| XUserAddAsync | Asynchronously adds a user to a game session. |
| XUserAddByIdWithUiAsync | Asynchronously adds a user to a game session based on a XUID from a game invite. This function should only be used in response to a game invite. |
| XUserAddByIdWithUiResult | Retrieves a handle to the user that XUserAddByIdWithUiAsync creates. This function should only be used in response to a game invite. |
| XUserAddResult | Retrieves a handle to a user that XUserAddAsync creates. |
| XUserChangeEventCallback | A callback that an application defines for a user change event. |
| XUserCheckPrivilege | Determines if a user has a specific privilege. |
| XUserCloseHandle | Closes a specific user handle. |
| XUserCloseSignOutDeferralHandle | Closes a specific user sign out deferral handle. |
| XUserCompare | Compares two user handles for equality. |
| XUserDefaultAudioEndpointUtf16ChangedCallback | A callback that an application defines and invokes when the default audio endpoint for a user changes. |
| XUserDeviceAssociationChangedCallback | A callback that invokes when the user-device association changes. |
| XUserDuplicateHandle | Duplicates a user handle. |
| XUserFindControllerForUserWithUiAsync | Shows a dialog that will prompt the user to turn on and identify which controller they want to use. |
| XUserFindControllerForUserWithUiResult | Retrieves the application local device ID (APP_LOCAL_DEVICE_ID) that a user has chosen to use. |
| XUserFindForDevice | Retrieves the user ID for a specific device ID. |
| XUserFindUserById | Retrieves the XBox User ID (XUID) for a local user. |
| XUserFindUserByLocalId | Retrieves a handle to the user for a specific local user ID. |
| XUserGetAgeGroup | Returns the age group of a user. |
| XUserGetDefaultAudioEndpointUtf16 | Retrieves the default audio endpoint for a specific user. |
| XUserGetGamerPictureAsync | Asynchronously retrieves the gamer picture for a specific user. |
| XUserGetGamerPictureResult | Retrieves the result of a call to XUserGetGamerPictureAsync. |
| XUserGetGamerPictureResultSize | Returns the buffer size that XUserGetGamerPictureResult requires to retrieve the gamer picture that ]XUserGetGamerPictureAsync](/reference/system/xuser/functions/xusergetgamerpictureasync) returns. |
| XUserGetGamertag | Retrieves the gamertag for a specific user. |
| XUserGetId | Gets the user ID for a specific user. |
| XUserGetIsGuest | Returns a boolean indicating if a user is a guest. |
| XUserGetLocalId | Retrieves a unique game session id for a user. |
| XUserGetMaxUsers | Retrieves the maximum number of users that a game session allows on the current platform. |
| XUserGetMsaTokenSilentlyAsync | This function is now deprecated. |
| XUserGetMsaTokenSilentlyResult | This function is now deprecated. |
| XUserGetMsaTokenSilentlyResultSize | This function is now deprecated. |
| XUserGetSignOutDeferral | Retrieves a handle to the sign out deferral. |
| XUserGetState | Retrieves the state of a user. |
| XUserGetTokenAndSignatureAsync | Asynchronously retrieves xtokens and signatures for web requests. |
| XUserGetTokenAndSignatureResult | Gets the result of a call to XUserGetTokenAndSignatureAsync. |
| XUserGetTokenAndSignatureResultSize | Gets the buffer size for holding the results of a call to XUserGetTokenAndSignatureAsync. |
| XUserGetTokenAndSignatureUtf16Async | Asynchronously retrieves Unicode xtokens and signatures for web requests. |
| XUserGetTokenAndSignatureUtf16Result | Gets the result of a call to XUserGetTokenAndSignatureUtf16Async. |
| XUserGetTokenAndSignatureUtf16ResultSize | Gets the buffer size for holding the results of a call to XUserGetTokenAndSignatureUtf16Async. |
| XUserIsStoreUser | Checks if the XUser MSA is the same as the MSA signed into the Microsoft Store. |
| XUserRegisterForChangeEvent | Registers a callback for a user change event. |
| XUserRegisterForDefaultAudioEndpointUtf16Changed | Registers a callback that the application defines and invokes when the default audio endpoint changes. |
| XUserRegisterForDeviceAssociationChanged | Registers a callback for user device association change events. |
| XUserResolveIssueWithUiAsync | Displays a system User Interface for solving token issues with a non-unicode URL. |
| XUserResolveIssueWithUiResult | Retrieves the result of a call to XUserResolveIssueWithUiAsync. |
| XUserResolveIssueWithUiUtf16Async | Displays a system User Interface for solving token issues with a specific unicode URL. |
| XUserResolveIssueWithUiUtf16Result | Retrieves the result of a call to XUserResolveIssueWithUiUtf16Async. |
| XUserResolvePrivilegeWithUiAsync | Displays a resolution user interface for required user privileges. |
| XUserResolvePrivilegeWithUiResult | Retrieves the result of a call to XUserResolvePrivilegeWithUiAsync. |
| XUserUnregisterForChangeEvent | Unregisters a previously registered user change callback. |
| XUserUnregisterForDefaultAudioEndpointUtf16Changed | Unregisters a previously-registered default audio endpoint change callback. |
| XUserUnregisterForDeviceAssociationChanged | Unregisters a previously registered user device association change callback. |
| xUserPlatformRemoteConnectSetEventHandlers | Sets the remote connect event handlers |
| XUserPlatformRemoteConnectCancelPrompt | Signal to XUser that the remote connect prompt has been dismissed by the user. |
| XUserPlatformRemoteConnectShowPromptEventHandler | Show prompt for remote connect authentication event handler. |
| XUserPlatformRemoteConnectClosePromptEventHandler | Close prompt for remote authentication event handler. |
| XUserPlatformSpopPromptEventHandler | Show prompt for SPOP operation event handler |
| XUserPlatformSpopPromptSetEventHandlers | Sets the SPOP prompt event handler. |
| XUserPlatformSpopPromptClearEventHandler | Clears the SPOP prompt event handler in XUser. |
| XUserPlatformSpopPromptComplete | Signal to XUser that the user finished interacting with the SPOP prompt. |
