Here's a simple registry hack you can use to delete the inbuilt Administrator Account in Windows 11/10. It's not something we recommend, but the option exists.

Modified Windows ISOs can be tempting when you want to get a cleaner Windows experience on your PC, but you should avoid them ...

Fix Virtual Disk Service error Delete is not allowed on the current boot, system, pagefile, crashdump or hibernation volume on Windows 11/10.