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6 Appendix A: Product Behavior

  • Article

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

  • Microsoft Exchange Server 2003

  • Microsoft Exchange Server 2007

  • Microsoft Exchange Server 2010

  • Microsoft Exchange Server 2013

  • Microsoft Exchange Server 2016

  • Microsoft Exchange Server 2019

  • Microsoft Office Outlook 2003

  • Microsoft Office Outlook 2007

  • Microsoft Outlook 2010

  • Microsoft Outlook 2013

  • Microsoft Outlook 2016

  • Microsoft Outlook 2019

  • Microsoft .NET Framework 2.0

  • Microsoft .NET Framework 3.5

  • Microsoft .NET Framework 4

  • Microsoft .NET Framework 4.5

  • Microsoft .NET Framework 4.7

  • Microsoft .NET Framework 4.8

  • Windows 2000 Professional operating system

  • Windows XP operating system

  • Windows Vista operating system

  • Windows 7 operating system

  • Windows 8 operating system

  • Windows 8.1

  • Windows 10 operating system

  • Windows 2000 Server operating system

  • Windows Server 2003 operating system

  • Windows Server 2008 operating system

  • Windows Server 2012 operating system

  • Windows Server 2012 R2

  • Windows Server 2016 operating system 

  • Windows Server 2019 operating system

  • Windows Server 2022 operating system

  • Microsoft Outlook 2021

  • Windows 11 operating system

  • Microsoft Outlook 2024 Preview

  • Windows Server 2025 operating system

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 3:  Exchange 2003, Exchange 2007, Exchange 2010, Exchange 2013, Exchange 2016, and Exchange 2019 only implement the server role. Office Outlook 2003, Office Outlook 2007, Outlook 2010, Outlook 2013, Outlook 2016, Outlook 2019, .NET Framework 2.0, .NET Framework 3.5, .NET Framework 4, .NET Framework 4.5, Windows Vista, Windows 7, and Windows 8 only implement the client role. Windows 2000 Professional, Windows XP, Windows 2000 Server, Windows Server 2003, Windows Server 2008, and Windows Server 2012 implement both client and server roles.

<2> Section 3.1.4.1:  Office Outlook 2003, Office Outlook 2007, Outlook 2010, Outlook 2013, Outlook 2016, Outlook 2019, and inetcomm.dll in Windows 2000 Professional, Windows XP, Windows Vista, Windows 7, Windows 8, Windows 2000 Server, Windows Server 2003, Windows Server 2008, and Windows Server 2012 do not include the username in the initial AUTH command.

<3> Section 3.1.5.1:  .NET Framework 2.0, .NET Framework 3.5, .NET Framework 4, and .NET Framework 4.5 do not verify the syntax of 334 responses and instead keep state to remember whether it is the first server challenge or a subsequent server challenge.