Hi,
Have you installed any antivirus or firewall applications recently? Let me know the error code in Windows update.
If so, please disable or temporarily remove it to see if the update can be download properly.
Also, you can try to download the standalone installer of the failed updates to see if we can install them separately.
Since this issue just happened recently, you can also try to restore the system back to the point when it worked fine to see if the updates can be downloaded and installed properly.
In addition, please check other steps in following FAQ:
[Forum FAQ] Common steps to start troubleshooting Windows Update issues