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Uninstalling GlirOS and deleting your data
Delete my data (desktop app)
Settings > Security > Delete my data removes your chats, settings, files, added tools, logs and the keys GlirOS kept in Windows Credential Manager from this PC. The downloaded AI models are a separate choice and are kept unless you tick it. GlirOS restarts and removes the folders before it opens anything, then starts as on the first day. Make a backup first (Settings > Backup) if you may want anything back. If the PC is linked for remote access, remove it at home.gliros.com; a paid tool's place on this PC is freed on its seller's page.
Uninstall (desktop app)
Settings > About > Uninstall GlirOS…, or Windows Settings > Apps > GlirOS > Uninstall. It removes the app, its shortcuts, "start with Windows" and its entry in the Apps list. Your data and models are kept by default (they come back if you install again); tick the boxes to remove them too. At the end a window lists what was removed and kept. The Microsoft Store version is uninstalled from Windows Settings > Apps; use Delete my data first to remove your data and keys.
The web version
Its chats and settings are kept in the browser's own storage for www.gliros.com (the web version is at www.gliros.com/app): clear that site's data in the browser's settings to remove them.
This guide is the same text GlirOS itself uses to answer questions about GlirOS.