The Daily Tech Wireby Nuffield Consulting

Home / Incidents / Outage

majorOutage26 February 2025

Slack messaging degraded for about nine hours

Slack users could not reliably send or load messages for around nine hours after a maintenance action on its database systems went wrong.

Service
Slack
Date
26 February 2025
Cause
Software bug
Duration
9 hours
Status
resolved
Severity
major
Region
Global
Source
Network World ↗

Cite this

Nuffield Consulting, “Slack messaging degraded for about nine hours”, The Daily Tech Wire outage & breach log, 26 Feb 2025. https://techwire.nuffieldconsulting.com/incidents/2025-02-26-slack-outage/ (retrieved 15 Nov 2026).

This entry summarises public reporting. Please also cite the original source: Network World, https://networkworld.com/article/4124642/top-11-network-outages-and-application-failures-of-2025.html.

Related incidents

February 2025 in numbers → · All 468 incidents →