Thread:Project:Support desk/problems to migrate from Mediawiki 1.17.0 to 1.23.2 under Windows/reply (9)

Maybe Hartmut does not see an error message currently, but there must be one (and without it we won't be able to help in any way useful).

I just thought that error messages in the update script might get directed to /dev/null and I know this is being done in runJobs.php. However, I remember seeing error messages when running update.php myself, so I deactivated error messages by the script might not be the problem.

See How to debug for two lines of PHP code, which you should add to the bottom of LocalSettings.php:

error_reporting( -1 ); ini_set( 'display_errors', 1 );

And then try again...