---
title: "App Window Error 404 Icon | Free Download PNG & SVG | Ultimate Regular"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/app-window-error-404--9081
canonical_url: "https://www.streamlinehq.com/icons/download/app-window-error-404--9081"
summary: "Clean line icon of a rounded app window displaying 404. Used for error pages, broken links, and missing content."
---

# App Window Error 404 icon

The App Window Error 404 icon shows a rounded rectangular app window with a horizontal header divider and “404” centered inside. Drawn in the line style on a 24px grid with a 1.5px stroke so it stays clear in compact interfaces. Use it for error pages, broken links, missing content, unavailable screens, and HTTP status messaging. It belongs to Ultimate Regular set in the Ultimate family.

## Preview

![Clean line icon of a rounded app window displaying 404. Used for error pages, broken links, and missing content.](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/apps-window/app-window-error-404-df04ketgupwidiccaxpc7q.png/app-window-error-404-tamxsxn27ei0l640fxaa67n.png?_a=DATAiZkSZAA0)

## Details

- **Name**: App Window Error 404
- **Type**: Icon
- **Set**: [Ultimate Regular](/icons/streamline-regular.md) — Icon encyclopedia with every concept. Regular style prioritizes simplicity, adapts to light/dark backgrounds. 
- **Family**: [Ultimate](/icons/ultimate-sets.md) — The encyclopedia of icons
- **Style**: Line, Minimal, Stroke
- **Category**: Programming Apps Websites › Apps Window
- **Default size**: 24px
- **Stroke width**: 1.5px
- **Pricing**: Pro
- **License**: [Commercial](https://home.streamlinehq.com/license-premium)
- **Author**: [Streamline](https://home.streamlinehq.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: app, window, error, 404, notfound, fail, glitch, page, not, found, message, http, web, internet, browser, webpage, coding, programming, application, website

## Download

- [Download App Window Error 404 on Streamline](https://www.streamlinehq.com/icons/download/app-window-error-404--9081)

## Also available in other styles

- [App Window Error 404 — Ultimate Light](/icons/download/app-window-error-404--8350.md) (Pro)
- [App Window Error 404 — Ultimate Bold](/icons/download/app-window-error-404--7619.md) (Pro)

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