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Slack's deprecation schedule

To ensure we can deliver a consistent experience for our customers, Slack deprecates support for app versions, browsers, and operating systems (OS) every six months, in March and September. This article contains the most up-to-date information on upcoming deprecations and a full record of past deprecations. If you're using any of the versions listed below, upgrade to continue using Slack.

Tip: To see which OS and browser versions we support, visit System requirements for using Slack.


Desktop deprecations

Operating systems (OS)

Mac

Windows

Linux

OS version End of support
10.13 and below Sept. 1, 2021
10.10 March 1, 2021

Note: Windows OS deprecations include LTSB/LTSC versions.

OS version End of support

Windows 10
Version 1809

March 1, 2022

Windows 10
Version 1803

March 1, 2022
Windows Server
Version 2008 R2
Sept. 1, 2021
Windows Server
Version 2008
Sept. 1, 2021
Windows 10
Version 1903
Sept. 1, 2021
Windows 10
Version 1709 and below
Sept. 1, 2021
Windows 7 March 1, 2021
OS version End of support
Fedora 34 and below March 1, 2022
Redhat 7 March 1, 2022
Ubuntu 16.04 and below Sept. 1, 2021
Fedora 31 and below Sept. 1, 2021

Note: If you’re using a Windows, Mac, or Linux OS that has reached end of support, you’ll still be able to access Slack as long as you’re using a supported app version, but you won’t receive app updates. Slack won’t be available to download from the App Store, Microsoft Store, or Snap.


Slack app versions

App version End of support
4.13.0 and below March 1, 2022
4.8.0 and below Sept. 1, 2021


Mobile deprecations

Operating systems (OS)

iOS

Android

OS version End of support
13.2 and below Sept. 1, 2021
OS version End of support
7.1 and below Sept. 1, 2021


Slack app versions

iOS

Android

App version End of support
20.07.20 and below Sept. 1, 2021
App version End of support
20.07.20 and below Sept. 1, 2021


Browser deprecations

Browser version End of support
Safari 14.0.3 and below March 1, 2022
Chrome 88 and below March 1, 2022
Firefox 86 and below March 1, 2022
Edge 88 and below March 1, 2022
Internet Explorer 11* March 1, 2022
Safari 13.1.2
Sept. 1, 2021
Chrome 82 Sept. 1, 2021
Firefox 77 Sept. 1, 2021
Edge 83 Sept. 1, 2021

*As of July, 2019, customers cannot use Slack from Internet Explorer 11, but they can still sign in and manage their workspace settings from this browser until March 2022.

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