Problem with 66a Error Windows Update Windows 7?

Don't Worry - I'm here to help you fix it!

Causes of the error:

66a Error Windows Update Windows 7
This error is usually caused by misconfigured system files.

So, from my experience, if you received a 66a Error Windows Update Windows 7 message then there is a 95% chance that your computer has registry problems.

These Windows errors are easy to repair. By downloading and running the registry repair tool Advanced System Repair, you can quickly and effectively fix this problem and prevent others from occuring. After fixing the registry, a quick scan with PC Health Advisor anti-malware tool will ensure that your PC has no more problems!

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Simply click the links below for your free download.

To Fix the problem you need to follow the 3 steps :

STEP 1:
    Choose the "Repair All" Button after the system has finished scanning.
STEP 2:

PC Health Advisor will optimize your PC by removing all traces of Adware, Spyware and Malware. Your PC will run much smoother after this process is completed.

Choose "Start New Scan" after installing

STEP 3:
Click the "Repair All" Button and follow directions on screen.
That's All!

Technical Description of System Error (for Experts only):

Microsoft Windows [Version 5.2.4630]
(C) Copyright 1985-2018 Microsoft Corp.

C:\Documents and Settings\Administrator>Advanced System Repair.exe

Windows 66a Error Windows Update Windows 7 may caused by some of the following errors



  • Windows Explorer Errors Javascript Errors
  • Hardware Malfunction
Error Symptom include:
Can not printing file
  • Blue ScreenIO errorShutdown problems
  • Http error
1) Modify The Application Data Path Inside The Registry

Click onto “Start” – search for “Regedit.exe”
Browse to the following path in RegEdit:
HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerUser Shell Folders
Double click the entry called “AppData”
Replace the original value with your own local profile path
Press OK
Restart your PC