Jeff, I don’t know exactly which anti-virus program/corporate firewalls the company I work for uses (but I saw something called Trellix). The guys from IT and cyber security completely scanned my laptop, they opened for me a ticket (which I hope that this ticket to be closed without problems) and jumped on me after the TROJAN “virus” generated by the update I made to QSPICE. I can use LTspice without problems, so I thought that I can use also QSPICE without such problems.