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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.).

All categories System errors Windows Update BSOD stop NT Status AD / Kerberos RPC / Network WMI MSI Installer Office activation BitLocker DNS VPN / Remote Hyper-V COM / DCOM

Severity:All severities Critical Error Warning Info

12 codes

0x80070035Error

ERROR_BAD_NETPATH

The network path was not found. Check firewall, SMB settings, and network connectivity.

RPC / Network-2147024843

0x80070043Error

ERROR_BAD_NET_NAME

The network name cannot be found. Check the UNC path or DNS resolution.

RPC / Network-2147024829

0x800706BAError

RPC_S_SERVER_UNAVAILABLE

The RPC server is unavailable. Check that the target machine is online and firewall allows RPC.

RPC / Network-2147023174

0x800706BEError

RPC_S_CALL_FAILED

The remote procedure call failed. Network issue or service crash on remote end.

RPC / Network-2147023170

0x800706BFError

RPC_S_CALL_FAILED_DNE

The remote procedure call failed and did not execute.

RPC / Network-2147023169

0x800706D9Error

EPT_S_NOT_REGISTERED

No endpoint registered. The service on the remote machine is not running.

RPC / Network-2147023143

0x80072EE2Error

WININET_E_TIMEOUT

The operation timed out. Check network connectivity and proxy settings.

RPC / Network-2147012894

0x80072EE7Error

WININET_E_NAME_NOT_RESOLVED

The server name or address could not be resolved. DNS issue.

RPC / Network-2147012889

0x80072EFDError

WININET_E_CANNOT_CONNECT

A connection with the server could not be established.

RPC / Network-2147012867

0x80072EFEError

WININET_E_CONNECTION_ABORTED

The connection with the server was terminated abnormally.

RPC / Network-2147012866

0x80072EFFError

WININET_E_CONNECTION_RESET

The connection with the server was reset.

RPC / Network-2147012865

0x80072F0CError

WININET_E_INVALID_CA

The certificate authority is invalid or incorrect. SSL/TLS certificate issue.

RPC / Network-2147012852