PS1 scripts invocation ends with "cannot be loaded because running scripts is disabled on thi s system", affect MS Windows desktop series

PS1 scripts invocation ends with "cannot be loaded because running scripts is disabled on thi s system".
This was spotted on Windows 10 but it seems it affect more MS Windows desktop series (at leas 8.x too) - based on HiChat discussion.

When I open PowerShel, enter the bin folder and run .\standalone.ps1 I get this:

.\standalone.ps1 : File E:\jboss-eap-7.0\bin\standalone.ps1 cannot be loaded because running scripts is disabled on this s system. 
For more information, see about_Execution_Policies at http://go.microsoft.com/fwlink/?LinkID=135170.
At line:1 char:1
+ .\standalone.ps1
+ ~~~~~~~~~~~~~~~~
+ CategoryInfo : SecurityError: (:) [], PSSecurityException
+ FullyQualifiedErrorId : UnauthorizedAccess

what "helped" is this:
Set-ExecutionPolicy RemoteSigned
but I had to run powershell as administrator because it's changing registry key ... so well, not straightforward usage of ps1 scripts ... Not everybody is able to run in admin mode.