• majorAlexa

        See all notifications

        Skip to content
        Moz logo Menu open Menu close
        • Products
          • Moz Pro
          • Moz Pro Home
          • Moz Local
          • Moz Local Home
          • STAT
          • Moz API
          • Moz API Home
          • Compare SEO Products
          • Moz Data
        • Free SEO Tools
          • Domain Analysis
          • Keyword Explorer
          • Link Explorer
          • Competitive Research
          • MozBar
          • More Free SEO Tools
        • Learn SEO
          • Beginner's Guide to SEO
          • SEO Learning Center
          • Moz Academy
          • MozCon
          • Webinars, Whitepapers, & Guides
        • Blog
        • Why Moz
          • Digital Marketers
          • Agency Solutions
          • Enterprise Solutions
          • Small Business Solutions
          • The Moz Story
          • New Releases
        • Log in
        • Log out
        • Products
          • Moz Pro

            Your all-in-one suite of SEO essentials.

          • Moz Local

            Raise your local SEO visibility with complete local SEO management.

          • STAT

            SERP tracking and analytics for enterprise SEO experts.

          • Moz API

            Power your SEO with our index of over 44 trillion links.

          • Compare SEO Products

            See which Moz SEO solution best meets your business needs.

          • Moz Data

            Power your SEO strategy & AI models with custom data solutions.

          Let your business shine with Listings AI
          Moz Local

          Let your business shine with Listings AI

          Learn more
        • Free SEO Tools
          • Domain Analysis

            Get top competitive SEO metrics like DA, top pages and more.

          • Keyword Explorer

            Find traffic-driving keywords with our 1.25 billion+ keyword index.

          • Link Explorer

            Explore over 40 trillion links for powerful backlink data.

          • Competitive Research

            Uncover valuable insights on your organic search competitors.

          • MozBar

            See top SEO metrics for free as you browse the web.

          • More Free SEO Tools

            Explore all the free SEO tools Moz has to offer.

          NEW Keyword Suggestions by Topic
          Moz Pro

          NEW Keyword Suggestions by Topic

          Learn more
        • Learn SEO
          • Beginner's Guide to SEO

            The #1 most popular introduction to SEO, trusted by millions.

          • SEO Learning Center

            Broaden your knowledge with SEO resources for all skill levels.

          • On-Demand Webinars

            Learn modern SEO best practices from industry experts.

          • How-To Guides

            Step-by-step guides to search success from the authority on SEO.

          • Moz Academy

            Upskill and get certified with on-demand courses & certifications.

          • MozCon

            Save on Early Bird tickets and join us in London or New York City

          Unlock flexible pricing & new endpoints
          Moz API

          Unlock flexible pricing & new endpoints

          Find your plan
        • Blog
        • Why Moz
          • Digital Marketers

            Simplify SEO tasks to save time and grow your traffic.

          • Small Business Solutions

            Uncover insights to make smarter marketing decisions in less time.

          • Agency Solutions

            Earn & keep valuable clients with unparalleled data & insights.

          • Enterprise Solutions

            Gain a competitive edge in the ever-changing world of search.

          • The Moz Story

            Moz was the first & remains the most trusted SEO company.

          • New Releases

            Get the scoop on the latest and greatest from Moz.

          Surface actionable competitive intel
          New Feature

          Surface actionable competitive intel

          Learn More
        • Log in
          • Moz Pro
          • Moz Local
          • Moz Local Dashboard
          • Moz API
          • Moz API Dashboard
          • Moz Academy
        • Avatar
          • Moz Home
          • Notifications
          • Account & Billing
          • Manage Users
          • Community Profile
          • My Q&A
          • My Videos
          • Log Out

        The Moz Q&A Forum

        • Forum
        • Questions
        • My Q&A
        • Users
        • Ask the Community

        Welcome to the Q&A Forum

        Browse the forum for helpful insights and fresh discussions about all things SEO.

        1. Home
        2. SEO Tactics
        3. Technical SEO
        4. Intermittent 404 - What causes them and how to fix?

        Moz Q&A is closed.

        After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.

        Intermittent 404 - What causes them and how to fix?

