iTunes 11 suppress reboot
I'm having problems getting itunes to install without rebooting the workstation.
Neither stopped the reboot after installation. I didn't have this same issue with iTunes 10.
Set the property IS_ASU to "0" and this CA will not execute and it will not reboot after install.
Community Chosen Answer
I took a look in the iTunes64.msi and it seems that after InstallFinalize is set a Custom Acction called Set_REBOOT with the condition IS_ASU="1".
Set the property IS_ASU to "0" and this CA will not execute. I didn't test this, but you can do it very easy.
Also, you can create a MST and remove this CA from msi script.