| 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): | The Active Directory certificate services were not started: The string for the validity period of the certificate date in the registry entry HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CertSvc\Configuration\%1\ValidityPeriod 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
Do you know TameMyCerts? TameMyCerts is an add-on for the Microsoft certification authority (Active Directory Certificate Services). It extends the function of the certification authority and enables the Application of regulationsto realize the secure automation of certificate issuance. TameMyCerts is unique in the Microsoft ecosystem, has already proven itself in countless companies around the world and is available under a free license. It can downloaded via GitHub and can be used free of charge. Professional maintenance is also offered.
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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