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[Fixed] Windows Update Error Code 0x800b0109

Error Code 0x800B0109: If you receive an error message stating some window update files are not signed correctly, installer encountered an error 0x800b0109 , this means the Windows service is not able to verify. Windows Update Error Code 0x800b0109 is common for all the Windows Operating systems when you try to install the windows updates.

error 0x800b0109 usually appears when Windows 11 , Windows 10 or Windows 7 update system is broken or there is network related issues. In this article, we will provide you with the solutions that will help you fix this Windows Update Error code 0x800b0109.

Error Code 0x800b0109

Reasons for the Error code 0x800b0109

Usual causes for this error code: (0x800b0109)  are communication failure over the Internet with Microsoft update servers. Firstly, I will suggest you to do Windows Troubleshoot for Error Code 0x800b0109. As a result, disable the proxy Internet connection and try again to install  0x800b0109 windows 7 /8 and Windows 10/11

How a proxy connection can be disabled?

  1. First, open Internet Explorer and click on Tools->Internet Options
    Error Code 0x800B0109
  2. Then go to Connections and LAN Settings
    Error Code 0x800B0109
  3. Simultaneously, check and make sure the Proxy server is disabled

Similarly, second case would be with your Antivirus. There are proxy settings enabled under your settings of any security programs that you may be using. If you cannot find the procedure to stop it, you can ask our techs on chat support to guide you.

we suggest you to chat with our experts.

Repair and Solutions for Error Code 0x800b0109

There are failed windows update services that could also cause you this Error Code 0x800b0109 while updating Windows.

Try the below steps to repair Windows services

Repairing Windows update services is not like how you repair any windows application from the add/remove office programs. There is a procedure that you need to follow through command lines. This requires the user to have administrator rights on his computer. As per the Microsoft set of rules defined on various Knowledge base articles, the steps are simplified as mentioned here to reset your windows update services.

NOTE: Following these steps carefully will not make any changes to your personal data or programs. It will only reset the Windows update services.

  1. Firstly, open command prompt as administrator by right clicking on it.
  2. Next go to c:\windows\
  3. After that, Rename software distribution folder to old
  4. For Instance in some cases, it may not happen until you stop the windows update services
  5. To stop that, you can run a command line “Net stop wuauserv” and hit enter
  6. Followed by you can try to rename this folder software distribution to old
  7. Then you can restart the windows update service
  8. Use this command “Net start wuauserv” and hit enter
  9. Finally, check for updates now

SFC Scan to Fix Error Code 0x800b0109

SFC SCAN is the command line that we use to do this process. I will explain you the steps in detail on how to perform this scan.

Consequently, by following this process you will get a positive result stating that all the issues are resolved and the flip side negative result could be that your windows is corrupted.

Final Solution

In this case, you should actually work hard to reinstall windows operating system. Therefore, backing up data is the foremost important thing in order to make sure you won’t lose your personal files.

In Conclusion

If you still have a problem in following this method, then we suggest you to choose a Technical Support from us to help you better. We give you assurance about your money and the service. If you like to see the procedure for a paid support, you may ask the Tech available online here on this page.

More details for this method at

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