Error Code Portal
MicrosoftWindows Win32Error code

224

ERROR_FORMS_AUTH_REQUIRED

Alternative forms: 0x000000E0 · 0xE0 · ERROR_FORMS_AUTH_REQUIRED · 0x800700E0

What does this code mean?

Code 224 · An issue reported by Windows Win32.

Official explanation · Original text

Access Denied. Before opening files in this location, you must first add the web site to your trusted sites list, browse to the web site, and select the option to login automatically.

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

System Error Codes (0-499) (WinError.h) ↗

Creator: Microsoft and MicrosoftDocs contributors
License: Creative Commons Attribution 4.0 International
Checked on: 2026-11-12

Modifications: Extracted numeric codes, symbolic names and English message text; converted Markdown/HTML to plain text and normalized whitespace; added Korean product context, namespace labels, status classification and separately labeled official links. No machine translation of message text.

Source details · Original licenses and notices