PS Terminal Crashes: An error occurred while starting PowerShell Editor Services

[James-Livingston]

Issue Type: Bug

Open any .ps1 file, the terminal window will display the following error:
"
An error occurred while starting PowerShell Editor Services:

Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module)
at System.Reflection.Assembly.GetTypes()
at Microsoft.PowerShell.Commands.AddTypeCommand.LoadAssemblyFromPathOrName(List`1 generatedTypes)
at Microsoft.PowerShell.Commands.AddTypeCommand.EndProcessing()
at System.Management.Automation.CommandProcessorBase.Complete()
"

VS Code version: Code 1.33.1 (51b0b28, 2019-04-11T08:27:14.102Z)
OS version: Windows_NT x64 10.0.14393

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-7300U CPU @ 2.60GHz (4 x 2712)
GPU Status	2d_canvas: enabled checker_imaging: disabled_off flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software rasterization: enabled surface_synchronization: enabled_on video_decode: enabled webgl: enabled webgl2: enabled
Memory (System)	15.85GB (8.02GB free)
Process Argv
Screen Reader	no
VM	0%

Extensions (13)

Extension	Author (truncated)	Version
vscode-markdownlint	Dav	0.26.0
prettier-vscode	esb	1.8.1
gc-excelviewer	Gra	2.1.32
r	Iku	1.0.7
puppet-vscode	jpo	0.18.0
vscode-cosmosdb	ms-	0.10.1
mssql	ms-	1.5.0
python	ms-	2019.3.6558
azure-account	ms-	0.8.2
powershell	ms-	2.0.2
r-lsp	REd	0.1.0
code-spell-checker	str	1.6.10
vscode-ansible	vsc	0.5.2

(2 theme extensions excluded)

[davesbrown]

Getting same error windows server 2016

[TimK4]

I had the same issue, went through a couple of different things and uninstalled/reinstalled, nothing worked until I uninstalled and reinstalled the PowerShell extension. I believe it installed at a newer version - 1.12.1.

[brycesteel]

I had the same issue with the PowerShell Preview extension (ms-vscode.powershell-preview@2019.5.0, VS Code x64 1.34.0) on multiple Server 2016 systems with the out-of-the-box .NET 4.6.2. The error went away and things started working as soon as I installed .NET 4.7.2. I am assuming there is a dependency / prerequisite of .NET 4.7.x (given I had no such problems on Win10 1709 with .NET 4.7.1), but I did not separately test that. It would be nice if the extension requirements / "Platform support" mentioned this apparent requirement. BTW - loving the PSReadLine integration!

[brycesteel]

I suspect this may be more of an extension problem (seems to be for me at least), and I opened an issue over in the PowerShell extension accordingly: PowerShell/vscode-powershell#2022

[vscodebot]

This issue is caused by an extension, please file it with the repository (or contact) the extension has linked in its overview in VS Code or the marketplace for VS Code. See also our issue reporting guidelines.

Happy Coding!