I'm trying to configure mother's personal computers (Win10) for remote work with server in FL.
When I connect from her work laptop - using provided Cisco AnyConnect VPN 2.5 on Win7 - I can still access non-work related secure sites (such as mail.yahoo.com). However I get
"Your connection is not private"
Attackers might be trying to steal your info from [site] NET::ERR_CERT_AUTHORITY_INVALID
Issuer: [Company name] SubCA [name]
Exprires: [in the future]
PEM encoded chain: 4 chunks of ---BEGIN/END CERTIFICATE---
when doing the same from her personal computers (tried on Chrome/Edge, Norton/Avast combos).
What is the reason for this difference and how can I fix it?