Title: Invalid API key
Last modified: August 21, 2016

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# Invalid API key

 *  Resolved [chrississons](https://wordpress.org/support/users/chrississons/)
 * (@chrississons)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/invalid-api-key-2/)
 * I’ve just downloaded this plug-in and entered an API key. I get this error message:
 * “MailChimp Error: Invalid Mailchimp API Key: fe6deac2ba6a558bd59cc6dbf01 . You
   are accessing the wrong datacenter – your client library may not properly support
   our datacenter mapping scheme.”
 * I’ll delete the API and start again once I understand this message. Can you help?
 * [https://wordpress.org/plugins/mailchimp-for-wp/](https://wordpress.org/plugins/mailchimp-for-wp/)

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Author [Danny van Kooten](https://wordpress.org/support/users/dvankooten/)
 * (@dvankooten)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/invalid-api-key-2/#post-4901605)
 * Hi there,
 * Are you sure you’re copying the complete & correct API key? It should look something
   like this:
 *     ```
       abc123abc123abc123-us1
       ```
   
 * The last `-us1` bit is especially important as this tells MailChimp which datacenter
   to access.
 *  Thread Starter [chrississons](https://wordpress.org/support/users/chrississons/)
 * (@chrississons)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/invalid-api-key-2/#post-4901637)
 * Thanks Danny, I’ve got it working. The key is longer than the box and for some
   reason the copy facility didn’t pick up the full key.
 *  Plugin Author [Danny van Kooten](https://wordpress.org/support/users/dvankooten/)
 * (@dvankooten)
 * [12 years, 1 month ago](https://wordpress.org/support/topic/invalid-api-key-2/#post-4901689)
 * Glad you got it to work Chris!
 * PS. Should you have a quick minute to spare, a [plugin review here on WordPress.org](http://wordpress.org/support/view/plugin-reviews/mailchimp-for-wp)
   would make me quite happy. 🙂
 *  [geri_savana](https://wordpress.org/support/users/geri_savana/)
 * (@geri_savana)
 * [11 years, 1 month ago](https://wordpress.org/support/topic/invalid-api-key-2/#post-4901781)
 * I have the same problem. Just installed the plug-in. The error message that I
   get when inserting the API key, is:
    API call to helper/ping failed: Couldn’t
   resolve host ‘us10 .api.mailchimp.com’ Can you help? Thanks in advance!

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Invalid API key’ is closed to new replies.

 * ![](https://ps.w.org/mailchimp-for-wp/assets/icon-256x256.png?rev=1224577)
 * [MC4WP: Mailchimp for WordPress](https://wordpress.org/plugins/mailchimp-for-wp/)
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 * [Reviews](https://wordpress.org/support/plugin/mailchimp-for-wp/reviews/)

## Tags

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

 * 4 replies
 * 3 participants
 * Last reply from: [geri_savana](https://wordpress.org/support/users/geri_savana/)
 * Last activity: [11 years, 1 month ago](https://wordpress.org/support/topic/invalid-api-key-2/#post-4901781)
 * Status: resolved