of human-error outages involved staff not following procedures or flaws in the procedures themselves (the two categories overlap)
~85%observed
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| Scope | process-failure share of human error |
| Caveat | Uptime's 2022 and 2025 outage-analysis releases use the same wording, so this is a long-running finding, not a fresh 2025 measurement. Uptime pairs better procedures with staff training and real-time operational support. Its 2026 release (13 May 2026) again names failure to follow established procedures as the leading human-error driver. |
| As of | 2025 |
| Source | Uptime Institute Annual Outage Analysis 2025 |
| Review | checking…review by 2027-05-01 · standard cadence |
| Recorded changes | last 2026-06-29 |
| Claim id | of-human-error-outages-stem-from-staff-not |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.