Leaving Arc on Windows

Arc for Windows stops working on December 22, 2026, same day as Mac (official timeline).

Export on Windows

Press Ctrl+, then Advanced > Export Spaces and tabs > Export Data (Arc Help Center).
Back up the sidebar file: %LOCALAPPDATA%\Packages\TheBrowserCompany.Arc_<id>\LocalCache\Local\Arc\StorableSidebar.json. Paste %LOCALAPPDATA%\Packages into File Explorer and open the folder starting with TheBrowserCompany.Arc_.
Moving to Dia? Quit Arc before importing, or Dia reports a locked Cookies file (source).

Many community migration tools are Mac-first; Windows support in them is often experimental or unverified. Check each README.

Arc alternatives that run on Windows

Dia: official Arc importer.
Zen: Spaces and sidebar; no DRM video.
Vivaldi: Workspaces.
Edge: Workspaces, vertical tabs.
Helium, Brave, Chrome, Firefox.

Not on Windows: Orion (Kagi ended Windows development; Kagi blog).

FAQ

Where is StorableSidebar.json on Windows?

%LOCALAPPDATA%\Packages\TheBrowserCompany.Arc_<id>\LocalCache\Local\Arc\StorableSidebar.json

Does Arc for Windows shut down on a different date?

No. Arc for macOS and Windows both stop working on Dec 22, 2026.

Related: compare alternatives · quiz · export guide · all guides

Want it done in one sitting?

Everything above is free. If you'd rather follow one checklist with tested scripts (Mac and Windows) and a verification step, the Arc Migration Kit is $12 with a 30-day refund. You don't need it if the free route works for you.