Fix Error 126 in Windows 7, Vista and XP With Step-by-Step Solution

Error 126 mostly occurs in Windows 7, Vista and XP during the installation of a computer program. It’s a very common problem as many PC users have reported this issue on computer help forums.

Error code 126 normally appears due to following reasons:

  • -- When the DLL file related to the service is corrupt
  • -- When the DLL file related to service is missing

Compatible with Windows 7, Vista and Windows XP

Disable Firewall Protection

If Firewall is blocking the installation components of the program it may prevent us from installing it and as a result of which we may encounter error 126 in our Windows 7, Vista or XP. To fix this problem you need to disable the firewall protection before starting the installation procedure.

Download and Replace the File

In case any DLL file is corrupt or missing, you are required to download and place the DLL file in Windows 7 System32 folder to fix error 126. There will be an error message relating to missing dll file. You can note this file name and find the said file on web to download it on your computer.

Corrupt Setup File

Error 126 may occur if the program setup file is corrupt. To fix this issue you need to download a new setup file and try to install it.

Uninstall Recently Installed Microsoft Updates

Sometimes installing latest Microsoft updates may result in several errors. Error 126 is one of them. If this is the case you must uninstall the recently installed updates to get rid of the problem.

To do so follow the steps given below:

  • -- Click on Start menu
  • -- Open Control Panel
  • -- Click on Programs and Features
  • -- Click on View Installed Updates
  • -- Locate and click on update which you wish to uninstall
  • -- Follow the instructions
  • -- Restart your computer

Clean Windows 7 Registry

n most cases the corruption in Windows 7 registry cause error 126 in Windows 7, Vista or XP. To fix this issue you are required to fix registry errors. Download Here: Registry Scan.

If you don’t know how to remove errors from Windows 7 registry manually we recommend you not to play with registry and instead install Registry Cleaner tool to fix error 126 below:


Compatible with Windows 7, Vista and Windows XP