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Outage in Slack

Trouble with Slack - General Slack functionality issues

Resolved Minor
May 27, 2026 - Started 2 days ago - Lasted about 16 hours
Official incident page

Incident Report

Summary AI Generated

Slack experienced a 16.4-hour service incident affecting workflows, messaging, apps/integrations/APIs, and canvases, with users unable to edit messages, rename channels, create channels, manage permissions, update statuses, or save canvas edits. The incident involved two phases: an initial disruption affecting core functionality like workflows and messaging that was largely resolved after several hours, followed by a secondary issue causing persistent permissions-related problems and canvas editing failures. Resolution required multiple configuration adjustments and deployments over an extended period to fully restore all affected services.

We're investigating a new incident.

  • Current impact to end users: We’re aware of an issue affecting workflows, message edits, channel renames, apps, and channel creations.

We'll provide an update within 30 minutes including further details on current actions being taken.

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Latest Updates ( sorted recent to last )
1 day ago - at 05/28/2026 02:09PM

Slack users continue to experience permissions-related issues such as: unable to manage channels, add Canvas to tabs, update statuses, convert public to private channels while we work on a complete restoration. 
We’ll provide an update in the next 30 minutes or sooner, if additional information becomes available. 

1 day ago - at 05/28/2026 01:35PM

Remediation efforts via configuration adjustments and deployment will take several hours to complete to fully resolve channel management and status issues. Slack users may continue to experience intermittent impact. 
We'll be back with another update in 30 minutes when we have news to share.

1 day ago - at 05/28/2026 12:55PM

Remediation efforts via configuration adjustments and deployment are in progress. Users may still run into issues updating their status and managing channels. 
We’ll provide another update in 30 minutes or as soon as we have more information, and again we are sorry for the inconvenience this is causing.

1 day ago - at 05/28/2026 12:25PM

Recovery activities continue, and restoration efforts are progressing well. Slack users should now be able to edit Canvases as the errors have dropped. 
We’ll provide an update in the next 30 minutes or sooner, if additional information becomes available. 

1 day ago - at 05/28/2026 12:01PM

Our work on this issue is still ongoing.
Current status and actions being taken: Remediation efforts are underway via configuration adjustments and deployment. We're still working to resolve the issues with Canvas.
We'll be back with another update once we have news to share.

1 day ago - at 05/28/2026 11:46AM

We continue to investigate the issue, and are‌ gathering the resources necessary to restore services. 
We’ll provide another update in 30 minutes or as soon as we have more information, and again we're sorry for the inconvenience this is causing.

1 day ago - at 05/28/2026 11:17AM

Users continue to experience issues with their ability to manage channels, Canvas edits not saving, and user statuses not clearing or updating correctly. Investigations are underway. 
We're working with urgency to improve platform stability and reduce impact. We’ll provide an update in the next 30 minutes or sooner, if additional information becomes available. 

1 day ago - at 05/28/2026 10:45AM

We continue to investigate the issue and are working with urgency to improve stability and reduce impact.
We’ll provide another in 30 minutes or sooner, including further details on current actions being taken. We're sorry for the inconvenience this is causing.

1 day ago - at 05/28/2026 10:04AM

We're investigating a new impact to Slack. 
Current impact to end users: Slack users are experiencing issues with managing channels, statuses aren't clearing or updating correctly, and edits on Canvas aren't being saved.   
We'll provide an update within 30 minutes including further details on current actions being taken.

1 day ago - at 05/28/2026 05:47AM

Slack services have largely returned to normal operational levels. Messaging, Workflows, Apps, Integrations, APIs, and Connections have all been restored.
We'll continue with the final restoration activities and we'll provide updates as significant developments occur.

1 day ago - at 05/28/2026 05:13AM

Slack services continue to progress through the final stages of ‌recovery activities to restore functionality across all services.
We’ll provide an update in the next 30 minutes or sooner, if additional information becomes available.

1 day ago - at 05/28/2026 04:30AM

Recovery activities continue, and restoration efforts are progressing well. Platform stability is improving, and no further customer impact is expected. 
We’ll provide an update in the next 60 minutes or sooner, if additional information becomes available.

1 day ago - at 05/28/2026 03:55AM

We’re glad to inform you that the Workflow Builder job backlogs were cleared and workflow execution has returned to normal. We continue progressing through the final stages of recovery activities across affected service areas as overall platform stability improves.
We’ll provide an update in the next 30 minutes or sooner, if additional information becomes available.

2 days ago - at 05/28/2026 03:22AM

Cleanup and recovery efforts continue. Workflow builder job backlogs are being drained. Event subscriptions have been re-enabled. No further impact is expected. We’ll provide an update in the next 30 minutes or sooner, if additional information becomes available.

2 days ago - at 05/28/2026 02:46AM

Workflow builder jobs that were triggered during the disruption period have been replayed and will complete over the next several hours. We’ll provide an update in the next 30 minutes or sooner, if additional information becomes available. 

2 days ago - at 05/28/2026 02:17AM

Messaging latency has now cleared. Newly triggered workflows should start and complete as normal. Workflows that executed during the impact period ending at approximately 7pm PDT may not have completed. Customers may notice delayed workflow execution for jobs that triggered during the disruption period. We’ll provide an update in the next 30 minutes or sooner, if additional information becomes available. 

2 days ago - at 05/28/2026 01:41AM

We are continuing to work on implementing fixes to fully resolve the issue. Messaging should now be recovered. Users may continue to experience issues with workflow steps completing. Empty pills instead of @-mention; delayed reacji; mismatch in Channel member count and channel membership; and slow loading of messages, user avatars, and unfurls should now all be working properly. We’ll provide an update in the next 30 minutes or sooner, if additional information becomes available.

2 days ago - at 05/28/2026 01:03AM

Teams continue to implement configuration adjustments and deployment fixes to resolve the issue. All features except for Workflows and Messaging should be recovered. Some lingering impact remains. Users may notice:Empty pills instead of @-mentionDelayed reacjiMismatch in Channel member count and channel membershipSlow loading of messages, user avatars, and unfurlsWe are working with urgency to improve platform stability and reduce impact. We’ll provide an update in the next 30 minutes or sooner, if additional information becomes available.

2 days ago - at 05/27/2026 11:31PM

We continue to investigate the issue, and are‌ implementing fixes to restore services. We're starting to see some improvements from the fixes implemented so far. We’ll provide another update as soon as we have more information, and again we are sorry for the inconvenience this is causing. 

2 days ago - at 05/27/2026 11:00PM

We're investigating a new incident.Current impact to end users:  We’re aware of an issue affecting workflows, message edits, channel renames, apps, and channel creations.We'll provide an update within 30 minutes including further details on current actions being taken.

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