6 Appendix A: Product Behavior

The information in this specification is applicable to the following Microsoft products or supplemental software. References to product versions include updates to those products.

The terms "earlier" and "later", when used with a product version, refer to either all preceding versions or all subsequent versions, respectively. The term "through" refers to the inclusive range of versions. Applicable Microsoft products are listed chronologically in this section.

The following tables show the relationships between Microsoft product versions or supplemental software and the roles they perform.

Windows Client Releases

Server Role

Client Role

Windows Vista operating system

NA

Yes

Windows 7 operating system

NA

Yes

Windows 8 operating system

NA

Yes

Windows 8.1 operating system

NA

Yes

Windows 10 operating system

NA

Yes

Windows 11 operating system

NA

Yes

Windows Server Releases

Server Role

Client Role

Windows Server 2008 operating system

Yes

Yes

Windows Server 2008 R2 operating system

Yes

Yes

Windows Server 2012 operating system

Yes

Yes

Windows Server 2012 R2 operating system

Yes

Yes

Windows Server 2016 operating system

Yes

Yes

Windows Server operating system

Yes

Yes

Windows Server 2019 operating system

Yes

Yes

Windows Server 2022 operating system

Yes

Yes

Windows Server 2025 operating system

Yes

Yes

Exceptions, if any, are noted in this section. If an update version, service pack or Knowledge Base (KB) number appears with a product name, the behavior changed in that update. The new behavior also applies to subsequent updates unless otherwise specified. If a product edition appears with the product version, behavior is different in that product edition.

Unless otherwise specified, any statement of optional behavior in this specification that is prescribed using the terms "SHOULD" or "SHOULD NOT" implies product behavior in accordance with the SHOULD or SHOULD NOT prescription. Unless otherwise specified, the term "MAY" implies that the product does not follow the prescription.

<1> Section 1.5: On Windows, only the URL specified in the validated certificate AIA extension is used.

<2> Section 2.1: OCSP Extensions conform to OCSP over HTTP as described in [RFC2560] Appendix A.

<3> Section 3.1.5: On Windows, OCSP clients generate the OCSP request as follows:

  • The version field is set to 1.

  • The requestorName and requestExtensions request fields are not included in the request.

  • The requestList always contains only one request.

  • The CertId field always uses the SHA-1 hash algorithm.

  • The OCSP Extensions client does not sign the requests.

<4> Section 3.2: Only Windows Server 2008 and later can perform the server role.

<5> Section 3.2.5: Windows Server 2008 allows only one request in the requestList field.