Installing Windows 11 24H2 might mean binning that old NAS
Briefly

Windows 11 24H2 tightens security with required SMB signing on all connections and disabling Guest fallback on Pro edition, enhancing network protection.
Disabling Guest prevents unauthorized access, protecting devices from connecting to malicious servers without credentials, minimizing ransomware risks.
SMB signing and Guest lockdown are significant security enhancements after years of availability, aiming to secure billions of devices using Windows-based network connections.
Read at Theregister
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