# Slack: Users May Not Receive Notifications on Slack Thread Replies

> Slack status incident “Users May Not Receive Notifications on Slack Thread Replies” on 2026-04-27: impact minor (vendor’s label), 3.4 h, 3 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/slack/incidents/1547
Last updated: 2026-04-27T20:36:02Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-04-27 17:11 UTC · Resolved: 2026-04-27 20:36 UTC · Duration: 3.4 h
- Updates: 3 · Affected components: Notifications
- [Vendor status page: https://slack-status.com/2026-04/22195f9f2ca47237](https://slack-status.com/2026-04/22195f9f2ca47237)
- [Company: Slack](https://rewindex.com/company/slack.md)

## Timeline of updates

- **update** 2026-04-27 17:11 UTC: Some users have reported issues with thread replies not generating a notification banner. We’re investigating the issue, and have identified a recent deployment as a possible trigger. We apologize for the inconvenience and will report back as more information becomes available.
- **update** 2026-04-27 18:07 UTC: We’re observing positive signals after rolling back the deployment in test environments. We will complete some final validations before rolling back the deployment in the production environment. Thank you for your patience as we work through this one. We’ll report back once production rollback is completed or if there are substantial updates to share.
- **resolved** 2026-04-27 20:36 UTC: We’ve successfully performed a rollback in the production environment, and all systems are now functioning as expected. Users should no longer experience any issues with thread replies not generating a notification banner. We apologize for any inconvenience and appreciate your patience.

## Cite this

Status incident (vendor impact label: minor) posted by Slack, started 2026-04-27 17:11 UTC, resolved after 3.4 h, 3 update(s).

- Canonical URL: https://rewindex.com/company/slack/incidents/1547
- Citation: Slack, “Users May Not Receive Notifications on Slack Thread Replies” (2026-04-27 17:11 UTC). Archived by Rewindex: https://rewindex.com/company/slack/incidents/1547 (CC BY 4.0).
- Markdown link: `[Slack: Users May Not Receive Notifications on Slack Thread Replies (2026-04-27)](https://rewindex.com/company/slack/incidents/1547)`


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Canonical: https://rewindex.com/company/slack/incidents/1547 · Markdown: https://rewindex.com/company/slack/incidents/1547.md · JSON: https://rewindex.com/api/v1/companies/slack/incidents/1547 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T15:56:31.197Z