Monday October 22 - Tuesday October 23, 2018

Incident

Slack is experiencing degraded service

Technical Summary:

At 12:28pm (PT) on October 22, 2018, a change was deployed that caused the hosts responsible for notifications, link unfurls and other tasks to fail. As this change propagated out, customers began experiencing degraded service in the form of late notifications and elevated API response times. After identifying the issue, we updated the affected hosts at 1:13pm (PT), allowing the system to recover and begin processing these tasks again normally. Service was fully restored by 2:40pm (PT).

4:33 PM PDT - Oct 23rd・See in your timezone

We’re happy to report that the delays in services have been fixed. We’re sorry for the trouble, and thanks for sticking with us.

3:00 PM PDT - Oct 22nd・See in your timezone

We’re happy to report that the delays in services have been fixed. We’re sorry for the trouble, and thanks for sticking with us.

2:59 PM PDT - Oct 22nd・See in your timezone

We're seeing a return to normal service but some actions are still being delayed. We'll update you when we're back in business.

2:30 PM PDT - Oct 22nd・See in your timezone

Nothing new to share just yet, but we're working to get things back to normal as soon as possible. Again, we truly appreciate your patience.

2:00 PM PDT - Oct 22nd・See in your timezone

We're still trying to pin down the root cause of the notifications issue. We've heard reports of other features being affected so we're looking into those reports. We appreciate your patience.

1:30 PM PDT - Oct 22nd・See in your timezone

Some users aren't receiving notifications.

1:00 PM PDT - Oct 22nd・See in your timezone

Services affected

Apps/Integrations/APIs

Connections

Messaging

Link Previews

Posts/Files

Notifications

Status

Resolved