Thursday August 16, 2018

Technical Summary:
On August 16th, 2018 between 9:19 am PDT and 9:37 am PDT, Slack experienced an 18 minute outage, where all users could not use the Slack product.

A configuration change at 9:19 am PDT prevented our web infrastructure from communicating with a subset of our database infrastructure. This resulted in a complete loss of Slack functionality until the change was reverted at 9:37 am PDT. We called the all clear at 11:07 am PDT.

We are currently hard at work on scoping preventive measures to ensure this doesn't happen in the future.

4:48 PM PST

Thanks for your patience and understanding while we worked to resolve the connection problems. Everyone should now be able to connect once again, but please let us know if you run into any further problems at feedback@slack.com.

11:07 AM PST

While some folks are able to connect successfully once again, we're not out of the woods just yet. We hope to have some good news for you soon.

10:20 AM PST

We're still working to ensure this is fully resolved, however folks may be seeing improvements at this time. Thanks for bearing with us.

9:37 AM PST

We're investigating connectivity issues impacting all workspaces. Our team is on the case, and we are very sorry for the disruption.

9:19 AM PST