Email Security: URL Defense - Supported Browsers
This document outlines the recommended browsers for use with URL Defense.
Recommended Browsers
As of June 2025, URL Defense is fully supported on the following web browsers:
- Chrome - version 129 or later
- Firefox - version 131.0.1 or later
- Microsoft Edge (Windows only) - All versions supported by the Microsoft Edge Lifecycle Policy
- Safari (macOS only) - version 16.6 or later
Unsupported browsers may work for most links but if you encounter errors we will not be able to open a support case with the vendor to resolve the issue. The recommended workaround is to open the link with one of the supported browsers.
URL redirect failures from unsupported browsers are likely to result in the following landing page:
More information related to browser troubleshooting can be found in the Email Security: URL Defense FAQ