Enter-PSSession cmdlet fails when network path is specified in PSModulePath environment variable

This article provides a resolution to an issue that Enter-PSSession unexpectedly terminates when a network path is specified in PSModulePath.

Original KB number:   4076842

Symptom

When a network path is specified in the PSModulePath environment variable, the Enter-PSSession cmdlet fails, and you receive the following error message:

Enter-PSSession: The 'Measure-Object' command was found in the module 'Microsoft.PowerShell.Utility', but the module could not be loaded. For more information, run 'Import-Module Microsoft.PowerShell.Utility'.
At line:1 char:1
+ Enter-PSSession server_name
+ ~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : ObjectNotFound: (Measure-Object:String) [Enter-PSSession], CommandNotFoundException
+ FullyQualifiedErrorId : CouldNotAutoloadMatchingModule

Cause

When a PowerShell session is created and authenticates through Kerberos, the session doesn't support double hop. So, the PowerShell session can't authenticate by using network resources.

When PowerShell tries to enumerate the modules in the network path, the operation fails with the Access Denied error, and the command unexpectedly terminates.

Resolution

To fix the issue, create the PowerShell session to authenticate with CredSSP. It needs to be configured in advance. On the computer that is the target of the Enter-PSSession command, run this command:

Enable-WSManCredSSP -Role Server

On the computer on which you run the Enter-PSSession command, run this command:

Enable-WSManCredSSP -Role Client -DelegateComputer Server_name  

Note

Server_name is the name of the computer that is the target of the Enter-PSSession command.

Every time that this command is executed, the specified Server_name is added to the list. The list is stored in the following registry subkey:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\CredentialsDelegation\AllowFreshCredentials

To view the status of the CredSSP configuration, run the Get-WSManCredSSP command.

After CredSSP is enabled, you can authenticate through CredSSP by using this command:

Enter-PSSession server_name -Authentication CredSSP -Credential (Get-Credential user_name)

Workaround

To work around this issue, map the network share to a drive letter such as S:, and then put the drive letter in the PSModulePath. Having a drive letter that points to a network share won't cause the unexpected termination of Enter-PSSession.

However, inside the remote PowerShell session the mapped drive letter won't be available, and the modules on the network share will still not be available. Only the local modules will be available.

This workaround will only prevent the Enter-PSSession from crashing while allowing normal PowerShell sessions to have access to the modules that are on the network share.