Title: Call to undefined function update_core() Last modified: August 19, 2016 --- # Call to undefined function update_core() * [astopy](https://wordpress.org/support/users/astopy/) * (@astopy) * [16 years, 10 months ago](https://wordpress.org/support/topic/call-to-undefined-function-update_core/) * I get the following when trying to perform an automatic upgrade: * > Downloading update from [http://wordpress.org/wordpress-2.8.2.zip](http://wordpress.org/wordpress-2.8.2.zip) > Unpacking the core update > Fatal error: Call to undefined function update_core() in /home/adam/web/public/ > blog/wp-admin/includes/update.php on line 475 * I can’t find any mention of anyone else having this problem; could it be something specific to OpenSolaris? Viewing 2 replies - 1 through 2 (of 2 total) * [darkman82](https://wordpress.org/support/users/darkman82/) * (@darkman82) * [16 years, 8 months ago](https://wordpress.org/support/topic/call-to-undefined-function-update_core/#post-1158252) * Does plugin installation/upgrade work? * [ben_griffith](https://wordpress.org/support/users/ben_griffith/) * (@ben_griffith) * [16 years, 8 months ago](https://wordpress.org/support/topic/call-to-undefined-function-update_core/#post-1158253) * read my entry: * [http://wordpress.org/support/topic/314112?replies=2](http://wordpress.org/support/topic/314112?replies=2) * I also have trouble with dubious core files. Viewing 2 replies - 1 through 2 (of 2 total) The topic ‘Call to undefined function update_core()’ is closed to new replies. * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 2 replies * 3 participants * Last reply from: [ben_griffith](https://wordpress.org/support/users/ben_griffith/) * Last activity: [16 years, 8 months ago](https://wordpress.org/support/topic/call-to-undefined-function-update_core/#post-1158253) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics