Upon restarting the certserv we see:

Log Name: Application
Source: Microsoft-Windows-CertificationAuthority
Date: 24/12/2020 10:57:35
Event ID: 134
Task Category: None
Level: Information
Keywords:
User: SYSTEM
Computer: 00DC0.domain.local
Description:
A certificate in the chain for CA certificate 0 for domain-00-XAB-CA 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 CERT_E_EXPIRED).
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-CertificationAuthority" Guid="{6a71d062-9afe-4f35-ad08-52134f85dfb9}" />
<EventID>134</EventID>
<Version>0</Version>
<Level>4</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2020-12-24T10:57:35.678450400Z" />
<EventRecordID>4677</EventRecordID>
<Correlation />
<Execution ProcessID="9848" ThreadID="4020" />
<Channel>Application</Channel>
<Computer>00DC0.domain.local</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData Name="MSG_I_CA_CERT_EXPIRED">
<Data Name="CACommonName">domain-00-XAB-CA</Data>
<Data Name="ErrorCode">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 CERT_E_EXPIRED)</Data>
<Data Name="CACertIdentifier">0</Data>
</EventData>
</Event>

Is this causing an issue with revocation?