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Story summary
- Slack experienced a major service disruption on November 10, 2025, affecting many United States users as employees returned to work.
- The issue was labeled an incident at first and later classified as an outage, with users reporting difficulties loading channels.
- By 3:10 p.m., Slack acknowledged the disruption and said improvements were underway, while calendar app and email notification issues were resolved but the total impact and cause were not disclosed.
