Tuesday 9 July 2024

How to Fix the Online Play is Blocked Error in Diablo 4: Solutions and Tips


Diablo 4, one of the most anticipated games of the year, has drawn players into its dark and immersive world. However, like any online game, it has its share of issues. One common problem players encounter is the "Online Play is Blocked" error, associated with error code 300031. This article provides a detailed guide on how to fix this issue and get back into the game quickly.

Understanding the Error

What is the Online Play is Blocked Error?

The "Online Play is Blocked" error in Diablo 4 typically appears when there are issues with your internet connection or server problems on Blizzard's end. This error prevents players from logging into the game, disrupting their gameplay experience.

Check for Server Maintenance

Steps to Verify Server Status

Before trying other solutions, check if Blizzard's servers are undergoing maintenance. Visit the official Blizzard Customer Support Twitter account for updates. If maintenance is the issue, you’ll need to wait until servers are back online.

  1. Visit Blizzard Support on Twitter: Check for any announcements regarding server maintenance.
  2. Official Forums: Visit Blizzard’s official forums for real-time updates and player reports.

Power Cycle Your Router

How to Perform a Power Cycle

Power cycling your router can resolve many network-related issues. Here’s how to do it:

  1. Turn off your router.
  2. Unplug the power cable.
  3. Wait for about 4 minutes.
  4. Plug the power cable back in.
  5. Turn on your router.

For console players, performing a power cycle on your console is also recommended.

Update Your Game

Ensuring Your Game is Up to Date

An outdated game version can cause connectivity issues. Ensure your game is up to date by:

  1. Enabling Auto-Updates: Check your settings to make sure auto-updates are enabled.
  2. Manual Updates: If auto-updates are off, manually check for updates and install the latest version.
  3. Restart Diablo 4: Restart the game a few times to ensure it recognizes the latest updates.

Community Reactions

Player Feedback and Tips

Players have shared various tips and solutions on forums and social media. Common suggestions include checking firewall settings, verifying game files, and contacting Blizzard support if the issue persists.

Developer Insights

What Blizzard Says About the Error

Blizzard has acknowledged the "Online Play is Blocked" error and recommends checking server status and ensuring a stable internet connection. They continue to work on resolving such issues to enhance the player experience.

Preventive Measures

Tips to Avoid Future Issues

  1. Stable Internet Connection: Ensure your internet connection is stable and fast.
  2. Regular Updates: Keep your game and system software up to date.
  3. Scheduled Maintenance: Be aware of scheduled maintenance times to avoid unexpected disruptions.


The "Online Play is Blocked" error in Diablo 4 can be frustrating, but with the right steps, it’s usually easy to fix. By checking server status, power cycling your router, and ensuring your game is up to date, you can quickly resolve the issue and get back to enjoying your adventures in Sanctuary.


What causes the Online Play is Blocked error in Diablo 4? The error is usually caused by internet connection issues or server maintenance.

How can I check if Blizzard's servers are down? Check the official Blizzard Customer Support Twitter account or the official forums for updates on server status.

What is power cycling and how do I do it? Power cycling involves turning off and unplugging your router, waiting a few minutes, and then plugging it back in and turning it on.

Do I need to update my game manually? If auto-updates are disabled, you’ll need to manually check for and install updates.

Can firewall settings cause this error? Yes, incorrect firewall settings can block game connections. Ensure Diablo 4 is allowed through your firewall.

What should I do if the error persists? If the error persists, contact Blizzard support for further assistance.