Troubleshooting steps
Check user permissions, verify security settings, review access logs
SCADA System Alarms
WinCC W27 – Security violation
Security violation
Details
WinCC W27 error on SCADA indicates security violation. Unauthorized access attempt, permission denied, security policy violation. Check user permissions, verify security settings, review access logs.
Error typesecurity
MeaningSecurity violation
Typical causesUnauthorized access attempt, permission denied, security policy violation
SolutionsCheck user permissions, verify security settings, review access logs
SeverityCritical
Catalog references
Where this appears
WinCCW27
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Common questions
What does W27 mean on WinCC SCADA?
W27 on WinCC SCADA indicates security violation. Unauthorized access attempt, permission denied, security policy violation.
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