I currently have Alfresco Community 4.0c, I am able to upgrade it up to 4.0e without problem but when I want to upgrade to 4.2a, I am not able to connect either with my user or with the admin user.
I am on Windows server 2012 with mysql database and lucene index.
I think there has been a change in the database between these two versions. I have already tried several things found on google but nothing works.
Does anyone have the procedure to do this upgrade.