I keep telling WD that PH and kprocesshacker are not a threat and today WD guarantied PH itself and restore the registry related to replacing the task manager.
Is there is any way to prevent that(I keep restoring it and allowing it but WD from time to time removes it again)
There are similar reports on the github topic:
https://github.com/processhacker/proces ... issues/454
Looks like an update from Microsoft prevents users from whitelisting the binaries.
You should find an alternative product that doesn't delete your preferences. I would recommend Malwarebytes since they previously announced that Malwarebytes products will not detect Process Hacker as malicious or potentially unwanted: https://www.malwarebytes.com/