This might even be the reason that caused Microsoft to remove ISO images for Windfrom public servers before eventually restoring them. But it is definitely a good idea to create a backup of your apps and their licenses to avoid issues if you decide to upgrade your Windows 10 to newer builds. It is not known if this is an intentional step taken by Microsoft where incompatible apps are silently removed or whether it is a bug in the setup program. So, it can remove even some paid app which you purchased earlier to use with your Windows version prior to the upgrade. The operating system does not provide a single warning or extra information to the user. The worst thing is that you cannot even guess what exactly will be removed. This is a very unexpected and unpleasant behavior. It appears that Windows 10 version 1511 is uninstalling mostly those apps which work directly with hardware or perform some fine tuning of drivers. However, it is Microsoft's responsibility to inform the user about which apps are going to be removed after such a system upgrade to a new build. It might be that some of these apps might be incompatible, especially if you have an older version of the app installed. Other apps which are allegedly uninstalled for *some* users are CPU-Z, CPUID, CCleaner, SmartFTP, Avira Antivir Security, Novell client, Cisco VPN client, NetGear Genie and ESET AntiVirus. On one of my PCs, it uninstalled the ASUS SmartGesture drivers which I had installed and the ASUS SmartGesture software too which I had configured to disable certain gestures, and replaced it with stock drivers from Windows Update which re-enabled those accident-prone touchpad gestures.

Another app which the Threshold 2 upgrade 'does not like' is the software information tool called Speccy. For some reason, the operating system uninstalls it if you upgrade Windows 10 RTM to Windows 10 version 1511. Catalyst is Control Panel software for the video driver. ATI/AMD users suffered too by the removal the Catalyst driver software. However, this behavior is not limited to games. Advertisement I saw the first mention of such hostile behavior from one of our readers, 'xtcrefugee', who warned us that Windwill remove Windows 7 games for Windows 10 automatically.

Speccy windows 10 removed