Compile Error: DML operation DELETE not allowed on User

Question

I write apex class for Delete the user records but I got an error that error shows like this

Error: Compile Error: DML operation DELETE not allowed on User at line 28 column 7 how to solve this error please let me know.

Answer 1

The user object isn't deletable, i.e. to "delete" a user and regain a license to use on another user you have to cripple the user by setting isActive to false. This will make its license to go back to the pool.