Comprehensive Apple Error Codes

Explore our extensive database of over 5,000 Apple Ecosystem error codes. From macOS to iOS, tvOS, watchOS, and visionOS, each code is presented with its name and a concise description to help you quickly pinpoint and resolve issues.

Whether you’re a developer refining an app or a user troubleshooting a system glitch, this resource empowers you with the knowledge to decode cryptic errors and find actionable solutions. No more guesswork—just clear guidance to keep your projects and devices running smoothly.

Number Name & Description Platforms Framework Header
-5551
gestaltUndefSelectorErr
Gestalt selector is undefined or not recognized.
macOS CarbonCore MacErrors.h
-5550
gestaltUnknownErr
Requested gestalt selector is not recognized.
macOS CarbonCore MacErrors.h
-52
gfpErr
Graphics function parameter error.
macOS CarbonCore MacErrors.h
31
GKErrorAPINotAvailable
GameKit API is not available.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
34
GKErrorAPIObsolete
Deprecated or removed GameKit API.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
37
GKErrorAppUnlisted
App is unlisted in GameKit.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
7
GKErrorAuthenticationInProgress
Authentication is in progress in GameKit.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
2
GKErrorCancelled
Operation cancelled in GameKit.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
19
GKErrorChallengeInvalid
The GameKit challenge is invalid or cannot proceed.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
3
GKErrorCommunicationsFailure
Communications failure in GameKit.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
33
GKErrorConnectionTimeout
GameKit: connection timeout.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
102
GKErrorFriendListDenied
Friend list operation denied by the user or system.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
100
GKErrorFriendListDescriptionMissing
Description is missing for Game Center friend list
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
101
GKErrorFriendListRestricted
Friend list is restricted by GameKit settings.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
103
GKErrorFriendRequestNotAvailable
Unavailable friend request or feature in GameKit.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
29
GKErrorGameSessionRequestInvalid
Game session request data is invalid.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
15
GKErrorGameUnrecognized
Unrecognized or invalid game.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
35
GKErrorICloudUnavailable
iCloud is not available or disabled for GameKit.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
5
GKErrorInvalidCredentials
Invalid user credentials provided for GameKit authentication.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
17
GKErrorInvalidParameter
Invalid parameter in GameKit.
iOS, macOS, tvOS, visionOS, watchOS GameKit GKError.h
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