Wordpress Theme Won't Install - Already checked other Questions...

BUMP

I’m having the same issue and I’ve followed the steps to re-upload the wp-config.php file and the theme still didn’t work. I know it works because I installed it on another instance of WP I have on another server. I don’t know what else to do.

Current version of WP: 4.7.2 No plugins installed - and clean install of Wordpress

@jwalexander22

This error is normally due to an invalid nonce (a token used by WordPress to authenticate the request being made against the user that is logged in). If the nonce fails, you’ll see this error.

Unfortunately, there’s not a simple fix; it’s trial and error. The first thing you’d want to do is disable all plugins. Plugins hook in to the core, thus they have the ability to change what is output to the browser (thus, they have the ability to cause issues if something isn’t quite right) , so to stop that, we need to disable them all so that we’re running as close to stock as possible.

With all plugins disabled, log out, log back in and try to upload the theme. If it works, you can then start enabling plugins one-by-one until you run in to a similar issue. When you see the same issue pop up, you’d now want to see what the last plugin you enabled was and check any error logs you may have in your home directory.

If the above doesn’t work, the best thing to do would be to simply download a fresh copy of WordPress, backup your current files and then overwrite the current files with those from the freshly downloaded WordPress ZIP. If you’re running an older version of WordPress than is current, now would be a good time to upgrade (otherwise do not perform this step).

@jtittle I tried everything you had suggested (there were no plugins activated so I deleted them anyway), still didn’t upload.

Was running the latest version of Wordpress but did a re-install and still failed to upload :/

What else could it be?