Microsoft has released cumulative update 5 for Exchange 2013.
As usual, the CUs are full builds. Hence, you don’t have to install 2013 SP1 (which is also CU4) first. This update also needs an AD schema update and hence a proper plan should be in place for medium to large organizations where the AD schema changes will have to be tested thoroughly & approved by various teams before giving the go ahead for the CU5 deployment.
Download the Cumulative Update 5 here.
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