Does the same happen if you right-click the file (first Studio, then MultiTerm) and chose "Run as administrator"?

Hi there, thank you for replying.  I just checked that now and yes the same happens there as well.

I assume you run Windows 10. Please check in your system settings, if you allow the installation of non-Microsoft apps.

In my German OS this is via Alle Einstellungen -> Apps -> Quellen für das Abrufen von Apps auswählen:

Otherwise I hope someone from SDL will offer you better help soon.

Hi yes I actually changed that setting the other day to allow my computer to accept non-Microsoft apps (but to warn me before installing them) as I saw that as a suggestion.   This made no difference before (when installing 2015 and 2017 though I had windows 8 then) when I had it to accept appsf rom the Microsoft Store which is the recommended setting.

had it set to accept apps only from the Microsoft Store* 

And yes I am currently on Windows 10.

Hello Anne M Corbett

Please try the following solutions: 

1. Disable User Account Control on your computer: https://gateway.sdl.com/apex/communityknowledge?articleName=000001373

2. Turn of your antivirus, run the installers and when the installation is finished turn it back on.

3. Disable the SmartScreen Filter in Windows 10: https://www.maketecheasier.com/disable-smartscreen-filter-windows10/

Thank you,

Sorin

Thank you  Sorin,

The first step does not work for me as I am the only account on the computer so the only administrator and the option of never being notified of changes as it says in that article you included is not available.  As to step 2, I have seen the suggestion elsewehere about turning off the antivirus but I am somewhat wary of doing that even for a few minutes.    Step 3 is the same.   I do not know why Windows 10 is throwing this obstacle in the way of installing an SDL product when SDL is a very legitimate company.  By the way should I delete those two .exe files and download them again before re-installing.   

I tried step 3. It made no difference to the message I get saying this app can't run .... I am unwilling as I said to risk my computer's security and this should not be happening at all.  

Slightly unnrelated to this is an email I got a while ago from SDL saying I earned a level 3 achievement but all I have done is ask a question, not answer someone else's.  This is bizarre but the issue at hand is more important. thanks.