Update 1709 is failed with error code 0x80240034

Ciao,

I'm Ugo, a Microsoft Independent Advisor willing to help other Microsoft customers.

Regarding your question, you can try following one of the methods described below:

1) Below a list of general advices for your situation:

https://www.lifewire.com/when-windows-update-ge...

https://www.yourwindowsguide.com/2017/10/upgrad...

2) Alternatively, you can try the below:

a) Start –> All Programs –> Accessories –> right click on Command Prompt -> select "Run as Administrator". Type net stop wuauserv to stop Windows Update Service.

Wait till you get : The windows update service was stopped successfully. " (DO NOT CLOSE COMMAND PROMPT).

b) - Go to C:\Windows\SoftwareDistribution
- Delete all files in "DataStore" folder
- Delete all files in "Download" folder.

c) In the Command prompt window, type net start wuauserv to start Windows Update service.

Restart your computer and try to get update again (this should fix the issue permanently).

3) Reset Windows Update with a script
https://www.yourwindowsguide.com/2015/12/window...


Other 5 additional tips can be found here:

https://windows10.help/blogs/entry/23-troublesh...

Please let me know if this helped somehow.

Ciao
Ugo

Sadly ,none of the solutions (including number 2 ) fixed the problem. Still computer can not install the update and finishes with an error messege and roll backs the changes it made. 

Any other possible solution?

Sadly ,none of the solutions (including number 2 ) fixed the problem. Still computer can not install the update and finishes with an error messege and roll backs the changes it made. 

Any other possible solution?

Unfortunately this seems to be a known issue and Microsoft is working on a solution: standard methods we tried already failed, so the only thing we can do at this moment is hiding the update request. The update that most probably is causing this issue is KB4056892.

https://support.microsoft.com/en-us/help/3183922/how-to-temporarily-prevent-a-windows-update-from-reinstalling-in-windo

Please try to hide this update and see if other updates are able to install consequently.

Please let me know if this works.