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 |
|---|---|---|---|---|
| -9860 |
eventAlreadyPostedErr
Event already posted.
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9864 |
eventClassIncorrectErr
Event class is incorrect in HIToolbox.
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9862 |
eventClassInvalidErr
Invalid event class provided.
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9865 |
eventDeferAccessibilityEventErr
Accessibility event deferral failed.
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9866 |
eventHandlerAlreadyInstalledErr
An event handler is already installed
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9878 |
eventHotKeyExistsErr
Event hot key already exists
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9879 |
eventHotKeyInvalidErr
Specified hot key is invalid
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9868 |
eventInternalErr
Internal event error.
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9869 |
eventKindIncorrectErr
Event kind incorrect error.
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9876 |
eventLoopQuitErr
Event loop quit error in HIToolbox.
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9875 |
eventLoopTimedOutErr
Event loop timed out waiting for an event
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9874 |
eventNotHandledErr
No event handler processed this event.
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9877 |
eventNotInQueueErr
Event not found in queue.
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9870 |
eventParameterNotFoundErr
Specified event parameter could not be found
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9880 |
eventPassToNextTargetErr
Event was passed to the next target
|
macOS | HIToolbox | CarbonEventsCore.h |
| -9861 |
eventTargetBusyErr
Event target is busy.
|
macOS | HIToolbox | CarbonEventsCore.h |
| 1 |
evtNotEnb
Event not enabled.
|
macOS | CarbonCore | MacErrors.h |
| 35 |
EWOULDBLOCK
Operation would block; non-blocking mode is required.
|
iOS, macOS, tvOS | Kernel | errno.h |
| -95 |
excessCollsns
Too many collisions.
|
macOS | CarbonCore | MacErrors.h |
| 18 |
EXDEV
Cross-device link error; operation not permitted across devices.
|
iOS, macOS, tvOS | Kernel | errno.h |