The Diablo 4 “Unable to find a valid license” error, also known as Error Code 315306, is one of many problems that can occur with the game. Unfortunately, this specific issue is one of a numerous codes related to server problems. The confusing “valid license” part essentially boils down to a login issue, and the PC version of the game in particular has suffered many related errors during the numerous betas. Here are some solutions you can attempt to repair Error Code 315306 for Diablo 4.
How to fix Diablo 4 “Unable to Find a Valid License” error
You can fix the Diablo 4 “Unable to Find a Valid License” error by waiting for the online servers to return online.
We recommend checking whether the online servers are down, which you can do by heading to the official Diablo 4 Twitter or other third-party websites like Downdetector to see if other users are experiencing server outages too. Given that D4 doesn’t have an offline mode, unlike past Diablo games, there’s bound to be many maintenance periods.
Error Code 315306 happened in prior D4 betas mainly to players who attempted to log into the game before the servers went live. So it seems clear that the license can only be given when they are available, as validating the license is necessary to connect with the servers in the place.
That said, this error can also occur if Blizzard is trying to throttle players in order to prevent server overload. Some users report that they have received this particular error code even when the servers in their region were still available.
Fortunately, Blizzard is very quick in solving server-related issues, so it’s only a matter of time before the online servers return. All it takes is a little bit of patience before this particular error resolves itself on its own.
