Your Application event log contains:

<b>Event Type: Information
Event Source: CertSvc
Event Category: None
Event ID: 42
Date: date
Time: time
User: N/A
Computer: Servername
Description: Certificate Services did not start: Could not build CA certificate chain xxxx.
             A certificate chain processed correctly, but terminated in a root certificate
             which is not trusted by the trust provider. 0x800b0109 (-2146762487).


Event Type: Information
Event Source: CertSvc
Event Category: None
Event ID: 58
Date: date
Time: time
User: N/A
Computer: Servername
Description: Certificate Services did not start: A certificate in the CA certificate chain
            for xxxx has expired. A required certificate is not within its validity period
            when verifying against the current system clock or the timestamp in the signed
            file. 0x800b0101 (-2146762495).

Event Type: Warning
Event Source: CertSvc
Event Category: None
Event ID: 51
Date: date
Time: time
User: N/A
Computer: Servername
Description: Certificate Services did not start: A certificate in the CA certificate chain
             for xxxx has been revoked. 0x800B010C (-2146762484).

Event Type: Information
Event Source: CertSvc
Event Category: None
Event ID: 26
Date: date
Time: time
User: N/A
Computer: Servername
Description: Certificate Services for xxxx was started.</b>
Starting with SP4, events are logged during the certification authority (CA) certificate chain-verification process when an invalid certificate is detected. This message DOES NOT indicate a problem with the current certificate.

Your only workaround is to ignore the Certificate Services did not start portion of the event description for events that are logged during the CA certificate chain-verification process.