Hello,
Thank you for posting your query on Microsoft Community.
The Error 0x800F081F means that a file needed by Windows Update is damaged or missing.
I suggest you to Reset the Windows Components
and check if it resolves the issue.
Reset the BITS (Background Intelligent Transfer Services) service, the Windows Update service, and the Cryptographic service which enables the detection, download and installation of the Windows Updates. Follow below steps:
1. Right click on Start button and select
Command prompt (Admin).
2. Stop the BITS, Cryptographic, MSI Installer
and the Windows Update Services. To do this, type the following commands at a command prompt. Press the "ENTER" key after you type each command.
net stop wuauserv
net stop cryptsvc
net stop bits
net stop msiserver
3. Rename the software distribution folders
backup copies. To do this, at a command prompt, type the following commands. Make sure that you press Enter after you type each command.
Ren %systemroot%\SoftwareDistributionSoftwareDistribution.bak
Ren %systemroot%\system32\catroot2 catroot2.bak
4. Now, let’s restart the BITS, Cryptographic, MSI Installer and the
Windows Update Services. Typethe following commands in the Command Prompt for this. Press the
ENTER key after you type each command.
net start wuauserv
net start cryptsvc
net start bits
net start msiserver
5. Type Exit in the Command Prompt to close it and then restart the computer.
6. Check to see if the issue is resolved. If not, restart the system and try to install the update.
Hope this helps. If the issue remains unresolved, please get back to us and we would be happy to help.