Click on View, then on Summary Information.
Remove all language codes except the one that you want,
for example 1033 (english) or 1031 (german).
It's not possible to add other language codes in
summary information of that MSI file.
If your language is not in the list, edit the properties of the
software install package in the GPO, go to extended properties and
check "ignore language".
Go to the table InstallExecuteSequence
Set PreventDowngrade to 0
Go to the table Properties
Add property DESKTOP_SHORTCUTS with value 0
Change property SCHEDULE_ASUW from 1 to 0
The package AppleApplicationSupport must be installed before QuickTime. The package
AppleSoftwareUpdate need not, and should not be deployed. if you plan
to deploy upgrades with GPO.
Please note that iTunes also contains AppleApplicationSupport.msi, and I
haven't yet deployed QuickTime and iTunes via GPO to the same PCs.
I guess you should check the version numbers of this file, or the included files,
and ideally select versions of iTunes and QuickTime with the same
version of AppleApplicationSupport. Otherwise it may or may not work.
Also you should make sure that every PC that needs Quicktime or iTunes
or both gets a copy of AppleApplicationSupport, but not twice!
2016-11-25: added warning that software is probably discontinued
2016-11-25: fixed AppleSoftwareHelper -> AppleApplicationSupport
2013-03-16: fixed typo & added note about iTunes