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 |
|---|---|---|---|---|
| -1027 |
nbpDuplicate
Duplicate NetBIOS Name Protocol entry.
|
macOS | CarbonCore | MacErrors.h |
| -1029 |
nbpNISErr
NetBIOS Name Protocol NIS error.
|
macOS | CarbonCore | MacErrors.h |
| -1025 |
nbpNoConfirm
NBP (NetBIOS) no confirmation error.
|
macOS | CarbonCore | MacErrors.h |
| -1028 |
nbpNotFound
No matching name binding protocol entry found
|
macOS | CarbonCore | MacErrors.h |
| 5 |
NEAppProxyFlowErrorAborted
NEAppProxyFlow operation was aborted.
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEAppProxyFlow.h |
| 3 |
NEAppProxyFlowErrorHostUnreachable
Proxy host is unreachable.
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEAppProxyFlow.h |
| 8 |
NEAppProxyFlowErrorInternal
Internal error in Network Extension app proxy flow
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEAppProxyFlow.h |
| 4 |
NEAppProxyFlowErrorInvalidArgument
NetworkExtension app proxy flow invalid argument.
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEAppProxyFlow.h |
| 1 |
NEAppProxyFlowErrorNotConnected
App proxy flow is not connected.
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEAppProxyFlow.h |
| 2 |
NEAppProxyFlowErrorPeerReset
Peer reset in App Proxy Flow.
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEAppProxyFlow.h |
| 6 |
NEAppProxyFlowErrorRefused
Connection refused in App Proxy Flow.
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEAppProxyFlow.h |
| 7 |
NEAppProxyFlowErrorTimedOut
Operation timed out in NE app proxy flow
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEAppProxyFlow.h |
| 1 |
NEAppPushManagerErrorConfigurationInvalid
Invalid configuration for app push manager
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEAppPushManager.h |
| 2 |
NEAppPushManagerErrorConfigurationNotLoaded
Configuration not loaded in NEAppPushManager.
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEAppPushManager.h |
| 4 |
NEAppPushManagerErrorInactiveSession
Push manager session is inactive
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEAppPushManager.h |
| 3 |
NEAppPushManagerErrorInternalError
Internal error.
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEAppPushManager.h |
| 4 |
NEDNSProxyManagerErrorConfigurationCannotBeRemoved
NetworkExtension DNS proxy manager configuration cannot be removed.
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEDNSProxyManager.h |
| 2 |
NEDNSProxyManagerErrorConfigurationDisabled
DNS proxy manager configuration disabled.
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEDNSProxyManager.h |
| 1 |
NEDNSProxyManagerErrorConfigurationInvalid
DNS proxy manager config is invalid.
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEDNSProxyManager.h |
| 3 |
NEDNSProxyManagerErrorConfigurationStale
NetworkExtension: DNS Proxy Manager configuration stale.
|
iOS, macOS, tvOS, visionOS, watchOS | NetworkExtension | NEDNSProxyManager.h |