asp.net mvc - Nuget give this error "ps1 cannot be loaded because running scripts is disabled" -

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i have new empty mvc 5 project, , try install nuget packages. when insert in nuget console command :update-package got following asnwer: 

file e:\webapp\packages\microsoft.codedom.providers.dotnetcompilerplatform.1.0.0\tools\uninstall.ps1 cannot loaded because running scripts  disabled on system. more information, see about_execution_policies @ http://go.microsoft.com/fwlink/?linkid=135170.at line:1 char:3 + & 'e:\webapp\packages\microsoft.codedom.providers.dot ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~     + categoryinfo          : securityerror: (:) [], pssecurityexception     + fullyqualifiederrorid : unauthorizedaccess

then start install new packages , got again message:

webapp\packages\modernizr.2.8.3\tools\install.ps1 cannot loaded because running scripts disabled on system

i saw posts related message, not related mvc projects.

my question is:

why messages?

what can fix issue?

this issue, can appear on server application run? scripts not run expected?

i guess specific package trying install needs run powershell script , reason powershell execution disabled on machine. can search google on "how enable powershell" complete guide generaly goes this:

  • open powershell command window (just search powershell after pressing windows start button)
  • check out current restrictions typing "get-executionpolicy"
  • enable powershell typing "set-executionpolicy remotesigned"

this issue not affect server planing install application on.


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