microsoft.sharepoint.administration.spserver needs upgrade when you upgrade your SP farm

You get this message when you are trying to upgrade your SP farm by running the following command
stsadm.exe -o localupgradestatus

It displays the mess saying that upgrade required. Because there are still some features which did not get install, run the following command under bin directory

PSConfig.exe -cmd upgrade -inplace b2b -force -cmd applicationcontent -install -cmd installfeatures

Once done, refresh the page and upgrade status message should disappear.