Slack: Users May Not Receive Notifications on Slack Thread Replies
Affected components: Notifications
Timeline of updates
- update
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
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
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.
Archive proof
Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert. That proves this record existed by then and has not been changed since, by anyone, Rewindex included.
How the archive is checked, and what it cannot prove.
First version captured
In the 2026-10-19 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
000494c75944a1e3…
Impact, status and times are the vendor’s own, as last archived. View on slack-status.com (opens in new tab).
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).
- Title
- Users May Not Receive Notifications on Slack Thread Replies
- Vendor
- Slack
- Date
- URL
- https://rewindex.com/company/slack/incidents/1547
Slack profileRecent Slack incidentsAll outages on April 27, 2026Slack in April 2026MarkdownJSON