How do I find what a Windows error code means?

Copy the hex or decimal value from the dialog, Event Viewer, or blue screen, and enter it in this lookup. The result names the error and explains the usual cause.

How do I troubleshoot Windows error codes?

Identify the family (STOP, Win32, update, activation, or event), reproduce the action, then follow the next steps here. Collect a minidump or the Event 1001 body before you reinstall.

Where can I look up a Windows error code?

Use this free Windows error code lookup for common STOP, Win32, HRESULT, Update, Activation, and Event Log values. Pair it with Event Viewer on the PC.

What should I do after finding a Windows error?

Write the code in the ticket, apply the next check (driver, disk, DNS, service, or key), and only escalate or reimage if that check fails.

Can I search Windows error codes by number?

Yes. Search by hex (0x80070005), decimal (5), STOP name, or Event ID such as 41.

What is Windows Error Code Lookup?

A free online tool that explains common Windows error codes for help desk technicians, system administrators, and IT students.

How does the Windows Error Code Lookup work?

It matches the text you type against a local catalogue of codes we teach in Windows IT administration, then shows meaning, causes, and an example.

How do I use the Windows Error Code Lookup?

Paste the code, optionally pick a category, and read the selected result. Example chips load the codes we see most often.

Is this Windows Error Code Lookup free to use?

Yes. It is free with no sign-up.

Can I use the Windows Error Code Lookup on mobile?

Yes. Mobile browsers are supported, so you can look up a code while you stand at the desk.

All free tools

Free tool

Windows

Windows Error Code Lookup

Look up a Windows error code and get the meaning, likely causes, and the next check we run on the help desk.

Runs in your browser — your data stays on your device

Free tool

Error code, HRESULT, Event ID, or name

Examples

2 matches in the local catalogue

Code: 0x80070035
Name: ERROR_BAD_NETPATH (HRESULT)
Category: HRESULT
What it means: The HRESULT form of Win32 53. The network path was not found.
Common causes: DNS, SMB, or firewall issues. Not usually a wrong password.
What to do next: Test \\IP\share, confirm port 445, and fix name resolution before you reset the password.
Example from the help desk: Windows 11 24H2 plus a guest NAS that still speaks SMBv1 produces 0x80070035 until you enable the SMB 1 client or upgrade the NAS.

A Windows error code is useful only when you know what to do with it. On the help desk we see the same handful of values every week: 0x80070035 on a share, 0x80070422 when Windows Update is disabled, Event 41 after a hard power-off, and STOP 0x0000007B after a disk clone. This free Windows error code lookup turns a hex HRESULT, a decimal Win32 code, a STOP name, or an Event ID into a plain-English meaning, the causes we actually find, and the next step we take before we reimage the PC. Use it for Windows 11 troubleshooting, desktop support, and IT coursework.

How to use the Windows Error Code Lookup

1
Type the code exactly as Windows showed it, for example 0x80070035, 5, or IRQL_NOT_LESS_OR_EQUAL.
2
Filter by STOP, Win32, HRESULT, Windows Update, Activation, or Event Log if you already know the family.
3
Read the meaning, common causes, and next steps, then copy the code into your ticket notes.

Why we look the code up before we guess

Beginners treat every dialog as 'Windows is broken'. Experienced technicians read the number. 0x80070035 is a path problem, not a password problem. 0xC004F074 is a KMS reachability problem, not a bad ISO. Event 41 is a symptom of an unexpected shutdown, not a root cause. Looking the code up first saves the reinstall that hides the real fault. That habit is what we drill in Windows IT administration labs.

Windows error code lookup with examples

Enter 0x80070035. The tool explains that the network path was not found and tells you to try \\IP\share and test TCP 445 before you reset the password. That is the first share ticket most help desk technicians learn, and it is still the most common Windows 11 desktop-support call we see.

Guides and next steps

Privacy note

Lookups run in your browser against a local catalogue. We do not send the code you type to our servers.

Frequently asked questions

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