According to this Microsoft link, SQL Server 12.0.6372.1 requires any system with at least SQL 2014 SP3, so my predecessor installed it over SP3. Now the version is “2014 (SP3-CU-GDR) (KB4535288) – 12.0.6372.1”.
Since that security patch only fixes a specific problem with Reporting Services, and is smaller than the CU4 package, ISTM that I should also install the CU4 patch.
But how? Do I first uninstall KB4535288, then install KB4500181 (CU4) and then reinstall KB4535288, or can I just slap KB4500181 on top of KB4535288 (which seems like it would overwrite the KB4535288 files.
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Author: RonJohn