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Docker Desktop WSL2 Error — Backend Startup and Container Failures on Windows

Errorapplication

Overview

Fix Docker Desktop WSL2 backend errors including 'WSL 2 installation is incomplete', Docker daemon not starting, and container network failures.

Key Details

  • Docker Desktop for Windows uses WSL 2 (Windows Subsystem for Linux) as its backend since version 3.x
  • WSL 2 requires Windows 10 version 2004+ or Windows 11 with virtualization enabled in BIOS
  • Common errors include 'WSL 2 installation is incomplete' and 'Docker Desktop - Unexpected WSL error'
  • The Docker daemon inside WSL 2 may fail to start due to memory limits or corrupt distributions
  • Hyper-V and Virtual Machine Platform Windows features must be enabled

Common Causes

  • WSL 2 Linux kernel not installed or outdated — needs manual update from Microsoft
  • Virtualization (VT-x/AMD-V) disabled in BIOS/UEFI settings
  • Virtual Machine Platform or Windows Subsystem for Linux Windows features not enabled
  • Docker Desktop WSL 2 distribution corrupted and needs reset

Steps

  1. 1Update WSL kernel: run 'wsl --update' in PowerShell as administrator
  2. 2Enable required features: 'dism /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart' and same for Microsoft-Windows-Subsystem-Linux
  3. 3Verify virtualization is enabled: open Task Manager > Performance > CPU > check 'Virtualization: Enabled'
  4. 4Reset Docker Desktop: Settings > Troubleshoot > Reset to factory defaults (warning: removes all containers and images)
  5. 5If WSL distro is corrupt: 'wsl --unregister docker-desktop' then restart Docker Desktop to recreate it

Tags

dockerwsl2desktopvirtualizationcontainers

More in Application

windows-C0000005-access-violationWindows Error 0xC0000005 — Access Violation
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windows-C0000142-application-init-failedWindows Error 0xC0000142 — Application Init Failed
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windows-SxS-Error-side-by-side-configuration-errorWindows Error SxS-Error — Side-by-Side Configuration Error
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windows-DLL-Missing-dll-not-foundWindows Error DLL-Missing — DLL Not Found
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windows-app-runtime-r6025Windows Runtime Error R6025 — Pure Virtual Function Call
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Frequently Asked Questions

Not directly. Docker Desktop uses WSL 2 which requires Virtual Machine Platform. Hyper-V is separate but enabling it does not conflict. WSL 2 is the recommended and default backend.