XGameRuntimeInit (API contents) - XBOX Game Development Documentation

Reference material for XGameRuntimeInit APIs.

Functions

Function	Description
XGameRuntimeInitialize	Initializes the Gaming Runtime.
XGameRuntimeUninitialize	Uninitializes the Gaming Runtime.

Error Codes

The following error codes may be returned by XGameRuntime APIs. For a complete list, see Error codes.

Code	Value	Description
E_GAMERUNTIME_NOT_INITIALIZED	0x89240100	The game runtime is not initialized.
E_GAMERUNTIME_DLL_NOT_FOUND	0x89240101	The game runtime DLL was not found.
E_GAMERUNTIME_VERSION_MISMATCH	0x89240102	The game runtime DLL does not support this version of the GDK.
E_GAMERUNTIME_WINDOW_NOT_FOREGROUND	0x89240103	The operation requires the application window to be in the foreground.
E_GAMERUNTIME_SUSPENDED	0x89240104	The game runtime is in a suspended state.
E_GAMERUNTIME_UNINITIALIZE_ACTIVEOBJECTS	0x89240105	The game runtime has active objects at XGameRuntimeUninitialize.
E_GAMERUNTIME_MULTIPLAYER_NOT_CONFIGURED	0x89240106	No multiplayer activity is set on the service for this user on this title.
E_GAMERUNTIME_OPTIONS_MISMATCH	0x89240109	The runtime was already initialized with a different set of options. Uninitialize before reinitializing with new options.
E_GAMERUNTIME_OPTIONS_NOT_SUPPORTED	0x8924010A	The options passed are not compatible with the game’s package. The game config information must match the package.
E_GAMERUNTIME_GAMECONFIG_BAD_FORMAT	0x8924010B	The game config passed to Initialize cannot be parsed.
E_GAMERUNTIME_INVALID_HANDLE	0x8924010C	Handles are not valid for use across runtime initializations.

Conceptual documentation

Using C# wrappers for GDK APIs in your Unity project

See also

System API reference

Last modified on October 29, 2026

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