Our CCM and Unity systems are very under patched. How do I start to know what patches need installation and where to begin? Are there any 'catch-all' patches to bring systems up to date?
CCM System is 4.0(1)sr2a, Admin is 4.0(0.333). Server is W2K SP4
Unity is 4.0(3). SQL i think is 2000, Exchange is 2000. Server is W2K SP3.