System Error Codes (500-999)

This information is intended for developers debugging system errors. For other errors, such as issues with Windows Update, there is a list of resources on the Error codes page.

The following list describes system error codes (errors 500 to 999). They are returned by the GetLastError function when many functions fail. To retrieve the description text for the error in your application, use the FormatMessage function with the FORMAT_MESSAGE_FROM_SYSTEM flag.

ERROR_USER_PROFILE_LOAD

User profile cannot be loaded.

ERROR_ARITHMETIC_OVERFLOW

Arithmetic result exceeded 32 bits.

ERROR_PIPE_CONNECTED

There is a process on other end of the pipe.

ERROR_PIPE_LISTENING

Waiting for a process to open the other end of the pipe.

ERROR_VERIFIER_STOP

Application verifier has found an error in the current process.

ERROR_ABIOS_ERROR

An error occurred in the ABIOS subsystem.

ERROR_WX86_WARNING

A warning occurred in the WX86 subsystem.

ERROR_WX86_ERROR

An error occurred in the WX86 subsystem.

ERROR_TIMER_NOT_CANCELED

An attempt was made to cancel or set a timer that has an associated APC and the subject thread is not the thread that originally set the timer with an associated APC routine.

ERROR_UNWIND

Unwind exception code.

ERROR_BAD_STACK

An invalid or unaligned stack was encountered during an unwind operation.

ERROR_INVALID_UNWIND_TARGET

An invalid unwind target was encountered during an unwind operation.

ERROR_INVALID_PORT_ATTRIBUTES

Invalid Object Attributes specified to NtCreatePort or invalid Port Attributes specified to NtConnectPort

ERROR_PORT_MESSAGE_TOO_LONG

Length of message passed to NtRequestPort or NtRequestWaitReplyPort was longer than the maximum message allowed by the port.

ERROR_INVALID_QUOTA_LOWER

An attempt was made to lower a quota limit below the current usage.

ERROR_DEVICE_ALREADY_ATTACHED

An attempt was made to attach to a device that was already attached to another device.

ERROR_INSTRUCTION_MISALIGNMENT

An attempt was made to execute an instruction at an unaligned address and the host system does not support unaligned instruction references.

ERROR_PROFILING_NOT_STARTED

Profiling not started.

ERROR_PROFILING_NOT_STOPPED

Profiling not stopped.

ERROR_COULD_NOT_INTERPRET

The passed ACL did not contain the minimum required information.

ERROR_PROFILING_AT_LIMIT

The number of active profiling objects is at the maximum and no more may be started.

ERROR_CANT_WAIT

Used to indicate that an operation cannot continue without blocking for I/O.

ERROR_CANT_TERMINATE_SELF

Indicates that a thread attempted to terminate itself by default (called NtTerminateThread with NULL) and it was the last thread in the current process.

ERROR_UNEXPECTED_MM_CREATE_ERR

If an MM error is returned which is not defined in the standard FsRtl filter, it is converted to one of the following errors which is guaranteed to be in the filter. In this case information is lost, however, the filter correctly handles the exception.

ERROR_UNEXPECTED_MM_MAP_ERROR

If an MM error is returned which is not defined in the standard FsRtl filter, it is converted to one of the following errors which is guaranteed to be in the filter. In this case information is lost, however, the filter correctly handles the exception.

ERROR_UNEXPECTED_MM_EXTEND_ERR

If an MM error is returned which is not defined in the standard FsRtl filter, it is converted to one of the following errors which is guaranteed to be in the filter. In this case information is lost, however, the filter correctly handles the exception.

ERROR_BAD_FUNCTION_TABLE

A malformed function table was encountered during an unwind operation.

ERROR_NO_GUID_TRANSLATION

Indicates that an attempt was made to assign protection to a file system file or directory and one of the SIDs in the security descriptor could not be translated into a GUID that could be stored by the file system. This causes the protection attempt to fail, which may cause a file creation attempt to fail.