        Technical SEO
        2
        2
        2056
        Loading More Posts
        • Watching

          Notify me of new replies.
          Show question in unread.

        • Not Watching

          Do not notify me of new replies.
          Show question in unread if category is not ignored.

        • Ignoring

          Do not notify me of new replies.
          Do not show question in unread.

        • Oldest to Newest
        • Newest to Oldest
        • Most Votes
        Reply
        • Reply as question
        Locked
        This topic has been deleted. Only users with question management privileges can see it.
        • daniel-brooks
          daniel-brooks Subscriber last edited by

          Hi!

          I'm working on a client site at the moment and I've discovered a couple of pages that are 404ing but producing a 200 OK response.

          However, I have checked these URLs again and some are now producing a 404 Error response. No changes have been made (that I'm aware of) so it appears that the URLs are returning both 200 OK and 404 Error responses intermittently.

          Any ideas what could cause this and the best solution?

          Thanks!

          1 Reply Last reply Reply Quote 0
          • seanginnaw
            seanginnaw last edited by

            Hi Daniel,

            That does seem very odd!

            There can be various different things at play here in my experience:

            1. Publishing and un-publishing in the CMS - Sometimes clients and CMS users will switch the page publish status around which can make it difficult to keep track of whether the page exists or not
            2. Removal of redirects - Much the same as above, there's the possibility that someone is adding/removing redirects. This could also be something to do with the removal of the server level redirects file, be that htaccess or IIS.
            3. Crawling tool issue - If you're using a crawling tool (especially if doing so with JS rendering active), sometimes this can put a lot of pressure on the server and it can spit out the occasional error where there actually isn't one

            It could also be a problem with how you're handing hard 404 errors vs soft 404s - i.e. actual not founds vs pages that don't function but the server is under the impression that they're fine.

            Best of luck!

            Sean

            1 Reply Last reply Reply Quote 0
            • 1 / 1
            • First post
              Last post

            Browse Questions

            Explore more categories

            • Moz Tools

              Chat with the community about the Moz tools.

            • SEO Tactics

              Discuss the SEO process with fellow marketers

            • Community

              Discuss industry events, jobs, and news!

            • Digital Marketing

              Chat about tactics outside of SEO

            • Research & Trends

              Dive into research and trends in the search industry.

            • Support

              Connect on product support and feature requests.

            • See all categories

            Related Questions

            • ruevoliere

              Woocommerce add-to-cart causing increase in temporary redirect

              Hi, I was wondering is negatively influencing the SEO. Woocommerce add-to-cart is, logically, a 302. However, MOZ is alarming that there is a large amount of temporary redirects on my site.  Do I have to act on this or just leave as is? I change the nofollow to follow but not sure if this does more harm then good. Would like to hear some input regarding this issue.

              Technical SEO | | ruevoliere
              0
            • AllChargedUp

              How do you fix redirect chains and temporary redirects?

              Hi, I have a lot of issues popping up with temporary redirects and redirect chains. I'm still confused as to what exactly redirect chains are and I don't know how to find where the "chains" are or how to fix them. I'm having two issues mainly:1. Temporary RedirectsI have around 100 pages on our www.twowayradiosfor.com website that are being flagged as temporary redirects. All of them have one thing in common: they are review pages (basically, when a customer clicks on the Review button to review a certain product, they are redirected to a review page for that product).URL Example:  https://www.twowayradiosfor.com/reviewhelpful.asp?ProductCode=CLS1410-COMBO&ID=44&yes=noI went into our website and set any URL containing the following as noindex:/review.aspWill that fix the issue? If yes, will I also need to do that for any URL containing /reviewhelpful.asp?2. Redirect ChainsIt seems like basically every product page on my website has this issue (over 100 pages). Here's an example of one:https://www.twowayradiosfor.com/Motorola-CLS1110-p/cls1110.htmI don't see any broken links on this page or links that redirect to another page that redirects, etc. What is causing this? Is it something on my header bar that is redirecting (since that header bar appears on every page, maybe that is why this issue shows up on a lot of pages)?I am new to Moz and still trying to figure this stuff out. I really appreciate any help. Thanks, Sawyer

              Technical SEO | | AllChargedUp
              0
            • kirupa

              How to fix: Attribute name not allowed on element meta at this point.

