| Event Source: | Microsoft-Windows-CertificationAuthority |
| Event ID: | 20 (0x14) |
| Event log: | Application |
| Event type: | Error |
| Symbolic Name: | MSG_E_REG_BAD_CERT_PERIOD |
| Event text (English): | Active Directory Certificate Services did not start: The Certificate Date Validity Period string in the registry value HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CertSvc\Configuration\%1\ValidityPeriod is invalid. Valid strings are "Seconds", "Minutes", "Hours", "Days", "Weeks", "Months" and "Years". |
| Event text (German): | Active Directory certificate services were not started: The certificate date validity period string in the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CertSvc\Configuration\%1\ValidityPeriod registry entry is invalid. Valid strings are "seconds", "minutes", "hours", "days", "weeks", "months" and "years". |
Parameter
The parameters contained in the event text are filled with the following fields:
- %1: CACommonName (win:UnicodeString)
Description
No description has been written for this yet.
Safety assessment
The security assessment is based on the three dimensions of confidentiality, integrity and availability.
No description has been written for this yet.
Microsoft rating
Microsoft evaluates this event in the Securing Public Key Infrastructure (PKI) Whitepaper with a severity score of "Low".
Related links:
- Overview of Windows events generated by the certification authority
- Overview of audit events generated by the Certification Authority
External sources
- Event ID 20 - AD CS Registry Settings (Microsoft)
- Securing Public Key Infrastructure (PKI) (Microsoft)
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