ERROR_INVALID_LDT_SIZE

Indicates that an attempt was made to grow an LDT by setting its size, or that the size was not an even number of selectors.

ERROR_INVALID_LDT_OFFSET

Indicates that the starting value for the LDT information was not an integral multiple of the selector size.

ERROR_INVALID_LDT_DESCRIPTOR

Indicates that the user supplied an invalid descriptor when trying to set up Ldt descriptors.

ERROR_TOO_MANY_THREADS

Indicates a process has too many threads to perform the requested action. For example, assignment of a primary token may only be performed when a process has zero or one threads.

ERROR_THREAD_NOT_IN_PROCESS

An attempt was made to operate on a thread within a specific process, but the thread specified is not in the process specified.

ERROR_PAGEFILE_QUOTA_EXCEEDED

Page file quota was exceeded.

ERROR_LOGON_SERVER_CONFLICT

The Netlogon service cannot start because another Netlogon service running in the domain conflicts with the specified role.

ERROR_SYNCHRONIZATION_REQUIRED

The SAM database on a Windows Server is significantly out of synchronization with the copy on the Domain Controller. A complete synchronization is required.

ERROR_NET_OPEN_FAILED

The NtCreateFile API failed. This error should never be returned to an application, it is a place holder for the Windows Lan Manager Redirector to use in its internal error mapping routines.

ERROR_IO_PRIVILEGE_FAILED

The I/O permissions for the process could not be changed.

ERROR_CONTROL_C_EXIT

The application terminated as a result of a CTRL+C.

ERROR_MISSING_SYSTEMFILE

The required system file %hs is bad or missing.

ERROR_UNHANDLED_EXCEPTION

The exception %s (0x%08lx) occurred in the application at location 0x%08lx.

ERROR_APP_INIT_FAILURE

The application was unable to start correctly (0x%lx). Click OK to close the application.

ERROR_PAGEFILE_CREATE_FAILED

The creation of the paging file %hs failed (%lx). The requested size was %ld.

ERROR_INVALID_IMAGE_HASH

Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source.

ERROR_NO_PAGEFILE

No paging file was specified in the system configuration.

ERROR_ILLEGAL_FLOAT_CONTEXT

A real-mode application issued a floating-point instruction and floating-point hardware is not present.

ERROR_NO_EVENT_PAIR

An event pair synchronization operation was performed using the thread specific client/server event pair object, but no event pair object was associated with the thread.

ERROR_DOMAIN_CTRLR_CONFIG_ERROR

A Windows Server has an incorrect configuration.

ERROR_ILLEGAL_CHARACTER

An illegal character was encountered. For a multi-byte character set this includes a lead byte without a succeeding trail byte. For the Unicode character set this includes the characters 0xFFFF and 0xFFFE.

ERROR_UNDEFINED_CHARACTER

The Unicode character is not defined in the Unicode character set installed on the system.

ERROR_FLOPPY_VOLUME

The paging file cannot be created on a floppy diskette.

ERROR_BIOS_FAILED_TO_CONNECT_INTERRUPT

The system BIOS failed to connect a system interrupt to the device or bus for which the device is connected.

ERROR_BACKUP_CONTROLLER

This operation is only allowed for the Primary Domain Controller of the domain.

ERROR_MUTANT_LIMIT_EXCEEDED

An attempt was made to acquire a mutant such that its maximum count would have been exceeded.

ERROR_FS_DRIVER_REQUIRED

A volume has been accessed for which a file system driver is required that has not yet been loaded.

ERROR_CANNOT_LOAD_REGISTRY_FILE

The registry cannot load the hive (file): %hs or its log or alternate. It is corrupt, absent, or not writable.

ERROR_DEBUG_ATTACH_FAILED

DebugActiveProcess> An unexpected failure occurred while processing a DebugActiveProcess API request. You may choose OK to terminate the process, or Cancel to ignore the error.

ERROR_SYSTEM_PROCESS_TERMINATED

The %hs system process terminated unexpectedly with a status of 0x%08x (0x%08x 0x%08x). The system has been shut down.