              Hello, HTML validator brings "Attribute name not allowed on element meta at this point" for all my meta tags. Yet, as I understand, it is essential to keep meta-description for SEO, for example. I read a couple of articles on how to fix that and one of them suggests considering  HTML5 custom data attribute instead of name: Do you think I should try   to validate my page? And     instead of ? I will appreciate your advise very much!

              Technical SEO | | kirupa
              0
            • niconico101

              Disallow: /404/ - Best Practice?

              Hello Moz Community, My developer has added this to my robots.txt file: Disallow: /404/ Is this considered good practice in the world of SEO? Would you do it with your clients? I feel he has great development knowledge but isn't too well versed in SEO. Thank you in advanced, Nico.

              Technical SEO | | niconico101
              1
            • Oxfordcomma

              Increase 404 errors or 301 redirects?

              Hi all, I'm working on an e-commerce site that sells products that may only be available for a certain period of time. Eg. A product may only be selling for 1 year and then be permanently out of stock. When a product goes out of stock, the page is removed from the site regardless of any links it may have gotten over time. I am trying to figure out the best way to handle these permanently out of stock pages. At the moment, the site is set up to return a 404 page for each of these products. There are currently 600 (and increasing) instances of this appearing on Google Webmasters. I have read that too many 404 errors may have a negative impact on your site, and so thought I might 301 redirect these URLs to a more appropriate page. However I've also read that too many 301 redirects may have a negative impact on your site. I foresee this to be an issue several years down the road when the site has thousands of expired products which will result in thousands of 404 errors or 301 redirects depending on which route I take. Which would be the better route? Is there a better solution?

              Technical SEO | | Oxfordcomma
              0
            • JohnHuynh

              Miss meta description on 404 page

              Hi, My 404 page did not have meta description. Is it an error? Because I run report and seomoz said that a problem. Thanks!

              Technical SEO | | JohnHuynh
              0
            • koamit

              What should be use 301 or 302 redirection for 404 pages

              Please suggest which redirection we should use for 404 pages- 301 or 302. If you can elaborate it with reason then it will be highly appreciated.

              Technical SEO | | koamit
              0
            • Leighm

              Should there be a canonical tag on my 404 error page?

              In my crawl diagnostics, I notice some 4xx client errors. They are appearing for pages that no longer exist, so I'm not sure what the problem is. Shouldn't they just be dealt as 404's? Anyway, on closer inspection I noticed that my 404 error page contains a canonical tag which points to the missing page. Could this be the issue? Is it a good idea to remove the canonical tag from this error page? Thanks.

              Technical SEO | | Leighm
              0

            Get started with Moz Pro!

            Unlock the power of advanced SEO tools and data-driven insights.

            Start my free trial
            Products
            • Moz Pro
            • Moz Local
            • Moz API
            • Moz Data
            • STAT
            • Product Updates
            Moz Solutions
            • SMB Solutions
            • Agency Solutions
            • Enterprise Solutions
            • Digital Marketers
            Free SEO Tools
            • Domain Authority Checker
            • Link Explorer
            • Keyword Explorer
            • Competitive Research
            • Brand Authority Checker
            • Local Citation Checker
            • MozBar Extension
            • MozCast
            Resources
            • Blog
            • SEO Learning Center
            • Help Hub
            • Beginner's Guide to SEO
            • How-to Guides
            • Moz Academy
            • API Docs
            About Moz
            • About
            • Team
            • Careers
            • Contact
            Why Moz
            • Case Studies
            • Testimonials
            Get Involved
            • Become an Affiliate
            • MozCon
            • Webinars
            • Practical Marketer Series
            • MozPod
            Connect with us

            Contact the Help team

            Join our newsletter
            Moz logo
            © 2021 - 2025 SEOMoz, Inc., a Ziff Davis company. All rights reserved. Moz is a registered trademark of SEOMoz, Inc.
            • Accessibility
            • Terms of Use
            • Privacy

            Looks like your connection to Moz was lost, please wait while we try to reconnect.