Failure in Powershell, it cannot be initialized, file blocked by software restriction policies, how to fix?

Question

I was using the package manager console in Visual Studio 2015, when opening the powershell appeared a message if I wanted to run it in an unreliable source file, I clicked yes on showed this message 3 more times, I clicked yes three times and then appeared this other message.

Translating into English the short message is this:

The shell cannot be started, a failure occurred during its startup: Errors occurred while loading Microsoft.Powershell.Core format data files, C: windows... Certificate.format.ps1.xml, the file was ignored due to the following validation exception: C file: windows... Certificate.format.ps1.xml cannot be loaded by software restriction policies like those created with the group policy

How to fix this problem?

Answer 1

The standard Powershell execution policy is a bit restrictive even, you can see which restriction policy is active with cmdlet

Get-ExecutionPolicy

And you can use the cmdlet Set-ExecutionPolicy to change it

Set-ExecutionPolicy RemoteSigned

RemoteSigned works in most cases, it is only more restrictive than the Unrestricted.

Note: Don’t forget to open Powershell as an administrator.

More details on Using the Set-Executionpolicy Cdmlet