ERROR_DATA_NOT_ACCEPTED

The TDI client could not handle the data received during an indication.

ERROR_VDM_HARD_ERROR

NTVDM encountered a hard error.

ERROR_DRIVER_CANCEL_TIMEOUT

The driver %hs failed to complete a cancelled I/O request in the allotted time.

ERROR_REPLY_MESSAGE_MISMATCH

An attempt was made to reply to an LPC message, but the thread specified by the client ID in the message was not waiting on that message.

ERROR_LOST_WRITEBEHIND_DATA

Windows was unable to save all the data for the file %hs. The data has been lost. This error may be caused by a failure of your computer hardware or network connection. Please try to save this file elsewhere.

ERROR_CLIENT_SERVER_PARAMETERS_INVALID

The parameter(s) passed to the server in the client/server shared memory window were invalid. Too much data may have been put in the shared memory window.

ERROR_NOT_TINY_STREAM

The stream is not a tiny stream.

ERROR_STACK_OVERFLOW_READ

The request must be handled by the stack overflow code.

ERROR_CONVERT_TO_LARGE

Internal OFS status codes indicating how an allocation operation is handled. Either it is retried after the containing onode is moved or the extent stream is converted to a large stream.

ERROR_FOUND_OUT_OF_SCOPE

The attempt to find the object found an object matching by ID on the volume but it is out of the scope of the handle used for the operation.

ERROR_ALLOCATE_BUCKET

The bucket array must be grown. Retry transaction after doing so.

ERROR_MARSHALL_OVERFLOW

The user/kernel marshalling buffer has overflowed.

ERROR_INVALID_VARIANT

The supplied variant structure contains invalid data.

ERROR_BAD_COMPRESSION_BUFFER

The specified buffer contains ill-formed data.

ERROR_AUDIT_FAILED

An attempt to generate a security audit failed.

ERROR_TIMER_RESOLUTION_NOT_SET

The timer resolution was not previously set by the current process.

ERROR_INSUFFICIENT_LOGON_INFO

There is insufficient account information to log you on.

ERROR_BAD_DLL_ENTRYPOINT

The dynamic link library %hs is not written correctly. The stack pointer has been left in an inconsistent state. The entrypoint should be declared as WINAPI or STDCALL. Select YES to fail the DLL load. Select NO to continue execution. Selecting NO may cause the application to operate incorrectly.

ERROR_BAD_SERVICE_ENTRYPOINT

The %hs service is not written correctly. The stack pointer has been left in an inconsistent state. The callback entrypoint should be declared as WINAPI or STDCALL. Selecting OK will cause the service to continue operation. However, the service process may operate incorrectly.

ERROR_IP_ADDRESS_CONFLICT1

There is an IP address conflict with another system on the network.

ERROR_IP_ADDRESS_CONFLICT2

There is an IP address conflict with another system on the network.

ERROR_REGISTRY_QUOTA_LIMIT

The system has reached the maximum size allowed for the system part of the registry. Additional storage requests will be ignored.

ERROR_NO_CALLBACK_ACTIVE

A callback return system service cannot be executed when no callback is active.

ERROR_PWD_TOO_SHORT

The password provided is too short to meet the policy of your user account. Please choose a longer password.

ERROR_PWD_TOO_RECENT

The policy of your user account does not allow you to change passwords too frequently. This is done to prevent users from changing back to a familiar, but potentially discovered, password. If you feel your password has been compromised then please contact your administrator immediately to have a new one assigned.

ERROR_PWD_HISTORY_CONFLICT

You have attempted to change your password to one that you have used in the past. The policy of your user account does not allow this. Please select a password that you have not previously used.

ERROR_UNSUPPORTED_COMPRESSION

The specified compression format is unsupported.

ERROR_INVALID_HW_PROFILE

The specified hardware profile configuration is invalid.

