Hey! That error can happen for a few reasons, but here are some steps you can try to resolve it:
Check server status: Sometimes the central DayZ servers can go down for maintenance or experience issues. Visit the official DayZ status page or their social media for updates.
Verify your game files: If you're on Steam, use the 'Verify Integrity of Game Files' option in the game properties. This ensures all game files are intact and updated.
Flush your DNS: Open Command Prompt as an admin and type ipconfig /flushdns. This can help if the issue is related to your network's cached data.
Disable firewalls or antivirus temporarily: Sometimes these can block your connection to the server. Disable them briefly to see if this resolves the issue.
Switch servers: Try connecting to a different server. The one you’re attempting to join might be full or experiencing technical issues.
Reinstall the game: As a last resort, reinstall DayZ completely to ensure a clean setup.
Let us know if any of these work for you, and good luck out there!