Title: Can’t Activate
Last modified: April 28, 2021

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# Can’t Activate

 *  Resolved [Andrzej Klasén](https://wordpress.org/support/users/bibeldans/)
 * (@bibeldans)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/cant-activate-73/)
 * Version 1.7.11
    Query Monitor: The plugin does not have a valid header. This 
   message was triggered by Core. Call stack: wp_die() wp-admin/plugins.php:65
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fcant-activate-73%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

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

 *  Plugin Author [methnen](https://wordpress.org/support/users/methnen/)
 * (@methnen)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/cant-activate-73/#post-14421576)
 * [@bibeldans](https://wordpress.org/support/users/bibeldans/) not sure why I didn’t
   get an alert on this but I didn’t.
 * I’m unable to reproduce any issues with activating the plugin.
 * Can you provide any additional information about how your install of WP is setup
   that might help?
 * What version of WP? What theme? Etc…?
 *  Plugin Author [methnen](https://wordpress.org/support/users/methnen/)
 * (@methnen)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/cant-activate-73/#post-14483186)
 * Closing for lack of reply from OP.

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

The topic ‘Can’t Activate’ is closed to new replies.

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## Tags

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

 * 2 replies
 * 2 participants
 * Last reply from: [methnen](https://wordpress.org/support/users/methnen/)
 * Last activity: [5 years, 2 months ago](https://wordpress.org/support/topic/cant-activate-73/#post-14483186)
 * Status: resolved