Thread:Project:Support desk/Error Upgrade form 1.15 to 1.23.3/reply

Hello,

there is an error message:

which say, what went wrong :) The database user, with which you try to upgrade the database, have no right to created tables. So, the solution is to grant the right to the database, or use a user, who is permitted to create tables, for the upgrade process using Manual:$wgDBadminuser and Manual:$wgDBadminpassword.