Microsoft Backs Epic’s Apple Battle on Game Technology Access

Microsoft Corp. is backing Epic Games Inc. in its fight with Apple Inc.

Epic, a game developer, is set to ask a federal court on Monday to force Apple to restore the Fortnite app to the App Store, and block the iPhone maker from cutting off Epic’s developer tools and limiting its ability to provide key graphics technology to other apps.

The graphics technology, known as Unreal Engine, is a suite of software used by millions of developers to build 3-D games and other products. Cutting off Epic from Apple’s iOS and Mac developer tools would mean the gaming company ...