Wordpress WYSIWYG editor not available

Hi Folks,
I saw another member had posted the same issue.
I have de-activated all plugins, changed to the twenty-sixteen theme, re-applied the 4.7.1 WP update, then tested the editor - no help. The "visual" tab will not select and provide the tiny mce/WYSIWYG editor.
I have changed back to my normal theme and re-activated all the plugins, same thing.
I have tested 4 other sites and none of them are having the issue, and I use the same theme on 2 of them.
I appreciate any help!
Access has been granted to the site.
Interesting little bug! Let's kill it :slight_smile:

Ken