Microsoft fixes the bad cumulative update for SQL Server 2016 SP2

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Overnight, Microsoft released KB 4458621, the patch that’s supposed to fix the errors in Patch Tuesday’s KB 4293807. Per the KB article: This update i
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Well! The update just removed a few undocumented trace flags that were set by the botched update. Removing trace flags takes just a one-liner, and skilled DBA’s did on their own.

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You never know with MS. E.g., they’ve released MSSQL ISOs with “slipstreamed” SP that did not install any SP at all. https://support.microsoft.com/en-us/help/2783963/sql-server-2012-with-sp1-slipstream-iso-images-do-not-install-sp1

Later on, they’ve released ISOs with SP2 “slipstreamed” that – surprise surprise – did not install any SP at all, again. https://support.microsoft.com/en-us/help/2984316/sql-server-2012-with-sp2-slipstream-iso-images-do-not-install-the-sql

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Correct, but in this case, they just messed with trace flags.

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They also had to re-release the SQL 2016 SP1 GDR fix for CVE-2018-8273. This is the SP1 build without any Cumulative Updates. See https://blogs.msdn.microsoft.com/sqlreleaseservices/issue-with-security-update-for-the-remote-code-execution-vulnerability-in-sql-server-2016-sp1-gdr-august-14-2018/

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