Title: Fatal error
Last modified: August 19, 2016

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# Fatal error

 *  [thebuildingdoctors](https://wordpress.org/support/users/thebuildingdoctors/)
 * (@thebuildingdoctors)
 * [15 years, 11 months ago](https://wordpress.org/support/topic/fatal-error-181/)
 * Help!
 * I was clicked the automatic upgrade from 2.9.2 to 3.0 and this error came up:
 * Fatal error: Call to undefined function is_multisite() in /home/content/d/t/h/
   dthomsen1/html/wp-includes/wp-db.php on line 505
 * I can’t log back in does anyone know how to fix this?
 * Thanks for your help,
 * Dan

Viewing 1 replies (of 1 total)

 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [15 years, 11 months ago](https://wordpress.org/support/topic/fatal-error-181/#post-1551316)
 * [http://wordpress.org/search/Call+to+undefined+function+is_multisite%28%29+?forums=1](http://wordpress.org/search/Call+to+undefined+function+is_multisite%28%29+?forums=1)

Viewing 1 replies (of 1 total)

The topic ‘Fatal error’ is closed to new replies.

## Tags

 * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/)

 * In: [Installing WordPress](https://wordpress.org/support/forum/installation/)
 * 1 reply
 * 2 participants
 * Last reply from: [esmi](https://wordpress.org/support/users/esmi/)
 * Last activity: [15 years, 11 months ago](https://wordpress.org/support/topic/fatal-error-181/#post-1551316)
 * Status: not resolved

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