. | The Applane admin raises the cap or frees a seat. |
| `not_allowlisted` | Your company uses an allowlist and you are not on it. | The Applane admin adds you. |
| `extension_too_old` | Your version is below the minimum. | You: update at `chrome://extensions`, or wait for the managed update. |
| `billing_required` | The trial or subscription has ended. | The owner. [Billing](https://docs.applane.dev/console/billing/) |
| `access_denied` from Google | The consent screen is not Internal, or you used the wrong account. | Try your work account; then the GCP admin. |

All of them in one place: [Error messages](https://docs.applane.dev/reference/errors/).

## Next

[Your first app](https://docs.applane.dev/builders/first-app/).