Thread:Project:Support desk/Update fails with 'Error code: ERR CONTENT DECODING FAILED'

Hi,

I have a problem updating a rather old (v1.6.10) MW installation to v1.22. I don't have command line access to the webserver, so have to use the web updater.

All goes fine at first: I provide the update key, then 'Environmental checks and database connection are okay. At the 'Upgrade existing installation' stage, the updater confirms: "There are MediaWiki tables in this database. To upgrade them to MediaWiki 1.22.5, click Continue." ... but the update fails, with the following error message: Error code: ERR_CONTENT_DECODING_FAILED

I have tried 3 different browsers (Chrome, FF and Safari); same problem each time, so doesn't seem to be a browser issue.

A previous support post here suggested setting $wgDisableOutputCompression = true; in LocalSettings.php. This doesn't fix the problem for me.

Any suggestions? Thanks...

Del