Title: problem when join by frontend form
Last modified: August 22, 2016

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# problem when join by frontend form

 *  Resolved [hojjatmr](https://wordpress.org/support/users/hojjatmr/)
 * (@hojjatmr)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/problem-when-join-by-frontend-form/)
 * Hello
 * When try to join by frontend form, the result url is not well formed:
 * > [http://****/bigbluebutton/api/join?meetingID=077df106f4b07709f0d8c14dcb3e610ceaca5bab&#038](http://****/bigbluebutton/api/join?meetingID=077df106f4b07709f0d8c14dcb3e610ceaca5bab&#038);
   > fullName=saeid&#038 ;password=ap&#038 ;checksum=25606de966dd184f3f40664209feb5d09cf3dc28
 * And browser displays:
 * > <response><returncode>FAILED</returncode><messageKey>checksumError</messageKey
   > ><message>You did not pass the checksum security check</message></response>
 * If I manually replace &#038 ; by & and press enter, it will join successfully.
 * There is not problem pn joining from join button of backend (wordpress admin 
   area – setting – bigbluebutton), the problem occurs only join from frontend form.
 * Please advice.
 * Thank you
 * [https://wordpress.org/plugins/bigbluebutton/](https://wordpress.org/plugins/bigbluebutton/)

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

 *  Thread Starter [hojjatmr](https://wordpress.org/support/users/hojjatmr/)
 * (@hojjatmr)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/problem-when-join-by-frontend-form/#post-5837043)
 * It seems bug of wordpress 4.1.1 core:
 * [https://wordpress.org/support/topic/url-problem-038-replaces-and-breaks-the-navigation-1?replies=10](https://wordpress.org/support/topic/url-problem-038-replaces-and-breaks-the-navigation-1?replies=10)
 * [https://core.trac.wordpress.org/ticket/30831](https://core.trac.wordpress.org/ticket/30831)
 *  Thread Starter [hojjatmr](https://wordpress.org/support/users/hojjatmr/)
 * (@hojjatmr)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/problem-when-join-by-frontend-form/#post-5837047)
 * do comment line 300 of /wp-includes/formatting.php file can solve this bug.
 * [https://github.com/WordPress/WordPress/blob/master/wp-includes/formatting.php](https://github.com/WordPress/WordPress/blob/master/wp-includes/formatting.php)
 *  Plugin Author [J Federico](https://wordpress.org/support/users/jfederico/)
 * (@jfederico)
 * [11 years, 1 month ago](https://wordpress.org/support/topic/problem-when-join-by-frontend-form/#post-5837327)
 * Hi hojjatmr,
 * Good catch. Thanks for the tip. We’ll take a closer look
 * JF
 *  Plugin Author [J Federico](https://wordpress.org/support/users/jfederico/)
 * (@jfederico)
 * [10 years, 4 months ago](https://wordpress.org/support/topic/problem-when-join-by-frontend-form/#post-5837358)
 * Closing due inactivity

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

The topic ‘problem when join by frontend form’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/bigbluebutton_91cceb.svg)
 * [BigBlueButton](https://wordpress.org/plugins/bigbluebutton/)
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 * 4 replies
 * 2 participants
 * Last reply from: [J Federico](https://wordpress.org/support/users/jfederico/)
 * Last activity: [10 years, 4 months ago](https://wordpress.org/support/topic/problem-when-join-by-frontend-form/#post-5837358)
 * Status: resolved