On August 19, 2019, we became aware that Google was investigating an issue with authentication. During this time, some users were unable to sign in to Slack using their Google credentials. At 12:30 p.m. PDT, Google resolved the issue for all users.
5:32 PM PST
All customers should be able to sign into Slack through Google once again. We appreciate you standing by in the meantime, and apologize for any disruption caused here.
1:40 PM PST
Some people are having trouble authenticating with Google. We're tracking this issue and will be back with more updates once we have more news. Thanks for hanging tight in the meantime.
12:53 PM PST