Nodejs Server Throws "updgrade Required" On Loading Pages Even After Being Updated To Latest Npm Version

I have a node project developed with NodeJS version 5.4.x and NPM version with 3.3.12 on windows. When i tried to run the project after a Quite sometime now it throws 'Upgrade Requ

Solution 1:

The issue happened because of the installation conflict between non-administrative and administrative server instance. The installation was done with administrator and somehow my instance was always working on non-administrative instance. With admin rights I'm able to resolve this.