Issue: DayZ Xbox Play Anywhere DLC ownership verification failure.
Xbox and Cloud Gaming recognize both Frostline and Badlands DLC. The Windows Xbox app and Microsoft Store show the DLC installed, but DayZ reports 0x00010009 DLC_CHECK_FAILED when joining Sakhal or Nasdara servers.
Chernarus and Livonia work normally.
Troubleshooting completed: three game reinstalls, Microsoft account verification, add-on installation checks, Gaming Services repair, and system restarts.
Please investigate the Microsoft Store PC DLC entitlements and DayZ's ownership verification.