Friday October 4, 2019


Calls not working for Windows users running desktop app 4.1

Issue Summary:

On September 25, 2019 at 5:00 p.m. PDT, an unexpected error was introduced that affected the size of the Calls window. During this time, customers were unable to access the buttons to answer an incoming call. We launched an investigation and found the error. The Calls window was fully working again by October 4, 2019 at 6:58 p.m. PDT.

If you’re still encountering any trouble, please let us know at

12:52 AM PST

We’ve rolled out a fix for the issues with Slack Calls. For those affected, please refresh your Slack app twice by pressing Ctrl+R to see those changes. If you continue to see troubles with this, please contact us through

7:33 PM PST

We’re still investigating issues with Slack Calls for Windows desktop app 4.1. As a workaround, Calls should work on the Chrome browser. Thanks for bearing with us.

4:35 PM PST

Windows users running version 4.1 of the desktop app are still having trouble with Slack Calls. We’re focused on getting things back to normal as quickly as we can. We’re sorry for the interruption.

4:05 PM PST

Windows users are having trouble with Slack Calls on version 4.1 of the desktop app and Chrome. We're currently investigating, and we'll keep you posted as soon as we have more information. We're sorry for the disruption.

3:35 PM PST

Some people may be having an issue with Slack. We’re currently investigating and will have more information shortly. Thank you for your patience.

3:28 PM PST

Services affected