Unable to upgrade the LocalDB Sql Express database Running during AADconnect upgrade

I was recently trying to Upgrade the AADconnect server to stop the high 100% CPU issues

After running the MSI . then running AzureADConnect.exe , the upgrade came up with the error

Unable to upgrade the LocalDB Sql Express database Running

I went to the event log and found the error :

Error installing msi package ‘SqlLocalDB.msi’. Full log is available at ‘C:\ProgramData\AADConnect\SqlLocalDB_Upgrade-20180813-094321.log’.

I checked through the Log and there seemed to be lots of 1603 errors

I ran the SQL Setup ( C:\Program Files\Microsoft Azure Active Directory Connect\SetupFiles\SqlLocalDB.msi ) manually and it asked if I wanted to upgrade my LocalDB from 2008 to 2012 which I said yes to 

The installer then came up with the error SQL Server 2012 Express LocalDB

Could not open key: UNKNOWN\Components\. Verify that you have sufficient access to that key, or contact your support personnel.

I ran through the workaround 1 from this guide


And then the SqlLocalDB.msi finished successfully , I was then able to run through the AzureADConnect.exe upgrade

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Tags: 1402, 1603, aadconnect, LocalDB, SqlLocalDB.msi, unable to upgrade

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