Trainer #3 for Steam is running fine for me,
Older trainer template so along with the usual exclusion you may need to add a few more.
Extract trainer and make sure trainer/launcher/editor is in a folder excluded from virus scans. Empty quarantine folder if needed or set anything trainer related (paths and EXE's) to ALLOW. Disable any Live/Active/Real-Time tools which may trigger false positives in security software which may terminate the game/trainer when it's activated or options used.
may need to be added to exclusions as well. Run trainer as admin, read the instructions and try again.
Anti-virus help page. Link[Edited by CyPHeR369, 10/15/2020 2:18:33 PM]