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
-6222
kDMWrongNumberOfDisplays
Wrong number of displays in Display Manager.
macOS CarbonCore MacErrors.h
-65547
kDNSServiceErr_AlreadyRegistered
Service is already registered.
macOS usr/include dns_sd.h
-65543
kDNSServiceErr_BadFlags
Provided flags are invalid for this DNSService call.
macOS usr/include dns_sd.h
-65552
kDNSServiceErr_BadInterfaceIndex
Invalid interface index was specified.
macOS usr/include dns_sd.h
-65561
kDNSServiceErr_BadKey
Error with a key used by DNSService.
macOS usr/include dns_sd.h
-65540
kDNSServiceErr_BadParam
Parameter passed to DNSService is invalid.
macOS usr/include dns_sd.h
-65541
kDNSServiceErr_BadReference
DNSService reference is invalid.
macOS usr/include dns_sd.h
-65560
kDNSServiceErr_BadSig
Invalid or corrupted signature in DNSService
macOS usr/include dns_sd.h
-65542
kDNSServiceErr_BadState
DNSService is in an invalid.
macOS usr/include dns_sd.h
-65559
kDNSServiceErr_BadTime
Time synchronization error or invalid time caused the DNSService failure.
macOS usr/include dns_sd.h
-65569
kDNSServiceErr_DefunctConnection
DNSService connection is no longer valid.
macOS usr/include dns_sd.h
-65558
kDNSServiceErr_DoubleNAT
Double NAT situation is detected, complicating NAT-PMP or NAT traversal.
macOS usr/include dns_sd.h
-65550
kDNSServiceErr_Firewall
Firewall blocked the DNSService request.
macOS usr/include dns_sd.h
-65551
kDNSServiceErr_Incompatible
Incompatible version or configuration in DNSService.
macOS usr/include dns_sd.h
-65549
kDNSServiceErr_Invalid
Invalid parameter or usage was encountered in DNSService.
macOS usr/include dns_sd.h
-65548
kDNSServiceErr_NameConflict
Service name conflicts with an existing name on the network.
macOS usr/include dns_sd.h
-65565
kDNSServiceErr_NATPortMappingDisabled
NAT port mapping is disabled.
macOS usr/include dns_sd.h
-65564
kDNSServiceErr_NATPortMappingUnsupported
Router or network does not support NAT port mapping.
macOS usr/include dns_sd.h
-65557
kDNSServiceErr_NATTraversal
NAT traversal failed or encountered an error.
macOS usr/include dns_sd.h
-65555
kDNSServiceErr_NoAuth
Authentication is not available for the DNSService request.
macOS usr/include dns_sd.h
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