Minimum requirements for using Slack

If you’re curious about the technical requirements needed to run Slack, read on to learn which operating systems (OS) and browsers we support.

Tip: If you’re running into issues with downloading the latest version of the desktop app, visit Update the Slack desktop app.

Note: Starting 1st September 2021, Slack will no longer support several operating systems and browsers. Visit Slack’s deprecation schedule to learn more.

Desktop apps

Operating system Requirements
Mac OS X OS X 10.11 or above
Windows Windows 8 or above
Linux Fedora 28 or above
Ubuntu LTS releases 16.04 or above
Red Hat Enterprise Linux 7.0 or above

Note: Slack supports Transport Layer Security (TLS) version 1.2. 

Mobile apps

Operating system Requirements
iOS iOS 12.2 or above
Android Android 6.0 or above

Web browsers




Version 66 or above


Version 60 or above


Version 11.0 or above

Microsoft Edge

Version 41 or above

Note: Google Chrome is the only browser that supports Slack Calls.

Unsupported browsers and operating systems

To deliver the best possible Slack experience, we keep our list of supported browsers and operating systems short. We don’t fix bugs or issues for unsupported browsers, so we do our best to block them from accessing Slack.