Title: WILL NOT ACTIVATE
Last modified: January 23, 2017

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# WILL NOT ACTIVATE

 *  Resolved [lancem631](https://wordpress.org/support/users/lancem631/)
 * (@lancem631)
 * [9 years, 3 months ago](https://wordpress.org/support/topic/will-not-activate-14/)
 * The plugin does not have a valid header is the message when trying to activate
   version 1.6.12 on WP 4.7.1

Viewing 6 replies - 1 through 6 (of 6 total)

 *  Plugin Contributor [joelworsham](https://wordpress.org/support/users/joelworsham/)
 * (@joelworsham)
 * [9 years, 3 months ago](https://wordpress.org/support/topic/will-not-activate-14/#post-8688545)
 * Hmmm, this is odd. Sorry for this issue. I double checked and tested on the latest
   version of WordPress and was able to update without any errors.
 * How are you attempting to update the plugin? Are you updating via the “update”
   button within the WordPress admin? Or are you uploading the files via FTP?
 *  [erich199](https://wordpress.org/support/users/erich199/)
 * (@erich199)
 * [9 years, 3 months ago](https://wordpress.org/support/topic/will-not-activate-14/#post-8717204)
 * [@joelworsham](https://wordpress.org/support/users/joelworsham/),
 * I just downloaded and installed this on my multisite and tried to “network activate”
   and get the same error. The wordpress version is 4.7.2
 *  [erich199](https://wordpress.org/support/users/erich199/)
 * (@erich199)
 * [9 years, 3 months ago](https://wordpress.org/support/topic/will-not-activate-14/#post-8717242)
 * Seems like it happens only after initial install. I went to the plugins link 
   and hit activate and it worked just fine. Weird.
 *  [fulviods](https://wordpress.org/support/users/fulviods/)
 * (@fulviods)
 * [9 years, 3 months ago](https://wordpress.org/support/topic/will-not-activate-14/#post-8799898)
 * I have the same problem… when installing it said that “The plugin does not have
   a valid header ”
 * I go back to plugin pages and then i can activate it
 *  Thread Starter [lancem631](https://wordpress.org/support/users/lancem631/)
 * (@lancem631)
 * [9 years, 3 months ago](https://wordpress.org/support/topic/will-not-activate-14/#post-8800092)
 * Version 1.6.12 plugin with WP 4.7.2 is working okay. Lost track of time over 
   2-weeks and cannot remember what the resolution was. Plugin is providing a great
   experience.
 *  Plugin Contributor [joelworsham](https://wordpress.org/support/users/joelworsham/)
 * (@joelworsham)
 * [9 years, 3 months ago](https://wordpress.org/support/topic/will-not-activate-14/#post-8804446)
 * Unfortunately I have no resolution to this. I cannot reproduce this error and
   it seems to be mostly uncommon.
 * After doing some research I discovered it is probably related to some caching
   involved on the server itself. This article explains more thoroughly: [https://scotty-t.com/2011/03/28/fix-for-the-plugin-does-not-have-a-valid-header/](https://scotty-t.com/2011/03/28/fix-for-the-plugin-does-not-have-a-valid-header/)
 * At the very least, it does seem to work fine, as you said, by going to the plugins
   page and activating there.
 * Sorry for any inconveniences.

Viewing 6 replies - 1 through 6 (of 6 total)

The topic ‘WILL NOT ACTIVATE’ is closed to new replies.

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 * 6 replies
 * 4 participants
 * Last reply from: [joelworsham](https://wordpress.org/support/users/joelworsham/)
 * Last activity: [9 years, 3 months ago](https://wordpress.org/support/topic/will-not-activate-14/#post-8804446)
 * Status: resolved