Windows Error Code Decoder

Paste a Windows error code (e.g. 0x80070005, 0x80070643, a decimal like 5, or a stop code like 0x133). Choose the code type for a blue-screen stop code. Auto treats small numbers as Win32 and eight-digit values starting with 8 or 9 as hexadecimal HRESULTs; choose Win32 to override that assumption.

Auto: Win32 / HRESULT Win32 error HRESULT (hex) Blue-screen stop code (hex) Decode

Meanings come from Microsoft's documented error codes (MS-ERREF / Err.exe), baked in — no data leaves your browser. Unknown codes still get a structural breakdown.