Through Share or Alfresco Explorer Console
Login into either Share or Explorer Console Move your mouse towards left top corner and click on alfresco logo
From Share, you should get a popup that reveals the alfresco version
From Explorer console, it will display the version in the main body
Through Alfresco.log
Login into Alfresco server Go to alfresco installed path grep for “alfresco started” in alfresco.log
It’s easy once you find the way. Isn’t it?