This is an issue that is specific to the Microsoft Edge browser and Microsoft Smartscreen, Microsoft basically want you to be as safe as possible which is both admirable and reasonable but unfortunately the problem is in the implementation, they go well over the top and block genuine software and unfortunately are not as assertive to correct their mistakes when it is reported to them.
To work around this please see the following :
Click on the warning
3 dots should now appear on the right hand side click them and select the Keep option.
You will now see the following click on the show more option.
This will give you some more options, select keep anyway.
You should now see that you are able to open awmsetup.exe, click open file.
You will now see the following, click the more info button again.
You should now see the option to run anyway, click the run anyway button.
Hopefully the Auto Workshop Manager installer should now be launched. You will need to accept the agreement to install software.
Of course if you are seeing this issue with other software then the simplest way to get around this whole problem is to switch Internet browsers. Any of the leading browsers will be absolutely fine such as Google chrome Chrome or Firefox, our personal recommendation is Opera Internet browser.