1. How to fix Update Failure Error “0x800f081f” on Windows 10 KB4054517?

2.  Open “Programs” and features by press “Windows + R” keys in order to open the run command box. Type: appwiz.cpl in the Search box and click “OK”  Now, you need to click turn Windows on or off features  After this, verify the.Net Framework 3.5 and then click “OK.” Method 1: Enable Net Framework 3.5 from Windows features:

3.  Choose download files from Windows update.  Here, let your windows to download and install Net Framework 3.5  Once the Framework is complete, restart your PC and then update Windows again.

4.  In the first step, download and run the Windows Update Troubleshooter.  After this, simply click “Next” at the first screen.  Follow the onscreen instructions to fix the problems with Windows update.  Try to install updates, once the repair is completed. Method 2: Another method that can be used to fix the Windows 10 update error 0x800f081f, is to run the Windows Update Troubleshooter.

5. Thank you