SharePoint 2016 – The upgraded database schema doesn’t match the TargetSchema


I have not had much exposure to SharePoint 2016 yet and have only just applied my first cumulative update.  Unfortunately it didn’t go well and failed.  Here is what I pulled out of the log file:

ERR          Failed to upgrade SharePoint Products.
An exception of type Microsoft.SharePoint.PostSetupConfiguration.PostSetupConfigurationTaskException was thrown.  Additional exception information: The upgrade command is invalid or a failure has been encountered.

Upgrade [SPContentDatabase Name=WEBBWORLD_Content_Portal] failed. (EventID:an59t)

Exception: The upgraded database schema doesn't match the TargetSchema (EventID:an59t)


Upgrade Timer job is exiting due to exception: Microsoft.SharePoint.Upgrade.SPUpgradeException: The upgraded database schema doesn't match the TargetSchema

I tried running the upgrade command again but the same error occurred.

I got around this problem by upgrading the content databases using the Upgrade-SPContentDatabase cmdlet before running the upgrade:

Get-SPContentDatabase | Upgrade-SPContentDatabase

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