Intermittent Problem with 4.2.1 NO DATA RECEIVED ERR_NAME_NOT_RESOLVED

After much trial and error I have finally found out why my URL https://www.trescoolgadgets.com has been returning the error 4.2.1 NO DATA RECEIVED ERR_NAME_NOT_RESOLVED. (On Firefox the error will appear as “Connection to the Server Reset”).

SOLUTION: by DOWNGRADING WORDPRESS back to 4.2. An easy way to do this is overwrite the files that changed in this version, but the culprit of this update I found to be the wp-db.php. I downgraded 2 of my blogs that had this issue (the only two with 4.2.1) and FINALLY now the sites now loads.

To stop Auto-updating your WP site, there is a plug-in to do that. Search for DISABLE WordPress Updates in the WP Plugins depot.

Here are the files that were replaced in the 4.2.1 release.

wp-includes/version.php
wp-includes/wp-db.php
wp-admin/about.php
wp-admin/includes/upgrade.php

Best of luck.