Tuesday April 9, 2024

Issue summary:
On April 8, 2024 from 2:32 PM PDT to 3:27 PM PDT, some users were unable to sign in, connect to Slack, access threads, run workflows, join huddles, or perform other activities. Apps and integrations may also have been impacted.

One of our databases failed and our automated recovery systems were not able to remedy the situation, requiring manual intervention. Our manual intervention restored normal functionality for most features, but it was not fully successful. There were some remaining issues with workflows that required further data recovery steps.

During this additional remediation work, we inadvertently caused a brief connectivity issue, preventing users from connecting to Slack for a very short period on April 9, 2024 at around 10:05 PM PDT. At 10:18 PM PDT our automated recovery systems successfully rectified the issue, ending connectivity problems for all customers.

We resumed our remediation work and concluded our data recovery efforts, resolving all remaining workflow issues. Additionally, this work included measures to prevent the same database failure from reoccurring in future.

11:43 PM PST

We had all hands on deck over here, and everyone should now be able to connect to Slack as normal once more.

We apologize for the disruption to your day.

10:32 PM PST

Some customers may be experiencing issues connecting to Slack or accessing some features such as threads and workflows. We are working to resolve this as fast as we can.

10:18 PM PST

Issue Summary:

From Tuesday April 9 at 12:17 AM PDT to 7:21 AM PDT, users reported being unable to load the Workflow Builder page in Slack.

We noticed an elevated error rate for API requests related to this page, and determined this was caused by a database issue that was in the process of being remediated. As remediation work continued, error rates subsided and the Workflow Builder page began to load as normal.

8:45 AM PST

We've resolved the issue with the Workflow Builder, and Slack is back to full functionality. Thank you very much for your patience while we worked on getting this fix out the door.

If you're still experiencing trouble, please reach out to feedback@slack.com.

8:15 AM PST

We’re still actively investigating this issue, but we don’t have any new information to share at this time. Thanks for sticking with us as we continue to work towards a fix.

6:40 AM PST

We've received a small number of reports that the Workflow Builder page is not loading for users on both the desktop application and a number of web browsers.

We're investigating this issue and are working to understand the situation further. We'll let you know as soon as we have more details to share.

5:48 AM PST