Hi Ernesto,
I am Sumit, an Independent Advisor and a 2-Year Windows Insider MVP here to help.
The error code is a generic one:
0x80240034 WU_E_DOWNLOAD_FAILED Update failed to download.
The first step would be to try resetting Windows updates using an automatic script. See:
http://www.yourwindowsguide.com/2015/12/windows...
Make sure you run the script as an administrator.
Please let us know if you need any assistance.
Disclaimer:
This is a non-Microsoft website which would provide accurate and safe information. Watch out for ads on the site which are frequently classified as a PUP (Potentially Unwanted Products). There is no need to buy paid products to fix your computers as they do more harm than good sometimes.