Outage in Cornerstone
vILT Integrations Error in UK PRD & PIL
Resolved MajorIncident Report
Summary AI Generated
A major incident affecting Cornerstone's vILT Microsoft Teams integration in the UK PRD and PIL environments prevented users from creating virtual instructor-led training sessions, throwing a System.ArgumentException error. The root cause was identified during the incident. The issue was resolved within 47 minutes.
Error when creating vILT session (Microsoft Teams VILT Integration): "Error while creating Schedule: Exception of type 'System.ArgumentException' was thrown."
Cause has been found and we are working on the fix.
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Latest Updates ( sorted recent to last )
RESOLVED
14 days ago - at 08/20/2026 12:51PM
This incident has been resolved.
IDENTIFIED
14 days ago - at 08/20/2026 12:06PM
Error when creating vILT session (Microsoft Teams VILT Integration): "Error while creating Schedule: Exception of type 'System.ArgumentException' was thrown."
Cause has been found and we are working on the fix.
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