5 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.

• Microsoft Exchange Server 2003

• Microsoft Exchange Server 2007

• Microsoft Exchange Server 2010

• Microsoft Exchange Server 2013

• Microsoft Exchange Server 2016

• Microsoft Office Outlook 2003

• Microsoft Office Outlook 2007

• Microsoft Outlook 2010

• Microsoft Outlook 2013

• Microsoft Outlook 2016

• Microsoft Exchange Server 2019

• Microsoft Outlook 2019

• Microsoft Outlook 2021

• Microsoft Outlook LTSC 2024

• Microsoft Exchange Server Subscription Edition

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 2.2.3.2.2.1: If the string named property belongs to the PS_INTERNET_HEADERS property set ([MS-OXPROPS] section 1.3.2), then the Office Outlook 2003, Office Outlook 2007, Outlook 2010, and Outlook 2013 implementations of the .msg File Format will convert the Unicode property name to lower case before computing the equivalent CRC-32 for it.

<2> Section 2.4.2.2:  Office Outlook 2003, Office Outlook 2007 and Outlook 2010 will not open a .msg file with zero-length property streams of type PtypString or PtypString8.