Slack deprecation policy for app versions, browsers, and operating systems

To ensure we’re able to deliver a consistent experience for our customers, Slack deprecates support for app versions, browsers, and operating systems (OS) every six months. Customers will be notified six months prior to the start of a deprecation process to allow ample time for planning and upgrading.

What to expect

  • Slack desktop and mobile app versions, browsers, and OS that do not meet the criteria for support will be deprecated twice per year, on or around February 1 and August 1.
  • Prior to beginning the deprecation process, Slack will notify customers (for example: via a direct message from Slackbot) that their app version, browser, or OS will no longer be supported.
  • There will be a one-month grace period between when an app version, browser, or OS reaches end of support (when it is no longer supported) and end of life (when it is deprecated completely). You will still be able to access Slack, but we will not fix issues or make any updates.
  • Slack pages accessed from a browser, including authentication and administration pages, will follow our browser deprecation policy. Customers using deprecated browser versions will be blocked from signing in, creating new workspaces, and managing settings for their workspace or Enterprise Grid org.

Note: For a list of Slack's upcoming and past deprecations, visit Slack's deprecation schedule.


Support cycles

Slack supports app versions, browsers, and OS for different periods of time, taking into account development cycles and our customers' needs:

Version, browser, or operating system Length of support
Slack desktop and mobile apps 12-18 months from release
Browsers 12-18 months from release
Windows, Mac, and Linux At least 6 months from the time the manufacturer stops OS support
iOS 2.5-3 years from release
Android 4.5-5 years from release


Deprecation timeline

When an app version, browser, or OS reaches its end of support date, Slack will begin the deprecation process:

  • Six months, three months, and one week before ending support, Slack will let customers know that their app version, browser, or OS will no longer be supported and prompt them to update.
  • When an app version, browser, or OS reaches end of support, members can continue using unsupported app versions, browsers, and OS during a one-month grace period, leading up to the official end of life (EOL) date.
  • One week before EOL, Slack will send a final notice to anyone still using the unsupported app version, browser, or OS with a prompt to update.
  • Once an app version, browser, or mobile OS reaches EOL, Slack will remove the affected app versions from app stores and shut down any supporting services, and may block app usage.

Graphic showing the timeline of a version, browser, or OS to be deprecated in August

Note: When a Windows, Mac, or Linux OS reaches EOS, anyone using that OS will not be blocked from accessing Slack.