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I tried going ahead and recreating the Performance key in RegEdit, and that allowed me to pass the first error message, but now I get another error message:įile C:\Program Files\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQL\Binn\DllTmp64\sqlagentctr110.dll could not be copied to file path C:\Windows\system32\. There seems to be no error code details available for this error. Download now Connect with user groups and data community resources related to SQL Server, Azure Data, and diversity and inclusion. Error Code: 0x851A0020.ĭoing a Google search doesn't result in any answers. SQL Server 2019 Express is a free edition of SQL Server, ideal for development and production for desktop, web, and small server applications. The registry key System\CurrentControlSet\Services\MSSQLSERVER\Performance is missing.
![sql server 2016 express data engine install failed sql server 2016 express data engine install failed](https://i.stack.imgur.com/NRlEf.png)
Keep in mind that all the pre-update checks to make sure SQL Server 2012 SP2 can be installed passed before I went onto the installation, and no users are active in the database during the installation.Įrror installing SQL Server Database Engine Service Instance Features. I received the same error message during installation. I tried downloading the SQL Server 2012 Service Pack 2 package from Microsoft's website for manual installation, and I tried installing it that way. I haven't tried uninstalling it, as it is a pain to set it up again. I do have have SQL Toolbelt installed on top of SQL Server 2012 SP1, so I don't know if this could be the problem preventing the update.
![sql server 2016 express data engine install failed sql server 2016 express data engine install failed](https://i.stack.imgur.com/stPTu.jpg)
#Sql server 2016 express data engine install failed update
I tried disabling the SQL Agent and just making sure nothing is running before the update process, that didn't help either. I tried restarting the server, and re installing, same problem. I am trying to install SP2, but when I tried through Windows Update, it would come up with an error code of 0x851A0020. I'm having an issue installing the latest hotfix/update for SQL Server 2012 SP1.