What was the name of the malware detection that Windows Defender caught?
If as you say Kaspersky didn't catch it, help the Kaspersky community out by submitting the malware sample to Kaspersky for analysis.
Malwarebytes found 37 PUP's that Kaspersky didn't find
Had I not had all the problems trying to install 1903 - They'd still be on my system
In the last week I have used DISM, SFC, WU reset,, Windows Repair, System Restore, diskchk & Malwarebytes.
To suggest we uninstall the antivirus to update Windows is actually laughable
Pff