Title: Fatal error : Call to undefined function mbstring_binary_safer_encoding()
Last modified: August 21, 2016

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# Fatal error : Call to undefined function mbstring_binary_safer_encoding()

 *  Resolved [Triskal](https://wordpress.org/support/users/triskal/)
 * (@triskal)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-mbstring_binary_safer_encoding/)
 * Since my update to 3.6 it is not possible to update or add any plugins.
    I can’t
   even update to WP 3.8
 * This is the message I receive:
 * Update WordPress
 * Downloading update from [http://wordpress.org/wordpress-3.8-new-bundled.zip…](http://wordpress.org/wordpress-3.8-new-bundled.zip…)
 * Unpacking the update…
 * Fatal error: Call to undefined function mbstring_binary_safe_encoding() in /data/
   sites/web/triskalcharmscom/www/wp-admin/includes/class-wp-filesystem-direct.php
   on line 62

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-mbstring_binary_safer_encoding/#post-4532110)
 * Try re-uploading all files & folders – **except** the root wp-config.php & .htaccess
   files and the the wp-content folder – from a **fresh** download of WordPress 
   3.6. Make sure that you delete the old copies of files & folder before uploading
   the new ones.
 *  Thread Starter [Triskal](https://wordpress.org/support/users/triskal/)
 * (@triskal)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-mbstring_binary_safer_encoding/#post-4532169)
 * Thank you esmi, after this message I googled the code and found another post 
   with the same problem (couldn’t find it through the search of the forum here).
   
   They referred to this page : [http://codex.wordpress.org/Updating_WordPress#Manual_Update](http://codex.wordpress.org/Updating_WordPress#Manual_Update)
 * I was afraid to re-install it manually but it worked and have 3.8 now!
    Thank
   you again
 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [12 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-mbstring_binary_safer_encoding/#post-4532290)
 * No problem 🙂

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Fatal error : Call to undefined function mbstring_binary_safer_encoding()’
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## Tags

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 2 participants
 * Last reply from: [esmi](https://wordpress.org/support/users/esmi/)
 * Last activity: [12 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-call-to-undefined-function-mbstring_binary_safer_encoding/#post-4532290)
 * Status: resolved

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