ERROR_INVALID_PLUGPLAY_DEVICE_PATH

The specified Plug and Play registry device path is invalid.

ERROR_QUOTA_LIST_INCONSISTENT

The specified quota list is internally inconsistent with its descriptor.

ERROR_EVALUATION_EXPIRATION

The evaluation period for this installation of Windows has expired. This system will shutdown in 1 hour. To restore access to this installation of Windows, please upgrade this installation using a licensed distribution of this product.

ERROR_ILLEGAL_DLL_RELOCATION

The system DLL %hs was relocated in memory. The application will not run properly. The relocation occurred because the DLL %hs occupied an address range reserved for Windows system DLLs. The vendor supplying the DLL should be contacted for a new DLL.

ERROR_DLL_INIT_FAILED_LOGOFF

The application failed to initialize because the window station is shutting down.

ERROR_VALIDATE_CONTINUE

The validation process needs to continue on to the next step.

ERROR_NO_MORE_MATCHES

There are no more matches for the current index enumeration.

ERROR_RANGE_LIST_CONFLICT

The range could not be added to the range list because of a conflict.

ERROR_SERVER_SID_MISMATCH

The server process is running under a SID different than that required by client.

ERROR_CANT_ENABLE_DENY_ONLY

A group marked use for deny only cannot be enabled.

ERROR_FLOAT_MULTIPLE_FAULTS

Multiple floating point faults.

ERROR_FLOAT_MULTIPLE_TRAPS

Multiple floating point traps.

ERROR_NOINTERFACE

The requested interface is not supported.

ERROR_DRIVER_FAILED_SLEEP

The driver %hs does not support standby mode. Updating this driver may allow the system to go to standby mode.

ERROR_CORRUPT_SYSTEM_FILE

The system file %1 has become corrupt and has been replaced.

ERROR_COMMITMENT_MINIMUM

Your system is low on virtual memory. Windows is increasing the size of your virtual memory paging file. During this process, memory requests for some applications may be denied. For more information, see Help.

ERROR_PNP_RESTART_ENUMERATION

A device was removed so enumeration must be restarted.

ERROR_SYSTEM_IMAGE_BAD_SIGNATURE

The system image %s is not properly signed. The file has been replaced with the signed file. The system has been shut down.

ERROR_PNP_REBOOT_REQUIRED

Device will not start without a reboot.

ERROR_INSUFFICIENT_POWER

There is not enough power to complete the requested operation.

ERROR_MULTIPLE_FAULT_VIOLATION

ERROR_SYSTEM_SHUTDOWN

The system is in the process of shutting down.

ERROR_PORT_NOT_SET

An attempt to remove a processes DebugPort was made, but a port was not already associated with the process.

ERROR_DS_VERSION_CHECK_FAILURE

This version of Windows is not compatible with the behavior version of directory forest, domain or domain controller.

ERROR_RANGE_NOT_FOUND

The specified range could not be found in the range list.

ERROR_NOT_SAFE_MODE_DRIVER

The driver was not loaded because the system is booting into safe mode.

ERROR_FAILED_DRIVER_ENTRY

The driver was not loaded because it failed its initialization call.

ERROR_DEVICE_ENUMERATION_ERROR

The «%hs» encountered an error while applying power or reading the device configuration. This may be caused by a failure of your hardware or by a poor connection.

ERROR_MOUNT_POINT_NOT_RESOLVED

The create operation failed because the name contained at least one mount point which resolves to a volume to which the specified device object is not attached.

ERROR_INVALID_DEVICE_OBJECT_PARAMETER

The device object parameter is either not a valid device object or is not attached to the volume specified by the file name.

ERROR_MCA_OCCURED

A Machine Check Error has occurred. Please check the system eventlog for additional information.

ERROR_DRIVER_DATABASE_ERROR

There was error [%2] processing the driver database.

ERROR_SYSTEM_HIVE_TOO_LARGE

System hive size has exceeded its limit.

ERROR_DRIVER_FAILED_PRIOR_UNLOAD

The driver could not be loaded because a previous version of the driver is still in memory.

