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How to Resolve Diablo 4 Preload Error 315306: Unable to Find a Valid License


Since its release, Diablo 4 has attracted numerous players and has seen richer content and gameplay through several seasons of updates. Before every major version update, the game opens up for pre-loading, allowing players to prepare in advance.


However, at this time, a problem often troubles some players, which is the error code 315306, with the message "Unable to Find a Valid License for Diablo IV," preventing players from entering the game immediately. In this guide, we will analyze the reasons behind the appearance of Diablo 4 error code 315306 and introduce effective solutions.


How to Resolve Diablo 4 Preload Error 315306



Reasons of Diablo 4 Preload Error 315306


The appearance of error code 315306 in Diablo 4, indicating "Unable to Find a Valid License for Diablo IV," can be attributed to several factors. Understanding these reasons is crucial in troubleshooting and resolving the issue to ensure a smooth gaming experience. Below are the primary causes:

  • Account Issues: If your Blizzard account does not have a valid Diablo 4 license attached to it, this error can occur. This means that either the game hasn't been purchased on the account you're logged into, or there's an issue with the account recognition on Blizzard's end.
  • Server Issues: Sometimes, the Blizzard servers might be experiencing difficulties, or maintenance work could be underway. During such times, the server might fail to verify the game licenses properly, leading to this error.
  • Network Connection Problems: A weak or unstable internet connection can hinder communication between your gaming device and Blizzard's servers. If the connection is insufficient for license verification, the error might pop up.
  • Corrupted Game Files: Corrupted or missing game files can also cause error code 315306. If the game launcher cannot access all necessary files due to corruption, it might fail to verify the game license.


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How to fix Diablo 4 Error Code 315306


Fortunately, gamers have reported 4 effective methods to fix the error code and successfully load Diablo 4.


Method 1: Use GearUP Booster


Using GearUP Booster is the fastest way to solve the network issues causing Diablo 4 error code 315306. It boasts several exclusive technologies, including adaptive intelligent routing. This technology automatically matches the best data transmission route for you through algorithms, avoiding network congestion and peak fluctuations, thus maintaining connection stability. Furthermore, GearUP Booster can also reduce your ping and latency in Diablo 4, decrease packet loss, allowing for a smoother gameplay experience throughout the season. All these optimizations require just a few simple steps and are fully compliant with gaming regulations, making them safe for everyone to use.



  • Free trial.
  • Simple user interface.
  • Does not impact computer performance.
  • Supports thousands of games.
  • Features several exclusive technologies.


Step 1: Download and install GearUP Booster.


Free Trial-2


Step 2: Launch the program, search Diablo IV.


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Step 3: Select Server and Node.


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Step 4: Remember Click to boost first, and then launch your game.



Method 2: Verify Game Ownership

Step 1: Log in to your Blizzard account through the official website or the client.

Step 2: Navigate to the "Account Settings" section and select "Games & Subscriptions."

Step 3: Scroll through the list of games associated with your account to confirm if Diablo 4 is listed and ensure it's correctly linked to your account.

Step 4: If Diablo 4 is not listed, you may need to purchase the game or redeem a game code to add it to your account.



Method 3: Check for Server Status

Step 1: Visit the official Blizzard or Diablo 4 website, or use third-party services like Downdetector, to check for any announcements regarding server maintenance or ongoing issues.

Step 2: If server issues are reported, wait for an official update from Blizzard regarding the resolution.

Step 3: Once servers are confirmed to be operational again, try accessing the game to see if the error persists.



Method 4: Ensure Game Files Integrity

Step 1: Open the client on your computer.

Step 2: Navigate to Diablo 4 in your game library.

Step 3: Click on the "Options" button located above the "Play" button, then select "Scan and Repair" from the dropdown menu.

Step 4: Follow the on-screen instructions to allow the client to check for corrupted or missing game files and automatically repair them.

Step 5: Once the process is complete, relaunch Diablo 4 to see if the issue has been resolved.





In conclusion, while encountering error code 315306 when trying to load Diablo 4 can be frustrating, there are effective solutions available. By following the three methods mentioned above, users can quickly fix the issue and enjoy the highly anticipated game.