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
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 2.2.2: For the TokValue field, Windows supports file system paths in the UncPath format and in the format of a local Windows file system path. No other syntaxes are supported for Windows.
<2> Section 3.1.5: The following versions of Windows do not support protocols and messages involving the psscripts.ini file (this behavior applies to all references to psscripts.ini throughout this document):
Windows 2000
Windows XP
Windows Server 2003
Windows Vista
Windows Server 2008
Windows 7
<3> Section 3.1.5: These steps are not applicable to the following releases of Windows:
Windows 2000
Windows XP
Windows Server 2003
Windows Vista
Windows Server 2008
<4> Section 3.1.5: In Windows, the administrative tool displays an error to the user if any errors in the protocol sequence in this section occur, which indicates that the GPO cannot be updated with the intentions specified through the protocol. Windows does not update the contents of the scripts.ini or psscripts.ini file if any of the protocol sequences in this section fail.
<5> Section 3.2.1.1: In Windows, the value of the Default Executable Group Order for Startup or Shutdown scripts is read from the registry location HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\RunComputerPSScriptsFirst . It is of type REG_DWORD. The value 1 indicates PSFirst.
In Windows, the value of the Default Executable Group Order for Logon or Logoff scripts is read from these two registry locations, in order of priority:
HKEY_LOCAL_MACHINE
\Software\Microsoft\Windows\CurrentVersion\Policies\System\RunUserPSScriptsFirst . It is of type REG_DWORD, a 32-bit number. The value 1 indicates PSFirst.
HKEY_CURRENT_USER
\Software\Microsoft\Windows\CurrentVersion\Policies\System\RunUserPSScriptsFirst . It is of type REG_DWORD, a 32-bit number. The value 1 indicates PSFirst.
<6> Section 3.2.5: Information about the PSScripts group in Windows is not applicable to the following versions of Windows:
Windows 2000
Windows XP
Windows Server 2003
Windows Vista
Windows Server 2008