Title: Error on plugin activation on multisite
Last modified: October 21, 2020

---

# Error on plugin activation on multisite

 *  Resolved [jstallard](https://wordpress.org/support/users/jstallard/)
 * (@jstallard)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/error-on-plugin-activation-on-multisite/)
 * Hiya
 * I’d love to have install this plugin on my multisite. However, I get this error
   when I try to activate it:
 * The plugin does not have a valid header.
 * Thanks!
    Jackie

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

 *  Plugin Author [Aaron](https://wordpress.org/support/users/aaron13100/)
 * (@aaron13100)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/error-on-plugin-activation-on-multisite/#post-13560274)
 * I did a minimal test with a multisite setup and it worked. Some google results
   suggest that retrying from the plugins page may work and that it may be a cache
   issue.
 * Please try clearing any cache that may be active and retry a few times.
 *  Plugin Author [Aaron](https://wordpress.org/support/users/aaron13100/)
 * (@aaron13100)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/error-on-plugin-activation-on-multisite/#post-13560275)
 * Also the plugin has otherwise never been tested with multisite that I can recall
   so… be warned.
 *  Thread Starter [jstallard](https://wordpress.org/support/users/jstallard/)
 * (@jstallard)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/error-on-plugin-activation-on-multisite/#post-13560305)
 * Hi Aaron
 * Thanks for your quick replies! Clearing the cache fixed it.
 * It seems to be working nicely.
 * Thanks!
    Jackie

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

The topic ‘Error on plugin activation on multisite’ is closed to new replies.

 * ![](https://ps.w.org/404-solution/assets/icon-256x256.jpg?rev=1610739)
 * [404 Solution](https://wordpress.org/plugins/404-solution/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/404-solution/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/404-solution/)
 * [Active Topics](https://wordpress.org/support/plugin/404-solution/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/404-solution/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/404-solution/reviews/)

## Tags

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

 * 3 replies
 * 2 participants
 * Last reply from: [jstallard](https://wordpress.org/support/users/jstallard/)
 * Last activity: [5 years, 7 months ago](https://wordpress.org/support/topic/error-on-plugin-activation-on-multisite/#post-13560305)
 * Status: resolved