
Just to be clear, the suggestion did work. Just a heads up for anyone who tries the "Remove the Hyper-V" suggestion. I had to remove all of the network adapters from all of my VMs, remove the Hyper-V feature (two reboots), add it back (two reboots), and uncheck the "Hyper-V Extensible Virtual Switch" option each physical adapter before I could recreate the virtual switches and attach them to the physical adapters. Whenever I tried to start my VMs they failed with a pretty ambiguous error. All of my custom virtual networks were gone. After a little bit of investigation I realized that my virtual switch had been wiped. On Monday I was going to open a VM to test a script and noticed that all of my VMs were off. Note, the above is NOT a workaround for being unable to use remote software - that just won't work unless you completely disable SIP.I also need to give a little extra detail into my experience with this, a week or more after the suggestion to remove the Hyper-V feature and add it back. If not, repeat this process - probably another PID blocking you now. Find the PID, quit the process, try to click/press/tap/space/automator the button again, should work. Open Activity Monitor and sort by the PID field.A message will pop onto Console (under your Device's main logs) that looks someting like this: “Dropping mouse down event because sender’s PID (1234) isn’t self or 0”.Click, press, tap, space, automator the button.Open Console ( Finder > Go > Applications > Utilities > Console ).To find out what bit of software or hardware happens to be being blocked, you have to establish what Process ID it uses, then identify the software/hardware from its PID, and go from there, either killing or uninstalling the hardware/software, and repeating until the click succeeds. This security software was the process actually "performing" the click. Turns out it was a piece of security software that hadn't been authorized correctly. Nothing was working for me, local clicking, keyboard selection, nothing. I have tried unlocking the system preferences page before clicking "Allow".I have tried right-clicking and clicking on "open" on the.I have tried running the installer through terminal, with and without the sudo command.I am on a Macbook Pro 13 inch 2016 with touchbar, running macOS High Sierra The problem is that I don't know of any programs that I'm running that do this. I looked online, and all of the solutions say that there is some kind of program running that captures/forwards mouse clicks and such, and thus I am not "directly" clicking on the Allow button. When I click on it, nothing happens, and the button and message stays there. I am trying to install some software, (at this particular moment I want to install VirtualBox, although this issue has happened with other software), and I have to click "Allow" in System Preferences, in the Security & Privacy -> General window.
