Here my little contribution for the Adobe flash player deploy on the WSUS publisher.
I use the Adobe repository to get the updates for flash player ActiveX. But doesn't really work "plug&play".
When a deploy directly the update, it fail with this MSI log :
MSI (s) (3C:30) [14:52:55:575]: Product: Adobe Flash Player 21 ActiveX -- Installation failed.
MSI (s) (3C:30) [14:52:55:575]: Windows Installer installed the product. Product Name: Adobe Flash Player 21 ActiveX. Product Version: 188.8.131.52. Product Language: 1033. Manufacturer: Adobe Systems Incorporated. Installation success or error status: 1639.
MSI (s) (3C:30) [14:52:55:577]: MainEngineThread is returning 1639
Info 1639.Invalid command line argument. Consult the Windows Installer SDK for detailed command line help.
It's because WSUS publisher implicitly always add /qn options.
And by default, the Adobe repository add Command Line : /qn REBOOT=ReallySuppress
The msiexec has this options passed and fail : /qn /qn REBOOT=ReallySuppress
Only revise the update and remove "/qn" from Command Line
PS : it's very confusing to see /q in example /q, /s, /silent if it always implicit to wsus publisher... I think we need to remove this from text.