Many players are encountering persistent connection failed errors when trying to play Call of Duty 21 (COD 21). This guide provides several troubleshooting steps to help resolve this issue.

1. **Optimize Your Network Connection:**

Call of Duty 21 requires a stable and fast internet connection for smooth gameplay. Unstable or slow connections can often lead to connection errors. We recommend using a game booster like Lagofast to optimize your network. Open Lagofast, search for "Call of Duty 21," and select the game to start the optimization process. This can help reduce latency and packet loss, ensuring a stable connection to the game servers and minimizing connection failures and lag.

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2. **Check Server Status:**

Server issues can also cause connection failures in Call of Duty 21. If the game servers are undergoing maintenance or experiencing outages, you won't be able to connect. Check the official game website or social media channels for information about server status and maintenance schedules. Try connecting again once the servers are back online.

3. **Disable Firewalls/Antivirus Software:**

Sometimes, firewalls or antivirus software can interfere with Call of Duty 21's connection. Temporarily disable your firewall and antivirus programs, and then restart the game to see if the issue is resolved.

This guide offers solutions to common Call of Duty 21 connection failed errors, helping you overcome connectivity issues and enjoy uninterrupted gameplay.

Lagofast uses military-grade dedicated lines for game data transmission, effectively solving common online gaming issues such as slow download speeds, disconnections, packet loss, stuttering, and high latency, ensuring a smooth Call of Duty 21 experience.

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