How to fix Error 126 on Windows 11

by

Why This Error Happens

Error 126 occurs when Windows attempts to load a DLL (Dynamic Link Library) or executable module that either doesn’t exist at the expected file path, is corrupted, or has missing dependencies of its own. This commonly happens after a botched software uninstall leaves orphaned registry entries pointing to deleted files, when a Windows Update overwrites or removes a shared system DLL, or when a 32-bit application tries to load a 64-bit module (or vice versa) due to architecture mismatch. It’s frequently seen when starting a Windows Service, running a legacy application, or launching third-party software that references outdated system files.

Step-by-Step Resolution Guide

  1. Identify the missing module: Open Event Viewer (eventvwr.msc), navigate to Windows Logs > Application or System, and find the Error 126 entry. Note the exact .dll or .exe file name mentioned in the error details.

  2. Search for the file location: Open File Explorer and search the system for the named module (e.g., msvcp140.dll). If it’s missing entirely, it likely needs to be reinstalled via the associated application or Visual C++ Redistributable package (download from Microsoft’s official site).

  3. Run System File Checker and DISM: Open Command Prompt as Administrator and run:

   sfc /scannow

If corruption is found and not fully repaired, follow up with:

   DISM /Online /Cleanup-Image /RestoreHealth

Restart your PC after completion.

  1. Check the PATH environment variable: Press Win + R, type sysdm.cpl, go to Advanced > Environment Variables. Under System Variables, verify the Path variable includes the correct directory where the module resides (e.g., C:\Windows\System32 or the application’s install folder).

  2. Reinstall the affected application: If the error is tied to a specific program, uninstall it completely via Settings > Apps > Installed Apps, delete any leftover folders in Program Files, then download and reinstall the latest version from the official source.

Alternative or Verification Steps

  • Verify the fix: Restart the affected service (via services.msc) or relaunch the application—Error 126 should no longer appear in Event Viewer.
  • Alternative fix: If the issue persists, use a system restore point from before the error started (rstrui.exe) to roll back potentially corrupted system changes.

Leave a Comment