Can windows defender offline search for rootkits be installed and queued from a thumb drive?

[hollerxv]

I had an attachment that came (supposedly) from a .tx.gov domain that when I opened it I found as opening a webpage with a ****.ru domain. So assuming the worst I scanned with three different commercial software packages (Eset, Trendmicro, Malwarebytes) which found nothing. Tried Microsoft safety security scanner as well as their Malicious Software Removal Tool and neither one of them would finish (over 60 hrs and 10 hrs respectively) despite continuing to see the file names change. Looking further the security updates are not installing for Defender (0x80070643) and the Windows Security st

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