> ## Documentation Index > Fetch the complete documentation index at: https://docs.skyvexsoftware.com/llms.txt > Use this file to discover all available pages before exploring further. # Signing in > Sign in to your airline in Stratos, fix a browser sign-in that doesn't come back, and what the licence, sign-in-again and session prompts mean. You sign in to Stratos with your account at your virtual airline, not a separate Stratos account. Depending on how your airline is set up, you either type your username and password into Stratos, or sign in on your airline's website in your browser. > [!NOTE] > > **At a glance** > > * Your airline decides how you sign in: a username and password, or **Sign in with** your airline in the browser. > * After signing in, Stratos installs your airline's plugins and opens the first one. > * Stratos may ask you to accept its licence. It never interrupts a flight to do so. > * If your airline asks pilots to sign in again, or your session runs out, Stratos asks you to sign in once more. ## Sign in with a username and password 1. Pick your airline on the **Virtual Airlines** page (see [Choosing an airline](/stratos/choosing-an-airline.md)). 2. Enter your **Username** and **Password** for your airline's website. 3. Click **Sign In**. ![Harbour Virtual's sign-in page in Stratos: Create desktop shortcut, username and password, Sign In, and Back](https://mintcdn.com/skyvexsoftware/Sb1fRnwlSTYcmxHg/images/screenshots/stratos/sign-in-light.webp?fit=max\&auto=format\&n=Sb1fRnwlSTYcmxHg\&q=85\&s=39cb8557340a01d6b291d81ca23cbcff) If Stratos says **This airline hasn't finished setting up Stratos sign-in yet. Please contact the airline.**, the airline is still being set up. Let its staff know. ## Sign in through your browser 1. Pick your airline, then click **Sign in with** and your airline's name. 2. Your browser opens your airline's sign-in page. Sign in there and approve Stratos if it asks. 3. The browser hands you back to Stratos, which carries on by itself. While it waits, the button says **Waiting for sign-in...**. ### If the browser doesn't come back If the browser doesn't hand you back, Stratos shows a **Still waiting?** panel. 1. Make sure you finished signing in in the browser window that opened. Some browsers ask whether to open Stratos: allow it. 2. Click **Try again** to open a fresh sign-in page. 3. Still nothing? Minimise Stratos, copy `stratos://test` from the panel and paste it into your browser's address bar. Stratos should jump to the front. 4. If it doesn't, your computer isn't sending sign-in links to Stratos. Uninstall Stratos, then install the latest version with **Download Stratos** (see [Install Stratos](/guide/getting-started.md)). On Linux, Stratos registers its sign-in links each time it opens. If you moved the AppImage, open it once from its new place before signing in. ## The licence The first time you sign in, and again when the licence changes, Stratos shows the Stratos licence in full. Tick **I've read and understood the licence, and I agree to it.** and click **Continue**. **Decline and sign out** signs you out of your airline and takes you back to the airline list. You can't track flights until you accept. Stratos never shows the licence during a flight, or while a flight is waiting to be recovered. It waits until you've finished. ## After you sign in Stratos then gets your airline's plugins ready, showing **Syncing plugins...** and each plugin as it installs. When it says **Ready**, it opens the first plugin in your sidebar. If a plugin won't install, you'll see **Sync failed** or **Some plugins failed to install**. Click **Retry**, or **Go back** to sign out and return to the airline list. If your airline hasn't added any plugins yet, Stratos shows **Welcome to Stratos** with a note for the airline's staff. ## When Stratos asks you to sign in again ### Your airline asked everyone to sign in again Airlines can ask all their pilots to sign in again, for example after changing how sign-in works. A **Sign in again** window then opens over whatever you're looking at. * It never interrupts a flight. If you're flying, it opens once the flight ends. * You can't start a new flight until you sign in. Sign in with your username and password, or click **Sign in with** your airline to use the browser. If the browser doesn't come back, click **Open the sign-in page again**. * **Sign out** signs you out instead and opens your airline's sign-in page. If you close Stratos first, it opens on your airline's sign-in page next time. ### Session Expired If your airline stops accepting your sign-in, Stratos shows **Session Expired**. If you're flying, Stratos pauses the flight first so no position reports are lost. * **Re-authenticate** opens your airline's sign-in page. Once you're signed in, the paused flight carries on. * **Sign out** signs you out of the airline. ### Your airline has left Stratos If your airline is removed from Stratos, you'll see a page saying it **no longer exists on Stratos**, or **is no longer active on Stratos** if it has been switched off for now. You can't track flights for it. If you were flying, the flight was cancelled and not filed. Click **Choose another airline** to sign out and go back to the airline list. ## Sign out Open **Settings → Account and devices** and click **Sign out** on your airline's card (it's also at the bottom of the Settings section list), then confirm. You can't sign out while a flight is being tracked. You'll need to sign in again before your next flight. ## For VA owners Your sign-in method and **Require pilots to sign in again** are on the **Connection** tab of Settings in Console. See [OAuth sign-in](/guide/oauth-setup.md) and [How changes reach your pilots](/guide/how-changes-reach-pilots.md#requiring-pilots-to-sign-in-again). ## Related * [Choosing an airline](/stratos/choosing-an-airline.md) * [Fly your first flight](/stratos/first-flight.md) * [Pauses and disconnects](/guide/pauses-and-disconnects.md) This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.