why cant i activate (no screen lock)

[AMEEROTHEHERO]

Hey people,
Today I update my M8 to Lolipop version and now when i go to security and go to remove lock screen password I can't!
The first 2 option are unavailable(Lock screen and no lock screen) and it says "it is disabled by administrator encryption policy or credential..."
Help plss
Anyone has the same ploblem?
Help
Thanks

 

[MastermindPrototype]

Well, I am not sure for this.
But I think you must decrypt it.