ERROR_VOLSNAP_PREPARE_HIBERNATE

Please wait while the Volume Shadow Copy Service prepares volume %hs for hibernation.

ERROR_HIBERNATION_FAILURE

The system has failed to hibernate (The error code is %hs). Hibernation will be disabled until the system is restarted.

ERROR_PWD_TOO_LONG

The password provided is too long to meet the policy of your user account. Please choose a shorter password.

ERROR_FILE_SYSTEM_LIMITATION

The requested operation could not be completed due to a file system limitation.

ERROR_ASSERTION_FAILURE

An assertion failure has occurred.

ERROR_ACPI_ERROR

An error occurred in the ACPI subsystem.

ERROR_WOW_ASSERTION

WOW Assertion Error.

ERROR_PNP_BAD_MPS_TABLE

A device is missing in the system BIOS MPS table. This device will not be used. Please contact your system vendor for system BIOS update.

ERROR_PNP_TRANSLATION_FAILED

A translator failed to translate resources.

ERROR_PNP_IRQ_TRANSLATION_FAILED

A IRQ translator failed to translate resources.

ERROR_PNP_INVALID_ID

Driver %2 returned invalid ID for a child device (%3).

ERROR_WAKE_SYSTEM_DEBUGGER

the system debugger was awakened by an interrupt.

ERROR_HANDLES_CLOSED

Handles to objects have been automatically closed as a result of the requested operation.

ERROR_EXTRANEOUS_INFORMATION

The specified access control list (ACL) contained more information than was expected.

ERROR_RXACT_COMMIT_NECESSARY

This warning level status indicates that the transaction state already exists for the registry sub-tree, but that a transaction commit was previously aborted. The commit has NOT been completed, but has not been rolled back either (so it may still be committed if desired).

ERROR_MEDIA_CHECK

The media may have changed.

ERROR_GUID_SUBSTITUTION_MADE

During the translation of a global identifier (GUID) to a Windows security ID (SID), no administratively-defined GUID prefix was found. A substitute prefix was used, which will not compromise system security. However, this may provide a more restrictive access than intended.

ERROR_STOPPED_ON_SYMLINK

The create operation stopped after reaching a symbolic link.

ERROR_LONGJUMP

A long jump has been executed.

ERROR_PLUGPLAY_QUERY_VETOED

The Plug and Play query operation was not successful.

ERROR_UNWIND_CONSOLIDATE

A frame consolidation has been executed.

ERROR_REGISTRY_HIVE_RECOVERED

Registry hive (file): %hs was corrupted and it has been recovered. Some data might have been lost.

ERROR_DLL_MIGHT_BE_INSECURE

The application is attempting to run executable code from the module %hs. This may be insecure. An alternative, %hs, is available. Should the application use the secure module %hs?

ERROR_DLL_MIGHT_BE_INCOMPATIBLE

The application is loading executable code from the module %hs. This is secure, but may be incompatible with previous releases of the operating system. An alternative, %hs, is available. Should the application use the secure module %hs?

ERROR_DBG_EXCEPTION_NOT_HANDLED

Debugger did not handle the exception.

ERROR_DBG_REPLY_LATER

Debugger will reply later.

ERROR_DBG_UNABLE_TO_PROVIDE_HANDLE

Debugger cannot provide handle.

ERROR_DBG_TERMINATE_THREAD

Debugger terminated thread.

ERROR_DBG_TERMINATE_PROCESS

Debugger terminated process.

ERROR_DBG_CONTROL_C

Debugger got control C.

ERROR_DBG_PRINTEXCEPTION_C

Debugger printed exception on control C.

ERROR_DBG_RIPEXCEPTION

Debugger received RIP exception.

ERROR_DBG_CONTROL_BREAK

Debugger received control break.

ERROR_DBG_COMMAND_EXCEPTION

Debugger command communication exception.

ERROR_OBJECT_NAME_EXISTS