Title: Random and regular 404 errors on all posts
Last modified: August 21, 2016

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# Random and regular 404 errors on all posts

 *  [Anonity](https://wordpress.org/support/users/anonity/)
 * (@anonity)
 * [12 years, 7 months ago](https://wordpress.org/support/topic/random-and-regular-404-errors-on-all-posts/)
 * Hey,
 * I have been receiving a lot of 404 errors on my sites and I don’t know why they
   are happening or how to solve them.
 * I’m monitoring them with SEO Ultimate and they all follow the same pattern:
 * myurl.com/post/null
    myurl.com/post/_blank myurl.com/post/undefined
 * to list some of them. The mysite.com/post URL is working perfectly, but the crawlers
   try to acces the same URLs with /null /_blank… and they get a 404.
 * Why are the crawlers trying to view those pages if they have never existed? Will
   these errors penalize my site SEO? How can I solve them? Will creating a redirection
   to the normal post URL work?
 * I have been researching for a while and couldn’t find a solution…
 * Thanks in advance.

The topic ‘Random and regular 404 errors on all posts’ is closed to new replies.

## Tags

 * [404 errors](https://wordpress.org/support/topic-tag/404-errors/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 0 replies
 * 1 participant
 * Last reply from: [Anonity](https://wordpress.org/support/users/anonity/)
 * Last activity: [12 years, 7 months ago](https://wordpress.org/support/topic/random-and-regular-404-errors-on-all-posts/)
 * Status: not resolved

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