WTF? I just now tried to install LibreOffice on Windows 10 14393.351 with the installer "LibreOffice_5.2.4_Win_x86.msi" and I got this error: “The System Administrator Has Set Policies to Prevent This Installation.” No, I did not set that policy or any policy to block installing anything. The fix for me was to add the "Installer" key and "DisableMSI" dword in order to have this registry value [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Installer] "DisableMSI"=dword:00000000. What is this stupidity? I'm really pissed off about this. Is this to prevent Joe Sixpack from installing LibreOffice? Anybody got any idea what's going on?