I downloaded the full installer for v4.4.7 both here and from Major Geeks, but can't get it to install on either of my Win10Hx64 machines although it installed without issue on a Win7Ultx64 machine. A post-launch popup window declares that "Windows cannot access the specified device, path, or file. You may not have the appropriate permissions to access the item." That message box refers to "C:\\Users\*****\AppData\Local\Temp\_ir_sf_temp0\irsetup.exe", but I've checked in Windows Explorer and the file exists at that location. I've not only run the installer from right-clicking Start|Run and drilling down to choose the installer, but I've also right-clicked on that file in Explorer and selected the "Run as Administrator" option, but both produce the same error message.
Frustrating, and I'm wondering if this behavior might be related to the farkling which v4.4.1 gave the OS in both of those machines several months ago (there's a earlier thread in the forum on that set of issues). On one machine, the SFC and DISM repairs then were able to recover its function, but on the other I was forced to reinstall the OS from the original image and then reload and rebuild everything to current status over the following week (so a PITA, in other words).
I never had any problems with the AIO tool before v4.4.1, and while I've installed newer version updates after the recovery on all of them, I have not run the newer tool(s) on any machine as I was hesitant to go through that repair/rebuild process again this quickly. This latest AOI foible doesn't provide a lot of assurance that it won't occur again, but resetting all of the permissions manually isn't something I've got time to do just now. Hopefully there's a simple (and safe) fix.