After doing an unattended installation of the Citrix Online Plugin it was not possible to launch a Published Application.

It would just give the error mesage: “citrix online plugin could not launch the requested published application”.

Even though the installation finished without errors and the logfiles indicated no failure at all I was able to fix it by using 2 steps described in CTX123761.

First install the Microsoft Visual C++ 2005 Redistributable Package SP1 and the (re)deploy the Online Plugin adding a Transform called transform_notstrict.mst which can be found in the aforementioned KB Article.