Every time I try to update Intel Fortran or C++, I end up with problems during install. This discourages me from upgrading. Even if I decide to uninstall all compilers first, starting afresh with the installers, the install procedure tells me I already have the product installed and it asks if I like to upgrade. Sure, this is probably a bug in my registry keys (which I have not touched) or the windows installer. Trying to remedy this with wiindows troubleshooters do not work, and the troubleshooter instructs me to download a second troubleshooter which fails to diagnose the problem. A year ago, in order to uninstall the Intel products I had to download old versions first, install them, and then uninstall. This took significant download time and stole productive hours. Given all the problems with registry and windows installer, I have come to the conclusion that I would really like Intel to stop using installers for their compiler products.
Please, please, start shipping simple zip-files and give instructions on how to integrate with Visuals Studio and set environment variables. This would most probably make life significantly easier for a lot of users, and would enable moving installations on disk or to a new computer by simply copying the installation.