Slack experienced a minor incident on February 6, 2026 affecting Workflows, lasting 8h 53m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Feb 06, 2026, 11:16 AM UTC
We're aware of an issue affecting scheduled workflows that include a Send a message step. Users may experience authentication errors preventing these workflows from executing as expected. Other workflow types, such as link trigger workflows, don't appear to be affected at this time. We’re actively investigating, and will update as soon as we know more.
- investigating Feb 06, 2026, 01:08 PM UTC
We’ve identified a likely cause and a fix is in progress. We’ll update once it's deployed and we can confirm that scheduled workflows that include a Send a message step are fully operational again. We appreciate your patience while we work to resolve this.
- monitoring Feb 06, 2026, 03:51 PM UTC
The fix has been deployed and we’re monitoring to see if scheduled workflows that include a Send a message step are now operating successfully. We’ll update as soon as we know more.
- resolved Feb 06, 2026, 08:10 PM UTC
We've validated that the fix was successful, and the authentication errors users were experiencing with scheduled workflows are now resolved. We apologize for any disruptions to your day and appreciate your patience as we sorted this out.