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Windows error code lookup

Server side

Decode an HRESULT, Win32, NTSTATUS, MSI, Windows Update or Intune error code

Input

Hex (0x80070005 or 80070005), decimal (-2147024891 or 5), or a symbolic name such as ERROR_ACCESS_DENIED. An unprefixed eight-digit value is read as hex.

This tool runs on the AdminForge server, which needs to reach the target you enter. Nothing is stored or logged. Do not paste secrets into a server-side tool on an instance you do not control.

Fill in the form and run the tool. Results appear here.

Even when a code is not in the dataset, the HRESULT decomposition still tells you a lot: the facility names the component that raised it, and a FACILITY_WIN32 result carries an ordinary Win32 error in its low sixteen bits, which is looked up automatically. The dataset lives in a JSON file — adding entries is a pull request with no C# in it.