I know Mega Byte already found a code but it didn't work for me so I found another one using CE and it's works perfect for me
01238C20
Freeze it, change value to 0 and you're done.
They won't be blocked they just disappear real fast.
I haven't tried it on other PC's so idk if it will work for you but if you want to find one for yourself here's how.
Go to a place where there's no people or mobs.
When the message comes up search for value of 1
when it disappears search for 0 and so on eventually you'll end up with few addresses wait till the message comes up or disappears and if one of the addresses value changes to 1 or 0 then it's the right one.