Apple Error Codes Database
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 |
|---|---|---|---|---|
| 7004 |
WCErrorCodeSessionNotActivated
WatchConnectivity session not activated.
|
iOS, visionOS, watchOS | WatchConnectivity | WCError.h |
| 7002 |
WCErrorCodeSessionNotSupported
WatchConnectivity session not supported.
|
iOS, visionOS, watchOS | WatchConnectivity | WCError.h |
| 7006 |
WCErrorCodeWatchAppNotInstalled
Required watch app is not installed on the paired device.
|
iOS, visionOS, watchOS | WatchConnectivity | WCError.h |
| 203 |
WebKitErrorBlockedPlugInVersion
WebKit blocked a plugin due to version incompatibility.
|
macOS | WebKit | WebKitErrors.h |
| 200 |
WebKitErrorCannotFindPlugIn
Required WebKit plug-in could not be found.
|
macOS | WebKit | WebKitErrors.h |
| 201 |
WebKitErrorCannotLoadPlugIn
Cannot load WebKit plugin
|
macOS | WebKit | WebKitErrors.h |
| 100 |
WebKitErrorCannotShowMIMEType
Unable to display content of this MIME type.
|
macOS | WebKit | WebKitErrors.h |
| 101 |
WebKitErrorCannotShowURL
WebKit cannot show the specified URL.
|
macOS | WebKit | WebKitErrors.h |
| 102 |
WebKitErrorFrameLoadInterruptedByPolicyChange
WebKit frame load interrupted by policy change
|
macOS | WebKit | WebKitErrors.h |
| 202 |
WebKitErrorJavaUnavailable
Java is unavailable in WebKit.
|
macOS | WebKit | WebKitErrors.h |
| -2021 |
wfFileNotFound
File not found in workflow
|
macOS | CarbonCore | MacErrors.h |
| -5617 |
windowAppModalStateAlreadyExistsErr
Application modal state already exists for the window.
|
macOS | CarbonCore | MacErrors.h |
| -5612 |
windowAttributeImmutableErr
Window attribute is immutable.
|
macOS | CarbonCore | MacErrors.h |
| -5613 |
windowAttributesConflictErr
Conflicting window attributes were specified.
|
macOS | CarbonCore | MacErrors.h |
| -5616 |
windowGroupInvalidErr
Window group invalid.
|
macOS | CarbonCore | MacErrors.h |
| -5614 |
windowManagerInternalErr
Internal error in window manager.
|
macOS | CarbonCore | MacErrors.h |
| -5618 |
windowNoAppModalStateErr
Window has no application modal state in CarbonCore.
|
macOS | CarbonCore | MacErrors.h |
| -5615 |
windowWrongStateErr
Window is in wrong state
|
macOS | CarbonCore | MacErrors.h |
| 4 |
WKErrorJavaScriptExceptionOccurred
JavaScript exception occurred in WebKit.
|
iOS, macOS | WebKit | WKError.h |
| 1 |
WKErrorUnknown
Unknown WebKit error
|
iOS, macOS, visionOS, watchOS | WebKit | WKError.h |