Error Lookup Tool

by Microsoft Corporationv6.4.5

Microsoft.err

Last updated Apr 28, 2026

The Error Lookup Tool, also known as "ERR", is a command-line tool to decode many Microsoft error codes. It does not require elevation and is very easy to use.

Install with winget

$ winget install --id Microsoft.err --exact --version 6.4.5

Run in Command Prompt, PowerShell, or Windows Terminal. Prompts for any agreements.

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Installers · v6.4.5

Architecture	Type	Scope	Install	Download
x86	portable	-		Direct

Copy a command tailored to that specific architecture, type, and scope - useful when winget would otherwise pick a different default.

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Frequently asked questions

How do I install Error Lookup Tool on Windows?

Open Windows Terminal, PowerShell, or Command Prompt and run: winget install --id Microsoft.err --exact --version 6.4.5. winget downloads the installer from Microsoft Corporation and runs it. Requires Windows 10 (1809+) or Windows 11.

How do I install Error Lookup Tool silently for unattended deployment?

Add --silent and accept the agreements upfront: winget install --id Microsoft.err --exact 6.4.5 --silent --accept-package-agreements --accept-source-agreements. This is the variant Intune, Configuration Manager, and other deployment tools should use.

How do I uninstall Error Lookup Tool via winget?

Run: winget uninstall --id Microsoft.err --exact. Add --silent for unattended uninstalls. winget will use the registered uninstaller from Error Lookup Tool's Apps & Features entry.

Is Error Lookup Tool free?

Error Lookup Tool is distributed under Proprietary. Refer to the publisher for the full license terms - Wingetly itself does not charge for installation.

Does Error Lookup Tool work on Windows 10?

Yes, as long as your Windows 10 build supports winget (1809 or newer). winget ships with App Installer on Windows 10/11 and pulls Error Lookup Tool directly from the publisher.

How do I keep Error Lookup Tool up to date?

Run winget upgrade --id Microsoft.err --exact, or winget upgrade --all to update everything winget tracks. We index 1 version of Error Lookup Tool from microsoft/winget-pkgs.