---
title: "Folder Warning Icon | Free Download PNG & SVG | Ultimate Duotone"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/folder-warning--15975
canonical_url: "https://www.streamlinehq.com/icons/download/folder-warning--15975"
summary: "Clean duotone icon of a folder with an overlapping warning triangle. Used for file errors and alerts."
---

# Folder Warning icon

The Folder Warning icon shows a folder with an overlapping triangular warning sign containing an exclamation mark. Drawn in the duotone style on a 24px grid with a 1px stroke for clear, adaptable detail. Use it for file errors, unsafe folders, storage alerts, missing files, and warning states. It belongs to Ultimate Duotone set in the Ultimate family.

## Preview

![Clean duotone icon of a folder with an overlapping warning triangle. Used for file errors and alerts.](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/streamline-duotone/files-folders/folders/folder-warning-8t69nxwjxe2s7xcu4v0ppd.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Folder Warning
- **Type**: Icon
- **Set**: [Ultimate Duotone](/icons/streamline-duotone.md) — Ultimate is the world’s largest icon family, designed by 8 expert designers. The Duotone style enhances visual depth by combining colored lines and filled shapes, perfect for matching brand or project colors. Key advantages: 1—Customizable colors. Apply up to four different colors to icon elements. 2— Adjustable stroke thickness. Create looks ranging from thin to bold for varied aesthetics.
- **Family**: [Ultimate](/icons/ultimate-sets.md) — The encyclopedia of icons
- **Style**: Duo, Stroke, Filled
- **Category**: Files Folders › Folders
- **Default size**: 24px
- **Stroke width**: 1px
- **Pricing**: Pro
- **License**: [Commercial](https://home.streamlinehq.com/license-premium)
- **Author**: [Streamline](https://home.streamlinehq.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: folder, warning, alert, error, risk, important, notification, danger, data, bug, storage, directory

## Download

- [Download Folder Warning on Streamline](https://www.streamlinehq.com/icons/download/folder-warning--15975)

## Also available in other styles

- [Folder Warning — Ultimate Colors](/icons/download/folder-warning--19814.md) (Pro)
- [Folder Warning — Ultimate Bold](/icons/download/folder-warning--7746.md) (Pro)
- [Folder Warning — Ultimate Regular](/icons/download/folder-warning--9208.md) (Pro)
- [Folder Warning — Ultimate Light](/icons/download/folder-warning--8477.md) (Pro)

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