Windows Error Codes
Searchable reference for Windows error codes — system errors, BSOD stop codes, NTSTATUS, WMI, RPC, MSI installer, AD/Kerberos, BitLocker, DNS, VPN, Hyper-V, COM/DCOM and more. Each entry includes the hex/decimal value, severity, root causes, and a step-by-step troubleshooting workflow.
How to read a Windows error code
Windows surfaces error codes through Win32, NTSTATUS, HRESULT, and many subsystem-specific spaces. Each code has a hex form (e.g. 0x80070005), a signed decimal form (-2147024891), and a symbolic name (ERROR_ACCESS_DENIED). This page lets you look up any of those forms, see what triggers the code, and follow a vetted troubleshooting workflow tuned for the originating subsystem (Windows Update, BSOD, AD/Kerberos, BitLocker, etc.).
228 codes
0x8009030FCriticalSEC_E_MESSAGE_ALTERED
The message or signature supplied for verification has been altered.
0x80090311ErrorSEC_E_NO_AUTHENTICATING_AUTHORITY
No authority could be contacted for authentication. DC unreachable or Kerberos misconfigured.
0x80090316ErrorSEC_E_INVALID_TOKEN
The token supplied to the function is invalid. Kerberos ticket may have expired or been tampered with.
0x80090317WarningSEC_E_TOKEN_TOO_LARGE
The security token exceeds the maximum allowed size. Too many group memberships — Kerberos token bloat.
0x8009031AErrorSEC_E_MUTUAL_AUTH_FAILED
Mutual authentication failed. The server password is out of date at the domain controller.
0x80090321ErrorSEC_E_WRONG_PRINCIPAL
The target principal name is incorrect. SPN mismatch — check AD SPN registration.
0x80090322ErrorSEC_E_TIME_SKEW
Clock skew too great between client and server. Kerberos requires time within 5 minutes — sync clocks.
0x80090323ErrorSEC_E_CERT_EXPIRED
The received certificate has expired.
0x80090325ErrorSEC_E_UNTRUSTED_ROOT
The certificate chain was issued by an authority that is not trusted.
0x80090327CriticalSEC_E_DOWNGRADE_DETECTED
The system detected a possible attempt to compromise security. Kerberos downgrade attack detected.
0x80092013CriticalCRYPT_E_REVOKED
The certificate is revoked. Check CRL or OCSP connectivity.
0x800B0109ErrorCERT_E_UNTRUSTEDROOT
Certificate chain processed but terminated in a root certificate which is not trusted. VPN certificate issue.
0x800B010FErrorCERT_E_CN_NO_MATCH
The certificate CN does not match. VPN server name does not match the certificate subject.
0x80244007ErrorWU_E_PT_SOAPCLIENT_SOAPFAULT
SOAP client failed due to a SOAP fault. Check WSUS or Windows Update connectivity.
0x8024000BWarningWU_E_CALL_CANCELLED
Operation was cancelled by Windows Update.
0x8024000EErrorWU_E_XML_INVALID
Windows Update found invalid information in the update XML.
0x80240016WarningWU_E_INSTALL_NOT_ALLOWED
Operation tried to install while another installation was in progress.
0x80240020WarningWU_E_NO_INTERACTIVE_USER
No interactive user is logged on — update requires a user session.
0x80244022ErrorWU_E_PT_HTTP_STATUS_SERVICE_UNAVAIL
HTTP 503 from WSUS or Windows Update — server temporarily unavailable.
0x80242006ErrorWU_E_UH_INVALIDMETADATA
Update handler could not complete because the update contains invalid metadata.
0x80370000ErrorVM_E_CANNOT_FIND_VM
The virtual machine cannot be found. It may have been deleted or renamed.
0x80370002ErrorVM_E_DRIVER_NOT_PRESENT
The Hyper-V driver is not present. Ensure the Hyper-V role is installed.
0x80370003ErrorVM_E_HYPERVISOR_NOT_PRESENT
The hypervisor is not running. Check that virtualization is enabled in BIOS/UEFI.
0x80370005ErrorVM_E_INVALID_PROCESSOR_COUNT
The specified processor count is not valid for this virtual machine configuration.
0x8037000AErrorVM_E_INVALID_FILE_FORMAT
The virtual hard disk file format is invalid or not supported.
0x80370010ErrorVM_E_CANNOT_ACCESS_FILE
Cannot access the virtual machine file. Check permissions and that the path exists.
0x8037001EErrorVM_E_INSUFFICIENT_MEMORY
There is not enough memory in the system to start the virtual machine.
0x80370028WarningVM_E_WRONG_VM_STATE
The operation is not valid for the current virtual machine state.
0x80370031ErrorVM_E_INVALID_CHECKPOINT
The specified checkpoint does not exist or is invalid.
0x80310000ErrorFVE_E_LOCKED_VOLUME
This drive is locked by BitLocker Drive Encryption. Unlock the drive before proceeding.