Condition	Description
s255	l255
LaunchCondition	Condition
1 OR %FORCE_MSI_UPGRADE OR FORCE_MSI_UPGRADE OR %FORCE_MSI_UPGRADE_NT OR FORCE_MSI_UPGRADE_NT OR Version9X OR (VersionNT < 500)	Windows NT Version 5.0 and higher require a service pack for installation of the Windows Installer.
%FORCE_MSI_UPGRADE OR FORCE_MSI_UPGRADE OR Version9X OR (VersionNT > 351)	The Windows Installer requires a higher version of Windows NT.
%FORCE_MSI_UPGRADE OR FORCE_MSI_UPGRADE OR Version9X OR (VersionNT > 400) OR (ServicePackLevel >= 6)	The Windows Installer requires Windows NT Version 4.0 Service Pack 6.