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.).
38 codes
0x000000E7WarningERROR_PIPE_BUSY
All pipe instances are busy.
0x000000F0WarningERROR_SESSION_CREDENTIAL_CONFLICT
Multiple connections to a server using more than one username are not allowed.
0x000003E3WarningERROR_OPERATION_ABORTED
The I/O operation has been aborted because of either a thread exit or an application request.
0x000004D5WarningERROR_RETRY
The operation could not be completed. A retry should be performed.
0x00000644WarningERROR_INSTALL_SUSPEND
Installation suspended — incomplete.
0x00000652WarningERROR_INSTALL_ALREADY_RUNNING
Another installation is already in progress. Complete that first, or kill msiexec.exe.
0x00000BC2WarningERROR_SUCCESS_REBOOT_REQUIRED
Installation succeeded but a reboot is required to complete.
0x0000251FWarningDNS_ERROR_RCODE_NAME_ERROR
DNS name does not exist.
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