Title: Admin on different domain (multisite + domainmapping) issues
Last modified: November 7, 2016

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# Admin on different domain (multisite + domainmapping) issues

 *  [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * (@ravanh)
 * [9 years, 9 months ago](https://wordpress.org/support/topic/admin-on-different-domain-multisite-domainmapping-issues/)
 * Hi,
 * It seems impossible to use the Connect button from the Jetpack admin page when
   the admin is on a different domain than the front end.
 * This happens when on a multisite with Domain Mapping and the option to keep admin
   pages on the original domain activated, but I suppose it could also be possible
   with a single site setup where home and siteurl options are using different domains.
 * In browser console, from the Jetpack admin page on the multisite subdomain, I
   get
 *     ```
       Fetch API cannot load http://_MAPPED_DOMAIN_/wp-json/jetpack/v4/connection/url. Request header field x-wp-nonce is not allowed by Access-Control-Allow-Headers in preflight response.
       ```
   
 * Connecting the site from the WordPress.com My Sites interface works without issues.
 * Similar errors show when trying to de/activate modules, blocking requests by 
   the Chrome browser. When the admin domain is on HTTPS, the errors change a bit
   but the result is the same.
 * Is there any way to force Jetpack to pass **all** requests (API and files) over
   the admin domain?
    -  This topic was modified 9 years, 9 months ago by [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/).

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

 *  Plugin Author [Jeremy Herve](https://wordpress.org/support/users/jeherve/)
 * (@jeherve)
 * Jetpack Mechanic 🚀
 * [9 years, 9 months ago](https://wordpress.org/support/topic/admin-on-different-domain-multisite-domainmapping-issues/#post-8409581)
 * Thanks for the report!
 * Could you let me know what plugin you use to map domains on your Multisite network?
 * If you use the [WordPress MU Domain Mapping](https://wordpress.org/plugins/wordpress-mu-domain-mapping/)
   plugin, could you post a screenshot of your domain mapping options, so I can 
   try to reproduce the issue?
 * Thanks!
 *  Thread Starter [Rolf Allard van Hagen](https://wordpress.org/support/users/ravanh/)
 * (@ravanh)
 * [9 years, 9 months ago](https://wordpress.org/support/topic/admin-on-different-domain-multisite-domainmapping-issues/#post-8410834)
 * Hi Jeremy, no it’s the Domain Mapping plugin by WPMU DEV. So I tried to reproduce
   with Donncha’s plugin but with that (tried many settings) it seems to all work
   smoothly.
 * I’ll have to take it up with the WPMU DEV people.
 * Thanks for your feedback! 🙂
 *  Plugin Author [Jeremy Herve](https://wordpress.org/support/users/jeherve/)
 * (@jeherve)
 * Jetpack Mechanic 🚀
 * [9 years, 9 months ago](https://wordpress.org/support/topic/admin-on-different-domain-multisite-domainmapping-issues/#post-8410881)
 * Excellent. Let me know how it goes!

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

The topic ‘Admin on different domain (multisite + domainmapping) issues’ is closed
to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [Jeremy Herve](https://wordpress.org/support/users/jeherve/)
 * Last activity: [9 years, 9 months ago](https://wordpress.org/support/topic/admin-on-different-domain-multisite-domainmapping-issues/#post-8410881)
 * Status: not resolved