PowerShell Language Server process didn't start!

[DParthiban-XOM]

Prerequisites

• I have written a descriptive issue title.
• I have searched all open and closed issues to ensure it has not already been reported.
• I have read the troubleshooting guide.
• I am sure this issue is with the extension itself and does not reproduce in a standalone PowerShell instance.
• I have verified that I am using the latest version of Visual Studio Code and the PowerShell extension.
• If this is a security issue, I have read the security issue reporting guidance.

Summary

Cannot open PowerShell ext. after recent updates of extensions, including SQL PowerShell Language Server process didn't start!

PowerShell Version

Name                           Value                                                                                   
----                           -----                                                                                   
PSVersion                      5.1.22621.4391                                                                          
PSEdition                      Desktop                                                                                 
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}                                                                 
BuildVersion                   10.0.22621.4391                                                                         
CLRVersion                     4.0.30319.42000                                                                         
WSManStackVersion              3.0                                                                                     
PSRemotingProtocolVersion      2.3                                                                                     
SerializationVersion           1.1.0.1

Visual Studio Code Version

1.96.2
x64

Extension Version

ms-vscode.powershell@2024.4.0

Steps to Reproduce

Just open a VSC to edit a PS script

Visuals

No response

Logs

No response

[ThubLives]

I am having the same issue. Everything looks the same as the original report (e.g. Windows PowerShell 5.1, extension version 2024.4.0, etc.), but I've updated to vscode 1.96.3 and the problem is still happening.

More background:
Initially, the language server seemed to be timing out, but since I tried to uninstall and re-install the PowerShell extension it now immediately reports that the language server process didn't start.

vscode-powershell.log

I've also tested with PowerShell 7.3.4 and 7.4.6 and they behaved the same way.

[ThubLives]

I found this in the default terminal:

Exception encountered starting EditorServices. Exception logged in C:\__w\1\s\src\PowerShellEditorServices.Hosting\Commands\StartEditorServicesCommand.cs on line 239 in EndProcessing:
System.MissingMethodException: Method not found: 'Microsoft.Extensions.Logging.ILoggerFactory Serilog.SerilogLoggerFactoryExtensions.AddSerilog(Microsoft.Extensions.Logging.ILoggerFactory, Serilog.ILogger, Boolean)'.
   at Microsoft.PowerShell.EditorServices.Hosting.EditorServicesServerFactory.Create(String logDirectoryPath, Int32 minimumLogLevel, IObservable`1 hostLogger)
   at Microsoft.PowerShell.EditorServices.Hosting.EditorServicesRunner..ctor(HostLogger logger, EditorServicesConfig config, ISessionFileWriter sessionFileWriter, IReadOnlyCollection`1 loggersToUnsubscribe)
   at Microsoft.PowerShell.EditorServices.Hosting.EditorServicesLoader.LoadAndRunEditorServicesAsync()
   at Microsoft.PowerShell.EditorServices.Commands.StartEditorServicesCommand.EndProcessing()

[andyleejordan]

Hi, please try the pre-release version of the extension. We removed Serilog as a dependency because of the frequency in which it has conflicts (like you're seeing here). Let me know if that works for you!

[JustinGrote]

Closing as dupe of #5084 for housekeeping, feel free to update there if you are still having problems after using the latest prerelease.