My environment two dcs, one 2012R2 and one 2008R2, both with .net 4.7.1 installed. Domain level at 2008R2. My exchange is at CU15 with .net 4.5.2 installed. Is there a schema update? Do I haveto run domain prep? Is the steps, install .net 4.7.1 then run CU21? After installing 4.7.1 should I reboot first or just run the CU update immediately after?
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