Issue PHP doesnt Execute .exe files

[REOLDEV]

Hey there,
i have a huge Problem and im trying to fix it since yesterday.
The Problem: I have a PHP Script that calls an .exe file to download some stuff... But the Script doesnt get called.
I tried a lot of PHP Methods, disabled Mod_Security and so on. I can use other stuff like "dir" and so on.
Im Using:
Plesk Obsidian Web Admin 18.0.29 Update 1
Windows Server 2019 Datacenter
PHP 7.4.8
Location of PHP Script: E:\Inetpub\vhosts\secret.tld\alsoA.secret.tld\secretfolder\verySecret.php
Location of Executables: E:\SecretLib\SecretFileLocation\SecretExe.exe

Help