@hucker said in Duplicate Opera installation?:
... There's no need to hide the software in there, unless you're trying to forbid another person from opening Opera?! Just because it's installed they don't have to use it.
One major reason to install software into Appdata folder is limited users inability to install into normal (programfiles) folder. Non-administrative users can't install anything into programfiles, but they can install things into Appdata... Chrome started (or more likely it was first major application with) this stupidity and Microsoft does not care.
If Chrome would require admin approval to install in all limited corporate computers, then most likely it would not have been that widespread.