If you’ve recently upgraded to v2.8, you may have noticed the visual editor is no longer working. You’re not alone. Here’s a few things to check that should get you up and running again.

1. A plugin that isn’t compatible. Solution #1: Try deactivating all your plugins. See if the visual editors is working after you do that. If so, re-activate your plugins one at a time, checking the visual editor after each one to make sure it’s still working. When it starts working after you re-activate a plugin, you’ll know that plugin is one of the culprits; however, continue checking as you re-activate, because more than one plugin could cause a problem.

2. Not all of the visual editor files were properly copied. Solution #2: You can log into your wp-admin go to Tools > Upgrade and click the Re-Install Automatically button. That may resolve the issue for you.

3. Network cache issue.  Solution  #3: This is the fix that worked for me personally; I added a line of coding to my wp-config.php file and that instantly resolved the problem for me when none of the above worked. Log into your site via FTP and download the wp-config.php file to your computer. Then open this file in Notepad or any html or text editor is fine.

Add this line of code:

define( ‘CONCATENATE_SCRIPTS’, false );

Find this line of text in your wp-config.php* file:

//Change each KEY to a different unique phrase…

and copy/paste the code above it and save. Then re-upload the wp-config.php file to your site, overwriting the one that’s there. That’s it.

One of the above three fixes should resolve this visual editor issue for you.

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*The wp-config.php file is located in the file where your main blog files are located. So if your blog is in a folder called /blog it’s right under that – if your blog is installed in the root, then it will be under the /public_html folder.