Is Slack down? User errors point to outage at the messaging app.

The popular messaging app experienced problems on Monday, Nov. 10.
 By 
Timothy Beck Werth
 on 
close-up of thumb hitting slack icon on phone screen
Credit: Matthias Balk/picture alliance via Getty Images

UPDATE Monday, 2:51 p.m. ET: Slack's problems on Monday appear to be resolving. User-reported issues on Downdetector had fallen precipitously from their earlier peak.

Slack's status page indicates that it has identified and begun fixing the issue. "Our work on this issue is still ongoing, and our health metrics continue to indicate improvement," reads its most recent update.


Thousands of people reported errors connecting to Slack around 1 p.m. ET on Monday, Nov. 10. Slack is a popular message platform in the corporate world, and the outage caused big problems for users starting their workweek.


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Like many news outlets, Mashable reporters use Slack to communicate, and multiple members of the Mashable team reported receiving errors when trying to send new messages on Monday.

User error reports for Slack spiked on Monday afternoon on the platform Downdetector, with more than 15,000 incidents reported in just minutes. The initial spike started around 12:56 p.m. ET. (Disclosure: Downdetector and Mashable are both owned by the company Ziff Davis.)

According to a Slack status page, the company was investigating a "new incident."

At 1:26 p.m. ET, the company posted the following message: "Some users may have trouble connecting to or loading Slack. We'll provide an update within 30 minutes, including further details on current actions being taken."

As of this writing, Mashable reporters are able to connect to Slack, suggesting the outage may already be over for many users.

This is a developing story, and we'll provide updates as new information becomes available.

headshot of timothy beck werth, a handsome journalist with great hair
Timothy Beck Werth
Tech Editor

Timothy Beck Werth is the Tech Editor at Mashable, where he leads coverage and assignments for the Tech and Shopping verticals. Tim has over 15 years of experience as a journalist and editor, and he has particular experience covering and testing consumer technology, smart home gadgets, and men’s grooming and style products. Previously, he was the Managing Editor and then Site Director of SPY.com, a men's product review and lifestyle website. As a writer for GQ, he covered everything from bull-riding competitions to the best Legos for adults, and he’s also contributed to publications such as The Daily Beast, Gear Patrol, and The Awl.

Tim studied print journalism at the University of Southern California. He currently splits his time between Brooklyn, NY and Charleston, SC. He's currently working on his second novel, a science-fiction book.

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