Short answer
Check which Slack desktop versions your team uses. If any are 4.47.59 or earlier, assign an owner to test and complete an update before November 9, 2026, so an old installation does not interrupt access.
What changed
Slack lists desktop app versions 4.47.59 and earlier for end of support on November 9, 2026. Slack says unsupported app versions cannot access the service until upgraded.
Affected product, plan, or suite
Slack desktop app versions 4.47.59 and earlier.
Date and timing
2026-11-09
Why now
This is an upcoming deadline in a standing support schedule, not a newly dated announcement. The announcement date was not established. Source checked September 9, 2026.
Who should care
The software or device owner in a small team with older or centrally managed Slack desktop installations.
Why it matters
An old installation can interrupt collaboration even when the subscription itself is current. Assign an owner and test the update before access becomes urgent.
What this does not change
Operating-system support is a separate check. Slack says a supported app may retain access on an unsupported desktop OS, but app updates and store downloads are unavailable. This notice does not establish a subscription price change.
Worthd take
Put support cutoffs next to renewal and notice dates. Before cutting a cost or changing a subscription, confirm that the team can keep doing its work.
What to check next
- Identify affected desktop installations.
- Check current app and operating-system compatibility.
- Test a supported release with a representative workflow.
- Assign the rollout and confirm completion before November 9.
Published and sources checked September 9, 2026. Confirm current contract terms and vendor documentation before acting. How Worthd works.