Wednesday August 22, 2018


Trouble with search

Technical Summary:
At 6:19pmPT on August 22, 2018 a change was deployed that caused Search to fail for all customers when they reloaded Slack on desktop or in a browser. This change was part of a larger effort we are taking to modernize and improve Slack performance.

The regression was identified at 6:35pmPT and reverting the change restored search functionality for all customers by 8:29pmPT. We have planned to add additional logging and testing activities to prevent this from happening in the future.

3:58 PM PST

We've deployed a fix to resolve the search issues. If you're still seeing failures, please reload Slack with Cmd/Ctrl + R, or reach out to us at Thank you for your patience, we're very grateful.

8:29 PM PST

We are still investigating the search trouble and working to determine the underlying issue.

8:14 PM PST

Searches in Slack may be failing for some users. We are all on hands on deck and looking in to this. We apologize for the trouble.

6:19 PM PST

Services affected





Issues with editing snippets

Technical Summary:
On the 22nd of August at 2:46pm (PT) we received some user reports of snippets appearing blank when opened for editing. Our investigation revealed that this was caused by some updates to file and snippet code earlier in the day. We deployed a fix and normal editing functionality was restored at 6:20pm (PT).

We reverted the original snippet fix in order to address a concurrent issue with our search feature. We deployed a second fix shortly after, and snippet editing returned to normal at 9:04pm (PT).

We are now working on improvements to ensure this doesn’t happen in the future. If you are experiencing any further troubles please reach out to us at

9:33 PM PST

We have deployed a fix for the snippet editing trouble. If you're still experiencing issues, please reload Slack with Cmd/Ctrl + R. Apologies for the inconvenience.

9:04 PM PST

We're terribly sorry — we've discovered further trouble with snippets and we're working to get this sorted out as soon as we can.

8:55 PM PST

We've resolved the trouble, and editing your snippets should be nice and smooth once more. Please reload Slack with Cmd/Ctrl + R to see the change. Thank you for bearing with us.

6:20 PM PST

We are investigating an issue where snippets appear blank when opened for editing. We're very sorry for the disruption.

2:46 PM PST

Services affected





New Threads not showing up in the channel list on Enterprise Grid

Technical Summary:
On August 22nd at 06:48 AM (PT) we deployed a change for fetching threads that logged data in an undesired format. Addressing the formatting error caused notification failures for some customers when new threads were updated. We reverted the change and thread notifications were restored at 07:57 AM (PT). We are now working on testing and logging improvements to ensure this doesn’t happen in the future.

5:18 PM PST

Thread replies are now correctly highlighting the sidebar again. Our team found the root cause and solved the problem. Thanks for your patience and sorry for the bump in the road.

7:57 AM PST

We're still investigating the problem with the channel list not updating when new thread replies come in on Enterprise Grid. Apologies for the hassle.

7:46 AM PST

We've received reports of New Threads not showing up in the channel sidebar on Enterprise Grid workspaces. We're sorry about the confusion and our team is working on a fix.

6:48 AM PST

Services affected