Apparently, one of the Windows Update related to Windows Defender is broken. If you encounters this issue, you can fix it using this guide.
The first 2 steps are to verify the same error we're talking about. Otherwise, you might run into trouble.
Windows Update
by START > type "Windows Update" > select
.8050800C
. It is shown in Step 1.View update history
" on the sidebar. (P/S: Sorry, forgotten to highlight it.)KB915597
. It is shown in Step 2.If all are correct, then proceed to next step. Otherwise, you should stop now as we are not on the same page.
Go to microsoft official site at https://www.microsoft.com/en-us/wdsi/definitions and download the latest definition. Please make sure you download the correct:
Once done, install it and then restart the computer as requested by the Windows Update.
Once you're back, bring up your Windows Update
and Check for update
. You should not see the same error again.
That's all about fixing the update bug for Microsoft Defender in Windows Update.