: Launch the game at least once while online and log in to your Blizzard account. This step "authorizes" your computer to play offline for a limited time (typically 30 days ).

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You must log in at least once every 30 days to keep the game authenticated for offline use. System Requirements: RAM: Minimum 2 GB; Recommended 4 GB. Storage: 30 GB available HD space. OS: Windows 7, 8, or 10. 3. Playing Without an Active Connection

Offline mode is designed for solo play. Certain features are naturally disabled: Available: