Turns out WordPress doesn’t deal well with post IDs > 2^31. http://core.trac.wordpress.org/ticket/16445 Tumblr in particular has post IDs greater than this, so it’s not recommended to keep old post IDs from Tumblr on an import.
The first thing to try: Manually download a fresh copy of WordPress Log into the FTP account and upload everything EXCEPT the wp-content folder It is important that you do NOT copy over the wp-content folder or the wp-config.php files. These are custom to each site. This will allow you to make sure the upgrade … Read more
I had the same issue and found a solution. From what I learned so far, there might be two causes to this problem: WP doesn’t recognize your rewrite rules because they are not cached yet. You can check this by dumping get_option( ‘rewrite_rules’ ); and if your rules did get cached, then they’ll be in … Read more
If you have a non-static request like: example.tld/some-slug/ then you will need to run WordPress to see if that slug is available. The webserver (nginx/apache) doesn’t know that, because WordPress will have to inform us about that through the 404 response header. If your site has only few pages, then you could tell the webserver … Read more
If you intend to do checks based on template tags you should hook on wp action. template_redirect will suffice too, but wp is earlier. This is when WP handles 404 itself. To perform a 301 redirect use status_header( 301 );, wp_safe_redirect(); immediately followed by exit; You could use a plugin handle these for you. It’s … Read more
Your theme or plugins are most likely modifying the “Lost password” link on your wp-login.php via the lostpassword_url filter. How do I reset the “change password” page to the WP default one? One would need to remove those filters callbacks. Here’s one (untested) suggestion: add_filter( ‘lostpassword_url’, function( $url, $redirect ) { remove_all_filters( ‘lostpassword_url’ ); return … Read more
Chris did you try the solution from the WordPress Forum? According to some users, this can solve the problem. Go into your .htaccess file and change the following: Header set Referrer-Policy “” to Header set Referrer-Policy “origin”
High CPU usage on 404 errors
If you are using a static page as homepage, make sure that the page which you were using as static homepage actually exists. https://stackoverflow.com/questions/40186902/virtualhost-sets-the-url-as-abc-com-subdirectory/40187170#40187170 Have a look at this. It’s fairly the same scenario.
Thinking on it for a minute, I suppose it has something to do with the rewrite rules from the WP .htacces is kicking in and rewriting the request to WP. It doesn’t totally make sense to me, because WP’s rewrite rules actually ignore directories, and I cannot reproduce it with a quick test, but there … Read more