I recently applied OCT 2015 CU to my test environment, which consists of 1 App and 1 WFE server. After running the upgrade and restarting the servers, I tried to run the PS config through UI on the App server. It failed multiple times, but once i ran it through the Management Shell, everything was successful. However, when I checked the Upgrade status on servers it shows App server still needs upgrade whereas WFE doesn't require update.
What should i do to get rid of the Status? I even ran the PS config once again on App server which was successful.