Slack Outage History

Slack users experienced problems with the Later tab in the desktop app and the Slack web browser, including difficulty switching from In Progress to Archived or Completed and some items missing from Archived or Completed. The impact was focused on the Messaging workflow and did not indicate a broader outage across Slack services.

Slack acknowledged the issue at May 5, 2025 5:04 PM UTC and the status returned to normal at May 5, 2025 8:14 PM UTC, with Slack issuing 2 status updates during the incident.

Slack experienced a brief incident in Workspace/Org Administration that prevented users from taking actions on the Manage Members page within Workspace Settings and Permissions. The incident began at 8:19 PM UTC and was resolved by 8:49 PM UTC, lasting about 30 minutes, during which Slack posted two status updates describing the problem and its resolution. The impact was limited to member-management actions in the Workspace Admin tools, with no wider Slack services affected.

Slack users relying on the Zoom integration experienced connectivity issues, with some unable to connect or use the integration and receiving error messages. The issue affected the Apps/Integrations/APIs component within Slack and caused a partial disruption to workflows that depend on Zoom. The incident lasted about 1 hour 20 minutes, beginning at 7:49 PM UTC and ending at 9:09 PM UTC.

Slack communicated the incident through its status page, first noting issues with the Zoom Slack integration and advising that some users may see errors, and later confirming that the issue had been resolved and services had returned to normal. The provider issued 2 status updates during the incident at Apr 16, 2025 7:49 PM UTC and Apr 16, 2025 9:09 PM UTC.

Slack experienced a partial outage affecting loading of images, icons, files, and other media on slack.com pages and the Slack app, including admin sections. As a result, media assets could fail to render, degrading user experience and complicating tasks that rely on media.

The outage began on Apr 14, 2025 8:49 PM UTC and was resolved by Apr 14, 2025 10:49 PM UTC, lasting about 2 hours. Slack stated they were investigating the issue on their status page and provided updates as they worked to restore normal service. The incident involved two components — Workspace/Org Administration and Connectivity — which showed degraded status during the event before returning to normal.

Slack reported a brief degradation affecting the Login/SSO component. The issue began on 4:09 PM UTC and was resolved by 5:19 PM UTC, lasting about 1 hour and 10 minutes. Slack posted updates as the Login/SSO component transitioned from degraded to up, with a final restoration indicated in the second update. The incident indicates authentication services experienced a short-lived disruption, after which normal operation resumed.

Slack experienced issues with login confirmation emails not reliably reaching users, with some messages landing in junk folders or not arriving at all. The Login/SSO component was affected, impacting sign-in and account verification for a subset of users. The incident began on Mar 28, 2025 2:29 AM UTC and was resolved by Apr 3, 2025 4:59 PM UTC. During this period, Slack issued two official status updates explaining the issue and guidance.

Slack advised affected users to add @slack.com and @slack-mail.com to trusted senders to improve delivery. Reports from users were limited, including at least one observation from St. Petersburg, indicating the issue did not appear to be globally widespread.

Slack experienced a short-lived issue affecting some iOS users where channels and messages would not load. The incident began on Mar 20, 2025 5:34 PM UTC and was resolved by Mar 20, 2025 8:19 PM UTC, lasting about 2 hours and 45 minutes. The Slack status page listed Connectivity as degraded during the event and showed ongoing investigation with updates as information became available. The issue appeared to be limited to a subset of iOS users and has since been resolved following the two official updates from Slack.

The incident affected Slack's Workspace/Org Administration component, causing degraded admin-related functionality for roughly 40 minutes. The outage began at 4:59 PM UTC and was resolved by 5:39 PM UTC. The Slack status page posted two updates during the incident, indicating the issue and its subsequent resolution.

Slack experienced a temporary connectivity degradation that affected messaging for a portion of the service. The incident began on 9:25 PM UTC and was resolved by 12:24 AM UTC, lasting roughly 2 hours and 59 minutes. Slack flagged the issue on the Connectivity component and issued two status updates during the incident to communicate the ongoing impact and resolution. Users may have experienced intermittent messaging and latency as connectivity fluctuated before services returned to normal.

Slack reported search problems that prevented queries from returning results for about 45 minutes, affecting the ability to locate messages. The incident impacted 2 components: Search and Workspace/Org Administration. The issue began at 8:09 PM UTC and was restored by 8:54 PM UTC.