The problem was fixed by turning on Microsoft Vulnerable Driver Blocklist. Dell support couldn't help so I spoke to Microsoft who say you can have the blocklist or the core isolation but not both. For some odd reason both had been turned off and this flagged the error but with the blocklist now on, the core isolation won't switch on. Maybe they should say that in the control panel? Anyway fixed now.
Hi, I am receiving errors that memory integrity is off in the Core Isolation settings of device security. When I click "review incompatible drivers", none are listed. Device manager is showing no conflicts. Latest Windows updates installed, have run Support assist but no updates pending. How do you resolve this? It's been doing it for several weeks and I think appeared after a Windows update? Device name XPS 15-9520Processor 12th Gen Intel Core i9-12900HK 2.50 GHzInstalled RAM 16.0 GB (15.7 GB usable)Device ID E9143334-3CDA-455E-877B-8FBB5268B3A0Product ID 00355-62662-32202-AAOEMSystem type 64-bit operating system, x64-based processorPen and touch No pen or touch input is available for this displayEdition Windows 11 ProVersion 22H2Installed on ‎21/‎09/‎2022OS build 22621.1778Experience Windows Feature Experience Pack 1000.22642.1000.0
XPS 15 9520, memory integrity switched off, no drivers