Monday September 14, 2020


Users unable to connect to Slack

Issue summary:
On September 14, 2020 around 5:00 a.m. PDT, we received reports that some users in Europe experienced connection timeouts and had trouble loading Slack.

We carried out an investigation and observed trends with ISPs throughout Europe, but found no evidence of an issue on our side. While we took no direct remedial action, before 7:00 a.m. PDT, we saw connection errors return to expected levels and received confirmation from some users that they could load Slack again.

10:57 AM PST

We've confirmed that users should now be able to connect to Slack again. Should you experience any further issues, we recommend reaching out to your ISP. Thank you for your patience as we investigated the issue.

7:22 AM PST

We believe the connectivity trouble users are facing is the result of an upstream issue with some Internet Service Providers (ISP). We would recommend that those impacted reach out to their ISP for troubleshooting.

6:56 AM PST

Some users are experiencing issues connecting to Slack. We're currently investigating, and we'll share more information as soon as it becomes available. Apologies for the inconvenience.

6:07 AM PST

Services affected