Can't installer nuget package because of "Échoué to initialize the PowerShell host"

[ForumBot]

All of a sudden, I am getting this error when upgrading Nuget packages. None of the fixes that I have come across work. I am using Visual Studio 2013.



'Newtonsoft.Json 6.0.3' already installed.



Adding 'Newtonsoft.Json 6.0.3' to Tournaments.Notifications.



Successfully added 'Newtonsoft.Json 6.0.3' to Tournaments.Notifications.



Executing script file 'F:\My Webs\BasketballTournaments\MainBranch\packages\Newtonsoft.Json.6.0.3\tools\install.ps1'.



Failed to initialize the PowerShell host. If your PowerShell execution policy setting is set to AllSigned, open the Package Manager Console to initialize the host first.

**Package Manager Console**



Attempting to perform the InitializeDefaultDrives operation on the 'FileSystem' provider failed.

If I wait for the initialization to finish in the console I was able to add some packages.

[ForumBot]

Setting an execution policy to RemoteSigned or Unrestricted should work. It must be changed under an administrator mode via a PowerShell console. Be aware that changes will be applied according to the bit version of the PowerShell console, so 32bit or 64 bit. So if you want to install a package in Visual Studio (32 bit version) which requires a specific policy you should change settings of the policy via PowerShell (x86).

The command in PowerShell (as administrator) to set the policy to unrestricted (as noted by @Gabriel in the comments) is:

```
start-job { Set-ExecutionPolicy Unrestricted } -RunAs32 | wait-job | Receive-Job

```

Having set the policy to unrestricted, you will want to set the policy back to its original after the install is complete.