The following applies to all the Windows .exe installers. The .msi installers do not appear to suffer from this problem.
I was able to install the client and server just fine on all my machines (all running Windows 10 x64) until I changed some security settings, then the installer wouldn’t run at all. Specifically, the culprit is found under Settings -> Update & Security -> Windows Security -> App & browser control -> Exploit protection settings -> Force randomization of images (Mandatory ASLR). I changed it from “Use default (off)” to “On by default.”
The new behavior with the new setting when double-clicking on the .exe installer (server or client (either client) will do) is as follows: The user account control window pops up, I click “yes,” then…nothing happens.
A check in the Event Viewer show that a pop-up was supposed to come up (I wonder what happened to it…) showing the following error: UrBackup Server 2.4.13.exe - Application Error : The application was unable to start correctly (0xc000007b). Click OK to close the application.
I’ll switch over to the .msi installers for the future. Just thought I should pass on that I ran into the problem.