Title: "Headers already sent" error message
Last modified: August 22, 2016

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# "Headers already sent" error message

 *  [Random Dev](https://wordpress.org/support/users/chumpchangewd/)
 * (@chumpchangewd)
 * [11 years, 7 months ago](https://wordpress.org/support/topic/headers-already-sent-error-message/)
 * > The plugin generated 757 characters of unexpected output during activation.
   > If you notice “headers already sent” messages, problems with syndication feeds
   > or other issues, try deactivating or removing this plugin.
 * This is the error message I’m getting when this plugin is enabled. (Although 
   the number of characters generated varies widely.) Can you help me troubleshoot
   this, please?
 * Thanks in advance.
 * [https://wordpress.org/plugins/gzip-ninja-speed-compression/](https://wordpress.org/plugins/gzip-ninja-speed-compression/)

Viewing 1 replies (of 1 total)

 *  Thread Starter [Random Dev](https://wordpress.org/support/users/chumpchangewd/)
 * (@chumpchangewd)
 * [11 years, 7 months ago](https://wordpress.org/support/topic/headers-already-sent-error-message/#post-5574669)
 * This may be fixed – I turned off “Protect System Files” and “Filter Long URL 
   Strings” in iThemes Security, and haven’t seen the error message since. :}

Viewing 1 replies (of 1 total)

The topic ‘"Headers already sent" error message’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/gzip-ninja-speed-compression.svg)
 * [GZip Ninja Speed Compression](https://wordpress.org/plugins/gzip-ninja-speed-compression/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/gzip-ninja-speed-compression/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/gzip-ninja-speed-compression/)
 * [Active Topics](https://wordpress.org/support/plugin/gzip-ninja-speed-compression/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/gzip-ninja-speed-compression/unresolved/)
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 * 1 reply
 * 1 participant
 * Last reply from: [Random Dev](https://wordpress.org/support/users/chumpchangewd/)
 * Last activity: [11 years, 7 months ago](https://wordpress.org/support/topic/headers-already-sent-error-message/#post-5574669)
 * Status: not resolved