you may have noticed I've had some topics regarding my server functionality being problematic, weird things were happening like my server would frequently get disconnected from backend and kick all players out while I noticed connections of other servers were stable and not interrupted, sometimes my server wouldn't recognize any player's rank and unlocked stuff when it joined the server and kicked it out and this behavior once lasted for likely two days
after days of investigation I finally discovered NOD32 ANTIVIRUS HIPS feature was causing all of this mess, basically what this feature does is controlling accessibility of applications to registry, files and other applications
Hope it would help someone hosting servers who's also using NOD32 ANTIVIRUS
