When I try to replace my water filter with either a new filter, the old filter or bypass plug...... water leaks around the filter. O-rings seems ok. What could cause leak? I replaced water valve with another one which I think was good but still leaks at water filter

Yes, I resolved. When filter was out you can see that the part it screws into has cracked. To prove it, take filter out plug hole and hit water dispenser and you can see it leak where the crack is.

I bought that part and replaced it myself. Quite easy to do and part is around $50.