Workday went dark right after the closing bell. The stock hasn't fully priced it yet. 🔌

On Friday evening (US time), the HR and payroll platform put customer systems into maintenance. Workers at affected employers couldn't clock in, check pay or finish benefits enrollment.

The cause, per Workday's customer notice: a weekly disaster-recovery test unexpectedly connected to live production databases and left data inconsistent. No cyberattack. No restoration time announced as of Saturday morning ET.

Market link: $WDAY closed Friday at $196.45 (+3.1%) before the outage. After-hours it slipped to $195.35 (-0.6%) (Yahoo Finance). Monday's open is the first real test.

Workday serves 11,500+ organizations, but it has only said "some" customers were hit.

Brief glitch, or a real trust problem for enterprise software?