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.

  • Windows 2000 operating system

  • Windows XP operating system

  • Windows Server 2003 operating system

  • Windows Vista operating system

  • Windows Server 2008 operating system

  • Windows 7 operating system

  • Windows Server 2008 R2 operating system

  • Windows 8 operating system

  • Windows Server 2012 operating system

  • Windows 8.1 operating system

  • Windows Server 2012 R2 operating system

  • Windows 10 operating system

  • Windows Server 2016 operating system

  • Windows Server operating system

  • Windows Server 2019 operating system

  • Windows Server 2022 operating system

  • Windows 11 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 2.2.1.1: Windows sets the dwReserved1 value to 0xCD64CD64.

<2> Section 2.2.3.1.8: The TXUSER_DTCLURMCONFIGURE_MTAG_ADD_LOG_FULL message is not supported in Windows 2000, Windows XP, Windows Server 2003, Windows Vista, and Windows Server 2008.

<3> Section 2.2.3.3.16: Windows limits the maximum number of enlistments per transaction to 64.

<4> Section 3.2.1: The LU Transactions Enabled flag is not supported in Windows 2000, Windows XP, Windows Server 2003, Windows Vista, and Windows Server 2008. Otherwise, in Windows, the DTCLU extension protocol is enabled by default.

<5> Section 3.3.2.1: Windows sets the value of the LU Status Timer to 30 seconds.

<6> Section 3.3.5.4.8: No applicable Windows releases perform any processing specified for the receipt of the TXUSER_DTCLURECOVERYINITIATEDBYDTC_MTAG_ERROR_FROM_OUR_COMPARESTATES message. This message is processed as an invalid message, as specified in [MS-DTCO] section 3.1.6. Even though the state diagram CONNTYPE_TXUSER_DTCLURECOVERYINITIATEDBYDTC, Part 4 in section 3.3.1.5.21 shows the processing for receipt of this message, no versions of Windows perform this processing.

<7> Section 3.3.5.5.5: No applicable Windows releases perform any processing specified for the receipt of the TXUSER_DTCLURECOVERYINITIATEDBYLU_MTAG_ERROR_OF_OUR_COMPARESTATES message. This message is processed as an invalid message, as specified in [MS-DTCO] section 3.1.6. Even though the state diagram CONNTYPE_TXUSER_DTCLURECOVERYINITIATEDBYLU acceptor states in section 3.3.1.6.11 shows the processing for receipt of this message, no applicable Windows releases perform this processing.

<8> Section 5.1: A security level of No Authentication is used in Windows 2000 and Windows XP operating system Service Pack 1 (SP1). Otherwise, Mutual Authentication is used by default in applicable Windows releases.

<9> Section 5.1: The LU Transactions Enabled flag is not supported in Windows 2000, Windows XP, Windows Server 2003, Windows Vista, and Windows Server 2008. Otherwise, in Windows, the DTCLU extension protocol is enabled by default.