Windows Security Log Event ID 4891

Operating Systems Windows 2008 R2 and 7
Windows 2012 R2 and 8.1
Windows 2016 and 10
Category
 • Subcategory
Object Access
 • Certification Services
Type Success
Corresponding events
in Windows 2003
and before
 
Discussions on Event ID 4891
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4891: A configuration entry changed in Certificate Services

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Windows logs this event to document changes to Certificate Services registry entries many of which correspond to properties in the CA Properties dialog of Certification Authority MMC snap-in.

You can learn more about the various entries at http://technet2.microsoft.com/windowsserver/en/library/7fe116af-971b-44d3-809e-00606c080a191033.mspx?mfr=true

Node: the subkey path under HKLM\SYSTEM\CurrentControlSet\Services\CertSvc\Configuration\ca name

Entry: The registry value name

Value: the data of the value

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Description Fields in 4891

  • Node: %1
  • Entry: %2
  • Value: %3

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Examples of 4891

A configuration entry changed in Certificate Services.

Node: PolicyModules\CertificateAuthority_MicrosoftDefault.Policy
Entry: RequestDisposition
Value: 257

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