Cofiniteness over Noetherian complete local rings

In this paper we prove the following generalization of a result of Hartshorne: Let $(S,\text{n})$ be a regular local ring of dimension $4$. Assume that $x,y,u,v$ is a regular system of parameters for $S$ and $a:=xu+yv$. Then for each finitely generated $S$-module $N$ with $\text{Supp}N=V(aS)$ the socle of $H_{(u,v)S}^2(N)$ is infinite dimensional. Also, using this result, for any commutative Noetherian complete local ring $(R,\text{m})$, we characterize the class of all ideals $I$ of $R$ with the property that, for every finitely generated $R$-module $M$, the local cohomology modules $H_I^i(M)$ are $I$-cofinite for all $i\ge 0$.