Title: Getting Error: Invalid request headers (err code: 6003 )
Last modified: April 23, 2020

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# Getting Error: Invalid request headers (err code: 6003 )

 *  Resolved [mainakmk](https://wordpress.org/support/users/mainakmk/)
 * (@mainakmk)
 * [6 years ago](https://wordpress.org/support/topic/getting-error-invalid-request-headers-err-code-6003/)
 * After setup, the plugin getting “Error: Invalid request headers (err code: 6003)”
 * What the cause of getting this error?
    And how to fix it?

Viewing 7 replies - 1 through 7 (of 7 total)

 *  Plugin Contributor [Salvatore Fresta](https://wordpress.org/support/users/salvatorefresta/)
 * (@salvatorefresta)
 * [6 years ago](https://wordpress.org/support/topic/getting-error-invalid-request-headers-err-code-6003/#post-12721387)
 * Hello,
    this is a Cloudflare error about your credentials. Are u sure to use 
   a correct API key and email address?
 *  Thread Starter [mainakmk](https://wordpress.org/support/users/mainakmk/)
 * (@mainakmk)
 * [6 years ago](https://wordpress.org/support/topic/getting-error-invalid-request-headers-err-code-6003/#post-12721554)
 * Hi,
    Now the problem fixed, getting a problem with Cloudflare API.
 * By the way, your plugin is Amazing.
 *  Plugin Contributor [Salvatore Fresta](https://wordpress.org/support/users/salvatorefresta/)
 * (@salvatorefresta)
 * [6 years ago](https://wordpress.org/support/topic/getting-error-invalid-request-headers-err-code-6003/#post-12722660)
 * Thank you for using it 🙂
 *  [matteolavaggi](https://wordpress.org/support/users/matteolavaggi/)
 * (@matteolavaggi)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/getting-error-invalid-request-headers-err-code-6003/#post-12942406)
 * Hi [@salvatorefresta](https://wordpress.org/support/users/salvatorefresta/) please
   i’m also haveing same issue.
 * I’m working on a multisite installation, i was able after some try to connect
   plugin with cloudflare using ACCOUNT TOKEN instead email/key api on the first
   website.
    But using the same credential in the second one, we still get this 
   error :
 * Error: Invalid request headers (err code: 6003 )
 * Credential are 100% ok, we get same error try to using api key and api token
 *  Plugin Contributor [Salvatore Fresta](https://wordpress.org/support/users/salvatorefresta/)
 * (@salvatorefresta)
 * [5 years, 11 months ago](https://wordpress.org/support/topic/getting-error-invalid-request-headers-err-code-6003/#post-12946646)
 * Hi [@matteolavaggi](https://wordpress.org/support/users/matteolavaggi/) ,
    what’s
   in your log file? Send it to me
 * On multisite you must install and configure it separately for each website ok?
 *  [Marcos Marcon](https://wordpress.org/support/users/escrevapromarcos/)
 * (@escrevapromarcos)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/getting-error-invalid-request-headers-err-code-6003/#post-13194331)
 * Also having the same error here after the last update.
 * Invalid request headers (err code: 6003 )
 * Dont know what to do anymore.
 * Marcos.
 *  Plugin Contributor [Salvatore Fresta](https://wordpress.org/support/users/salvatorefresta/)
 * (@salvatorefresta)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/getting-error-invalid-request-headers-err-code-6003/#post-13194931)
 * Are you maybe using API token as API key?

Viewing 7 replies - 1 through 7 (of 7 total)

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 * 7 replies
 * 4 participants
 * Last reply from: [Salvatore Fresta](https://wordpress.org/support/users/salvatorefresta/)
 * Last activity: [5 years, 9 months ago](https://wordpress.org/support/topic/getting-error-invalid-request-headers-err-code-6003/#post-13194931)
 * Status: resolved