My problem now is that the version check in WPP does not work.Did you try to check the version in registry
The rule that lets the client determine if the update is installed:This does not work, maybe because the version is 11.0.06 instead of 11.0.6.<msiar:MsiProductInstalled ProductCode="{ac76ba86-7ad7-1031-7b44-ab0000000001}" VersionMin="11.0.6.0"/>
Does anyone know how the installer compares the version in registry? That would help me a lot.
e.g. for x86 systems
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall{AC76BA86-7AD7-1031-7B44-AB0000000001}\DisplayVersion values "11.0.06"
e.g. for x64 systems
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall{AC76BA86-7AD7-1031-7B44-AB0000000001}\DisplayVersion values "11.0.06"