Skip to content

Starting Powershell error #4939

Closed
Closed
Starting Powershell error#4939

Description

@ErzWaynie
ErzWaynie
opened on Sep 23, 2025

Environment

PSReadLine: 2.2.0-beta2
PowerShell: 7.6.0-preview.4
OS: Microsoft Windows 10.0.26100
BufferWidth: 120
BufferHeight: 30

Last 0 Keys

Exception

System.TypeLoadException: Could not load type 'System.Management.Automation.Subsystem.PredictionResult' from assembly 'Microsoft.PowerShell.PSReadLine.Polyfiller, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.
   at Microsoft.PowerShell.PSConsoleReadLine.PredictionViewBase.Reset()
   at Microsoft.PowerShell.PSConsoleReadLine.PredictionInlineView.Reset()
   at Microsoft.PowerShell.PSConsoleReadLine.Prediction.Reset()
   at Microsoft.PowerShell.PSConsoleReadLine.Initialize(Runspace runspace, EngineIntrinsics engineIntrinsics)
   at Microsoft.PowerShell.PSConsoleReadLine.ReadLine(Runspace runspace, EngineIntrinsics engineIntrinsics, CancellationToken cancellationToken)

Activity

  1. microsoft-github-policy-service
    added
    Needs-Triage 🔍It's a new issue that core contributor team needs to triage.
    on Sep 23, 2025

  2. github-actions commented on Sep 23, 2025

    @github-actions
    github-actionsbot
    on Sep 23, 2025 – with GitHub Actions

    This issue was fixed in 2.2.0-beta3 version of PSReadLine. You can fix this by upgrading to the latest 2.3.5 version of PSReadLine.
    To upgrade, simply run Install-Module PSReadLine -AllowPrerelease -Force from your PowerShell console.

    If you want to remove that beta version of PSReadLine and use the 2.1.0 version of PSReadLine that's shipped with PowerShell 7.2, you can:

    1. run pwsh -noprofile -noninteractive to start pwsh without loading PSReadLine
    2. run Uninstall-Module -Name PSReadLine -RequiredVersion <2.2.0-beta1 or 2.2.0-beta2> -AllowPrerelease to remove the module. Or, you can manually remove that module folder.
  3. github-actions
    closed this as completedon Sep 23, 2025
  4. microsoft-github-policy-service
    removed
    Needs-Triage 🔍It's a new issue that core contributor team needs to triage.
    on Sep 23, 2025
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions