PsConfig step by step /Configuration Wizard. “Upgrade Available” vs “Upgrade required”
The "Upgrade available" simply means that there is a newer patch available at the SharePoint Updates page than the one installed on your SharePoint farm. We checked the Farm version and made sure its the latest available version. Getting "Upgrade Required" error message in SharePoint 2013? Well, Ideally, We have to run the SharePoint Products Configuration Wizard on the server(s) right after installing the service pack/patches. In Windows Server 2012, SharePoint updates are part of Windows Server Update. It installs patches but never runs Products configuration wizard automatically! You still have to run psconfig wizard to complete patching! ---------------------------------------------------- https://www.sharepointdiary.com/2014/02/upgrade-available-server-status-after-sharepoint-patching.html https://www.sharepointdiary.com/2015/03/upgrade-required-status-in-sharepoint-central-admininstration.html https://blog.stefan-gossner.com/2015/08/20/why-i-prefer-psconfigui