This one may sort it.
https://support.microsoft.com/en-us/help/969052/how-to-restore-the-missing-windows-installer-cache-files-and-resolve-p
--please don't forget to Accept as answer if the reply is helpful--
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sql_engine_core_inst_loc.msi file missing in SQL server 2012 SP4 , So this is stopping the SP4 pack from installing.
if this sql_engine_core_inst_loc.msi file is important for installing SP4 ,if yes Please suggest.
Please provide your answer asap.
Thanks in Advance
This one may sort it.
https://support.microsoft.com/en-us/help/969052/how-to-restore-the-missing-windows-installer-cache-files-and-resolve-p
--please don't forget to Accept as answer if the reply is helpful--
@dhanalakshmi Arunachalam Thank you for reaching out.
Did the answer from @Anonymous work for you?
SQL Server and On-prem set up are not supported on Microsoft Q&A.
Please post this issue on MSDN where we have a dedicated forum for SQL Server.