Users may experience delays due to increased load on bychan keyspace affecting system performance

Update timeline

1. monitoring Apr 20, 2026, 09:05 AM UTC

   This issue is now resolved for all users. Current status and recent actions taken: We've completed rolling back the change to address the issue impacting core Slack functionality, including launching Slack, sending messages, loading threads, and other related actions. Scope: All Slack enterprise customers. Previous impact to end users: Users experienced issues with channel-related operations, including delays or failures when loading channels or retrieving channel membership lists. We apologize for any disruptions to your day.