I am in the same boat: I am running the latest version of Windows 11 and vas running 1.24.7 version of Veracrypt. When i switched on Core Isolation and rebooted my machine it screwed it to the point I had to re-install. Of course, I then installed version 1.25.9 but am afraid to turn on core Isolation again. The thing that bugs me is the system disk is locked using Bitlocker and my use of Veracrypt is for my data folders I hold on removable media. Any insight/guidance appreciated