What do you mean with db.properties files?
Hello,
Sorry its file which will be same in new ePO and Agent Handler.
Regarding you question:
can I connect the old agent handlers (4.6.6) to the new ePO 5.1 server? Nope you can't connect as both should be same version.
Or do I need to update them first.... Or what is the best way to do this? Update ePO first than install agent handler package on your old AH server
Does MS SQL Server 2012 installs automaticly when installing ePO 5.1?
The SQL application does not load with ePO 5.1. You will need to make sure this is in place first. When you install ePO 5.1 it will ask you for SQL related information so that it can create the ePO database for you.
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