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Uninstalling Stratos is a two-part job: remove the application, then optionally remove your data. The uninstaller removes the program itself, but it intentionally leaves your settings, login, and flight history in place so a reinstall picks up where you left off. Delete the data folder too if you want a clean slate.
Before you uninstall, make sure you have no active or unsubmitted flight. Your local flight database lives in the data folder — deleting it will permanently discard any in-progress flight or pending flight report. Submit or finish your flight first.

Remove the application

1

Quit Stratos

Right-click the Stratos icon in the system tray (bottom-right of the taskbar) and choose Quit. Closing the window alone isn’t enough — Stratos keeps running in the tray.
2

Uninstall

Open Settings → Apps → Installed apps, find Stratos, click the menu and choose Uninstall. (You can also right-click Stratos in the Start menu and choose Uninstall.)The uninstaller removes the program from C:\Users\<You>\AppData\Local\Programs\Stratos and clears the update cache at C:\Users\<You>\AppData\Local\stratos-updater.
The uninstaller does not delete your personal data in the Roaming folder. To remove that too, follow Remove your data below.

Remove your data

These folders hold your settings, VA login, local flight database, logs, the downloaded app core, and installed airline plugins. The app folder is named Stratos on every platform.
Open File Explorer, paste the path into the address bar, press Enter, and delete the folder.
WhatLocationRemoved by uninstaller?
Your data (Roaming)%APPDATA%\StratosNo — delete manually
Installed program%LOCALAPPDATA%\Programs\StratosYes
Update cache%LOCALAPPDATA%\stratos-updaterYes
%APPDATA% expands to C:\Users\<You>\AppData\Roaming, so your data folder is C:\Users\<You>\AppData\Roaming\Stratos. The AppData folder is hidden by default — pasting %APPDATA%\Stratos into the address bar gets you there regardless.

What’s in the data folder

For reference, here’s what Stratos keeps in its data folder:
File / folderWhat it is
config.jsonApp settings and preferences
auth.jsonYour virtual airline login session
stratos.dbLocal flight database (in-progress flights and crash recovery)
logs/Daily diagnostic log files
core/The downloaded application core (kept up to date automatically)
plugins/Installed airline plugins
plugins-config/Per-plugin settings
airline-icons/Cached airline logos
window-state-*.jsonSaved window size and position
The folder also contains caches the app rebuilds on its own. You can safely delete the entire folder — Stratos recreates it from scratch on next launch.
Keeping the data folder is the easy way to reinstall later without re-entering anything: your VA login, settings, and history come straight back. Only delete it if you want a completely fresh start or are removing Stratos for good.