Slack tweeted on Monday morning that “Customers may experience issues connecting to Slack to loading channels at this time. Our team is on the case and we will keep you posted. Apologies for any disruption.”
Customers may have trouble connecting or using Slack
There are no changes to report as of yet. We’re still all hands on deck and continuing to dig in on our side. We’ll continue to share updates every 30 minutes until the incident has been downgraded. – Jan 4, 10:22 PM GMT+5:30
Slack Service Current Status as Outage for Login/SSO, Connections, Messaging, Link Previews, Posts/Files, Notifications, Calls, Search, Apps/Integrations/APIs, Workspace/Org Administration.
The outage began around 10 a.m. Eastern time and disrupted service in the U.S., Germany, India, the U.K., Japan and elsewhere. Slack said that people should check https://status.slack.com for updates.
Workplace collaboration service Slack is down globally. Tracking website Down Detector showed a spike in reports of problems with the messaging app, has reported over 15,000 user complaints on January 4.
Ref: https://www.technologysumo.com/slack-is-down-globally-on-the-first-work-day-of-2021/
