Before trying any of the following steps check the BlizzardCS Twitter for any service interruptions.

Follow the steps below to troubleshoot latency or disconnection problems. Select your game from the dropdown at the bottom for game-specific troubleshooting.

  1. Reset your network devices to make sure your router hasn't become flooded with data.
  2. If you're using a wireless connection, optimize your internet connection to rule out a connection issue.
  3. Update your drivers to resolve any compatibility issues.
  4. Release and renew your IP and flush your DNS to resolve any network conflicts.
  5. Try closing background applications to resolve any software conflicts.
Advanced Troubleshooting
  1. Your Windows Hosts file may contain incorrect entries. Check and reset any incorrect Hosts file entries.
  2. Check your network configuration to find any issues with your firewall, router, or port settings.
  3. Disable any proxies that may interfere with the login module.
  4. Follow the steps on our Network Card Support article to resolve issues with your networking hardware.
  5. Disable or temporarily uninstall any security programs, which may mistakenly identify the login module as a security threat.
  1. Reset your network devices to make sure your router hasn't become flooded with data.
  2. Run Software Update to check for pending updates to software, drivers, and firmware.
  3. If you're using a wireless connection, optimize your internet connection to rule out a connection issue.
  4. Release and renew your IP and flush your DNS to resolve any network conflicts.
  5. Try closing background applications to resolve any software conflicts.
Advanced Troubleshooting
  1. Repair Disk Permissions to resolve any permission conflicts with logon modules.
  2. Check your network configuration to find any issues with your firewall, router, or port settings.
  3. Disable any proxies that may interfere with the login module.
  4. Disable or temporarily uninstall any security programs, which may mistakenly identify the login module as a security threat.