Processing data for a remote command failed with the following error message

When running a command using PowerShell remoting from C# we were receiving the following errors.

Processing data for a remote command failed with the following error message: <f:WSManFault xmlns:f="http://schemas.microsoft.com/wbem/wsman/1/wsmanfault" Code="3762504530" Machine="servername"><f:Message><f:ProviderFault provider="microsoft.powershell" path="C:\Windows\system32\pwrshplugin.dll"></f:ProviderFault></f:Message></f:WSManFault> For more information, see the about_Remote_Troubleshooting Help topic.

...And...

Processing data from remote server servername failed with the following error message: The WSMan provider host process did not return a proper response.


It turned out that the first command being run was executing unmanaged C# code through the PowerShell remoting connection. There was an issue with this code (a missing ref statement) which caused the code to crash. 


Subsequently this caused further commands executed through the PowerShell remoting connection to fail with the "The WSMan provider host process did not return a proper response." error.


The "The WSMan provider host process did not return a proper response" can also be caused by the MaxMemoryPerShellMB setting being too low. For more information see the following page:

https://www.centrel-solutions.com/media/xiaconfiguration/AdminGuideWeb/PowerShellOutOfMemory.html



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