Windows System Error Code ERROR_426 can be a frustrating roadblock when trying to run applications or perform specific tasks on your computer. Don’t worry — in this step-by-step guide, we’ll walk you through what ERROR_426 means, why it happens, and how you can fix it quickly and efficiently.
What is Windows System Error Code ERROR_426?
Before diving into solutions, understanding the error is important. ERROR_426 corresponds to the message:
“Entry point not found.”
This error usually occurs when a program attempts to call a function or procedure in a dynamic-link library (DLL) that doesn’t exist or is incompatible with the current version of the DLL. Simply put, a required file or component is either missing, outdated, or corrupted.
Common Causes of ERROR_426
- A corrupted or missing DLL file
- Software incompatibilities after a Windows update
- Improper installation of a program
- Conflicts between software versions
- Malware or virus infection affecting DLLs or system files
Step-by-Step Guide to Fix ERROR_426 in Windows
Step 1: Restart Your Computer
Start simple. Sometimes, temporary glitches resolve themselves after a reboot. Save your work and restart your PC.
Step 2: Identify the Program Causing ERROR_426
Try to recall if the error appears when launching a specific application. This info will help focus your troubleshooting.
Step 3: Run System File Checker (SFC) Scan
Corrupted system files often trigger errors like ERROR_426.
- Press Windows Key + S, type
cmd. - Right-click Command Prompt and select Run as administrator.
-
In the command prompt, type:
sfc /scannow
- Press Enter and wait. This scan will check and attempt to repair corrupted system files.
Step 4: Run Deployment Image Servicing and Management (DISM) Tool
If SFC didn’t fix the problem, try DISM to repair the Windows system image:
- Open Command Prompt as an administrator again.
-
Type the following commands one at a time, pressing Enter after each:
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth - Wait for each operation to finish. This may take several minutes.
Step 5: Reinstall the Problematic Application
If ERROR_426 occurs only when using a certain program, try reinstalling it:
- Press Windows + I to open Settings.
- Go to Apps > Apps & Features.
- Find the app and select Uninstall.
- After uninstalling, download the latest version from the official website and reinstall.
Step 6: Update or Reinstall Required DLLs
Some programs depend on specific DLL files like msvcr100.dll or others. If you know which DLL causes issues:
- Search online for the official Microsoft Visual C++ Redistributable package or the missing DLL.
- Download and install the latest version.
- Avoid downloading DLLs from untrusted third-party sites, as these can be unsafe.
Step 7: Perform Windows Update
Keeping Windows updated ensures compatibility fixes:
- Press Windows + I, open Settings.
- Go to Update & Security > Windows Update.
- Click Check for updates and install all available updates.
- Restart your PC if prompted.
Step 8: Scan for Malware and Viruses
Malware can corrupt system files or DLLs:
- Use Windows Defender or a trusted antivirus.
- Perform a full system scan.
- Quarantine or remove any detected threats.
Step 9: Use System Restore to Roll Back Changes
If the error started recently:
- Search for Create a restore point in Windows Search.
- Click System Restore.
- Follow the prompts to select a restore point from before the issue started.
- Let Windows restore and reboot.
Step 10: Contact Software Support or Use Forums
If all else fails, reach out to the software developer’s support team or consult tech forums like Microsoft Community or Stack Overflow with details of your problem.
Final Thoughts
ERROR_426 can be a manageable hiccup once you know the right steps. Thorough troubleshooting — from repairing system files to updating your OS and applications — often resolves this error efficiently. Remember to back up your important data regularly to avoid data loss during troubleshooting.
If you followed this guide and still face issues, professional tech support might be the best next step.
Did this guide help you fix ERROR_426? Feel free to share your experience or ask questions below. We’re here to help!
Keywords: Windows Error 426, How to fix ERROR_426, Windows system error, DLL error fix, Windows troubleshooting, system file checker, DISM tool fix, application error
