Title: PHP Warning: IDNA_DEFAULT
Last modified: January 8, 2021

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# PHP Warning: IDNA_DEFAULT

 *  [backpackingseries](https://wordpress.org/support/users/backpackingseries/)
 * (@backpackingseries)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/php-warning-idna_default/)
 * `[08-Jan-2021 05:48:25 UTC] PHP Warning: Use of undefined constant IDNA_DEFAULT-
   assumed 'IDNA_DEFAULT' (this will throw an Error in a future version of PHP) 
   in /wp-content/plugins/wp-ses/vendor/Aws3/GuzzleHttp/Client.php on line 195`
 * Hi,
 * Thank you for this amazing plugin.
 * I noticed the above warning message earlier today. Is there something I need 
   to do to fix this please?
 * Kind regards,

Viewing 5 replies - 1 through 5 (of 5 total)

 *  [suprok](https://wordpress.org/support/users/suprok/)
 * (@suprok)
 * [5 years, 4 months ago](https://wordpress.org/support/topic/php-warning-idna_default/#post-13905381)
 * Hi,
 * We are receiving the same message on 2 different websites. And also saying our
   verified emails are not verified.
 *  [jrgb](https://wordpress.org/support/users/jrgb/)
 * (@jrgb)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/php-warning-idna_default/#post-14139056)
 * `PHP Warning: Use of undefined constant IDNA_DEFAULT - assumed 'IDNA_DEFAULT'(
   this will throw an Error in a future version of PHP) in D:\vhosts\Wordpress3\
   wordpress\wp-content\plugins\wp-ses\vendor\Aws3\GuzzleHttp\Client.php on line
   195`
 * I also get this error message when trying to access settings.
 * All searches for this pointed to this unanswered question here.
 *  [jrgb](https://wordpress.org/support/users/jrgb/)
 * (@jrgb)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/php-warning-idna_default/#post-14139685)
 * We’ve now fixed it ourselves. I think by a “IIS reset to fully cycle PHP”
 *  [horseguards](https://wordpress.org/support/users/horseguards/)
 * (@horseguards)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/php-warning-idna_default/#post-14192441)
 * We are getting hundreads of warning messages like this one.
 * Any ideas on how to solve this issue?
 * [14-Mar-2021 23:21:42 UTC] PHP Warning: Use of undefined constant IDNA_DEFAULT–
   assumed ‘IDNA_DEFAULT’ (this will throw an Error in a future version of PHP) 
   in /home/mcniac/public_html/wp-content/plugins/wp-ses/vendor/Aws3/GuzzleHttp/
   Client.php on line 195
 *  [Dhananjay](https://wordpress.org/support/users/dhananjaygbhardwaj/)
 * (@dhananjaygbhardwaj)
 * [5 years, 1 month ago](https://wordpress.org/support/topic/php-warning-idna_default/#post-14314167)
 * Same here. [@deliciousbrains](https://wordpress.org/support/users/deliciousbrains/)
   please take a look.

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘PHP Warning: IDNA_DEFAULT’ is closed to new replies.

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 * 5 replies
 * 5 participants
 * Last reply from: [Dhananjay](https://wordpress.org/support/users/dhananjaygbhardwaj/)
 * Last activity: [5 years, 1 month ago](https://wordpress.org/support/topic/php-warning-idna_default/#post-14314167)
 * Status: not resolved