I'm running the new trainer update that came out today and tested four options so far and they work ok - god mode, stealth, underwater, and super jump.
well the ones I'm curious about are unlimited mana and unlimited items as those were the ones that didn't work when I tried the trainer with the beta patch like a week ago. (I'm not putting this as an official 'trainers not working post' because I've been too busy to test after the patch was publicly released and cannot get into absolute specifics, I believe at the time though, god mode and stealth worked no problem so they may have left that untouched in the patch)
when i launch DH2 with steam and launch the DH2 Trainer the trainer automatically shuts down and cannot do an ALt-Tab to switch i have allowed webroot full access and given full user control overrides
🤔
Sounds like security software is kicking in.
Have you whitelisted the trainer, run it with admin rights and whitelisted the Temp folder (C:\Users\xxx(your PC username here)\AppData\Local\Temp?
If uncertain about the folder, watch what files the trainer writes into it and whitelist only them.