Title: Proxy Error
Last modified: November 27, 2017

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# Proxy Error

 *  Resolved [gld](https://wordpress.org/support/users/gld/)
 * (@gld)
 * [8 years, 6 months ago](https://wordpress.org/support/topic/proxy-error-3/)
 * Hi, having an issue presently with Launchkey authentication. I suspect it’s a
   server/ firewall issue however wanted to get your perspective:
 * 1. User attempts a login – correct
    2. Launchkey initiates an authentication –
   correct 3. Authentication is given – correct 4. WP seems to timeout waiting a
   response
 * The WP error is as follows:
    —————– Proxy Error
 * The proxy server received an invalid response from an upstream server.
    The proxy
   server could not handle the request POST /wp-login.php.
 * Reason: Error reading from remote server
    —————–
 * Any idea what might be going on? Thanks!

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Author [aenglander](https://wordpress.org/support/users/aenglander/)
 * (@aenglander)
 * [8 years, 6 months ago](https://wordpress.org/support/topic/proxy-error-3/#post-9725548)
 * There are two important details that are required for an authorization response
   to be received by the LaunchKey WordPress plugin.
    1. Your LaunchKey app must be properly configured in the LaunchKey Dashboard. You
       must set the Callback URL item in the Configuration section of the General tab
       of you LaunchKey Application settings with the callback URL provided by the 
       plugin during the setup wizard in the _Add this Callback URL to your Application_
       or in the plugin settings.
    2. The callback URL must be accessible from the LaunchKey servers in the iovation
       data centers. If you WordPress instance is behind a firewall and cannot be accessed
       via the Internet, you will not be able to use the LaunchKey plugin. If you are
       just test driving LaunchKey on your own computer, you can use a reverse proxy
       tool like Ngrok.
 * Feel free to respond if this does not resolve your issue.
 * Adam
 *  Thread Starter [gld](https://wordpress.org/support/users/gld/)
 * (@gld)
 * [8 years, 6 months ago](https://wordpress.org/support/topic/proxy-error-3/#post-9729174)
 * Thanks Adam, that makes sense.
 * The callback URL is set and is aligned but I believe the issue lies in the second
   point. For some reason the URL is accessible on the LAN but not from outside 
   on the Internet. It’s therefore a networking/ firewall issue. I’ll look into 
   it from here. Thanks so much!

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Proxy Error’ is closed to new replies.

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 * 2 replies
 * 2 participants
 * Last reply from: [gld](https://wordpress.org/support/users/gld/)
 * Last activity: [8 years, 6 months ago](https://wordpress.org/support/topic/proxy-error-3/#post-9729174)
 * Status: resolved