Title: [Plugin: Captcha] base64_decode() has been disabled
Last modified: August 20, 2016

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# [Plugin: Captcha] base64_decode() has been disabled

 *  Resolved [Xaliber](https://wordpress.org/support/users/xaliber/)
 * (@xaliber)
 * [14 years, 9 months ago](https://wordpress.org/support/topic/plugin-captcha-base64_decode-has-been-disabled/)
 * I’ve been using [Captcha plugin](http://wordpress.org/extend/plugins/captcha/)
   for a while, and it’s working good. Just suddenly today I noticed something weird
   with the login page.
 * On header, this shows up:
    `Warning: base64_decode() has been disabled for security
   reasons in /home/mahguy/public_html/wp-content/plugins/captcha/captcha.php`
 * I’ve not been changing anything lately, why does this suddenly appear?

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [s_ha_dum](https://wordpress.org/support/users/apljdi/)
 * (@apljdi)
 * [14 years, 9 months ago](https://wordpress.org/support/topic/plugin-captcha-base64_decode-has-been-disabled/#post-2169769)
 * Your host has disabled PHP’s base64_decode function. Its true that the function
   can be used for some malicious purposes but it is also used for quite a few legitimate
   purposes as well. I don’t think it is one I’d disable for security reasons.
 *  Thread Starter [Xaliber](https://wordpress.org/support/users/xaliber/)
 * (@xaliber)
 * [14 years, 9 months ago](https://wordpress.org/support/topic/plugin-captcha-base64_decode-has-been-disabled/#post-2170114)
 * Thanks. I’ve contacted the host, it is solved now.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘[Plugin: Captcha] base64_decode() has been disabled’ is closed to new
replies.

 * ![](https://s.w.org/plugins/geopattern-icon/captcha_92b6c9.svg)
 * [Captcha](https://wordpress.org/plugins/captcha/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/captcha/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/captcha/)
 * [Active Topics](https://wordpress.org/support/plugin/captcha/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/captcha/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/captcha/reviews/)

## Tags

 * [base64_decode](https://wordpress.org/support/topic-tag/base64_decode/)

 * 2 replies
 * 2 participants
 * Last reply from: [Xaliber](https://wordpress.org/support/users/xaliber/)
 * Last activity: [14 years, 9 months ago](https://wordpress.org/support/topic/plugin-captcha-base64_decode-has-been-disabled/#post-2170114)
 * Status: resolved