HRESULT 0x8009480B (CERTSRV_E_SIGNATURE

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Description:

One or more signatures did not include the required application or issuance policies. The request is missing one or more required valid signatures.

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CERTSRV_E_SIGNATURE_COUNT	CERTSRV_E_ISSUANCE_POLICY_REQUIRED

CERTSRV_E_SIGNATURE_REJECTED

CERTSRV_E_SIGNATURE_REJECTED The request contains signatures, but one or more of them do not meet the template’s application-policy or issuance-policy requirements.

What to check

Inspect the signing certificate’s EKUs and issuance policies, then compare them with the template requirements.
Verify that the signer is authorized for the exact certificate type and has not used an expired, revoked, or wrong-purpose certificate.
Correct the enrollment-agent configuration rather than altering the target subject’s request to mask the authorization failure.

Microsoft: Certificate template concepts

Microsoft: Manage certificate templates

Microsoft: Audit Certification Services

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