Event ID - 53

Event Id53
SourceCertSvc
DescriptionCertificate Services denied request % because Access is denied. 0x80070005 (WIN32: 5). The request was for (Unknown Subject). Additional information: Denied by Policy Module.
Event InformationThe below given links to Microsoft articles will give information about the resolution.
Reference Links Access Denied" When Requesting Certificate Through Web Access

A Certificate Request That Uses a New Template Is Unsuccessful

Windows 2000 Certification Authority Configuration to Publish Certificates in Active Directory of Trusted Domain

A Certification Authority Cannot Use a Certificate Template

Cannot Establish an L2TP/IPSec Tunnel Between a Cisco Router and a Windows 2000 Certificate Authority

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