Unable to start SQL Server Integration Services 12.0 service (SQL Server 2014) after upgrade to SQL Server 2019 and patched to CU4
I was able to successfully start the Integration Services 12.0 service after running a Repair using the SQL Server 2014 Installation Media. I then installed 2014 SP3 and 2014 SP3 CU4 to get it back to where it was before the upgrade, and all is well now.