visual editor disappeared

Try:
– deactivating ALL (yes all) plugins temporarily to see if this resolves the problem (plugin functions can interfere). If this works, re-activate them individually (one-by-one) to find the problematic plugin(s).
– resetting the plugins folder by FTP. Sometimes, an apparently inactive plugin can still cause problems.
– switching to the unedited default Theme (Twenty Sixteen, etc.) for a moment using the WP dashboard to rule out any theme-specific issue (theme functions can interfere like plugins).

I tried ALL three methods!
One at a time: No results with anyone.

Anything else?

– Your browser can help you identify JavaScript issues or conflicts. Do you have any Javascript errors in the console when looking at the editor page?
– This article can assist you in doing that diagnosis.
– If you use any caching systems, like Cloudflare, clear those caches.
– Check that the file permissions of all the PHP files are set correct (i.e., 644).
– Specifically check files like /wp-includes/js/tinymce/wp-tinymce.php and such.
– If the permissions are incorrect, then some servers running security code like suhosin won’t allow those files to run.

Step 1: I tried Chrome, Safari and Firefox, all 3 the same.
Step 2: Enabled script debugging -> Issue is fixed

No Cloudfare or Suhosin.

file permissions for that file is 644 and all other files in that directory, all subdirectories are 755.

After disabling script debugging the error returned, in the Chrome javascript console you can read:
Uncaught ReferenceError: tinymce is not defined

I tried ALL three methods!
One at a time: No results with anyone.

Does this still happen with all plugins disabled *AND* Twenty Sixteen theme active at the same time?

all plugins disabled *AND* Twenty Sixteen theme active? YES
???

If the plugins are ok and the themes are ok, then what? the core files?

It looks as been a permissions problems, as far as I have seen every single file is 644 and every single directory is 755.

I asked the webhost, they resetted the permissions for the whole directory. It did not make it.

Then I reloaded most of the core, “wp-admin”, “wp-includes” and the main directory. No results.

– Your browser can help you identify JavaScript issues or conflicts. Do you have any Javascript errors in the console when looking at the editor page?
– This article can assist you in doing that diagnosis.
– If you use any caching systems, like Cloudflare, clear those caches.
– Check that the file permissions of all the PHP files are set correct (i.e., 644).
– Specifically check files like /wp-includes/js/tinymce/wp-tinymce.php and such.
– If the permissions are incorrect, then some servers running security code like suhosin won’t allow those files to run.

SORTED!!!!

Yes, those two pages were useful, but not enough.

There was an unused plugin that created a DB table, so when I disable the plugins the bug was still there… I removed the plugin files and the table and sorted!

Thank you very much!

BTW: The plugin was: “WP Editor”…

Glad to know it ??