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.

      Track AI Overviews in Keyword Research
      Moz Pro

      Track AI Overviews in Keyword Research

      Try it free!
    • 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
    • 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. Subdomain 403 error

    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.

    Subdomain 403 error

    Technical SEO
    2
    5
    1337
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as question
    Log in to reply
    This topic has been deleted. Only users with question management privileges can see it.
    • WeAreDigital_BE
      WeAreDigital_BE Subscriber last edited by

      Hi Everyone,

      A crawler from our SEO tool detects a 403 error from a link from our main domain to a a couple of subdomains. However, these subdomains are perfect accessibly. What could be the problem? Is this error caused by the server, the crawlbot or something else?

      I would love to hear your thoughts.
      Jens

      1 Reply Last reply Reply Quote 0
      • Roman-Delcarmen
        Roman-Delcarmen @WeAreDigital_BE last edited by

        no at all

        1 Reply Last reply Reply Quote 1
        • WeAreDigital_BE
          WeAreDigital_BE Subscriber @Roman-Delcarmen last edited by

          Hi Roman,

          Thanks for your answer!

          It's a commercial tool.

          I checked the robots.txt file and .htaccess, but didn't saw any problems.
          As you say, the problem can just be caused by the user-agent.

          If so, this will not affect my SEO efforts, right?

          Roman-Delcarmen 1 Reply Last reply Reply Quote 0
          • Roman-Delcarmen
            Roman-Delcarmen last edited by

            Which tool are you using is this a custom tool or commercial tool such as Screamingfrog?

            WeAreDigital_BE 1 Reply Last reply Reply Quote 1
            • Roman-Delcarmen
              Roman-Delcarmen last edited by

              These are all for client errors. That means the page wasn’t found and something is wrong with the request. Whatever is happening though, the issue is typically on the client side:

              403: Forbidden, So In your case, the first place that you need to check is your .htaccess and your Robots.txt file and make sure that they are not blocking any crawler or at least the crawler of your tools.

              For example, some Hosting providers block all the crawlers that are not Google or Bing to save resources. So is usual that Roger (Moz Crawler) has problems to crawl a page that is blocked on the server side. Usually, Moz, Ahrefs, Semrush has this kind of problem so in summary

              • Make sure your .htaccess and your Robots.txt is not blocking your crawler
              • Make sure your hosting is not blocking your crawler
              • If all the above does not work try to modify the user-agent of your tool

              Hope this info helps you with your problem

              1 Reply Last reply Reply Quote 2
              • 1 / 1
              • First post
                Last post

              Got a burning SEO question?

              Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.


              Start my free trial


              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

              • mfrgolfgti

                How to get rid of bot verification errors

                crawl errors 4xx error

                I have a client who sells highly technical products and has lots and lots (a couple of hundred) pdf datasheets that can be downloaded from their website. But in order to download a datasheet, a user has to register on the site. Once they are registered, they can download whatever they want (I know this isn't a good idea but this wasn't set up by us and is historical). On doing a Moz crawl of the site, it came up with a couple of hundred 401 errors. When I investigated, they are all pages where there is a button to click through to get one of these downloads. The Moz error report calls the error "Bot verification". My questions are:
                Are these really errors?
                If so, what can I do to fix them?
                If not, can I just tell Moz to ignore them or will this cause bigger problems?

                Technical SEO | | mfrgolfgti
                0
              • RocketStats

                "5XX (Server Error)" - How can I fix this?

                Hey Mozers! Moz Crawl tells me I am having an issue with my Wordpress category - it is returning a 5XX error and i'm not sure why? Can anyone help me determine the issue? Crawl Issues and Notices for: http://www.refusedcarfinance.com/news/category/news We found 1 crawler issue(s) for this page. High Priority Issues 1 5XX (Server Error) 5XX errors (e.g., a 503 Service Unavailable error) are shown when a valid request was made by the client, but the server failed to complete the request. This can indicate a problem with the server, and should be investigated and fixed.

                Technical SEO | | RocketStats
                0
              • Taiger

                ?_escaped_fragment_= Duplicate error in Webmaster

                Hi I am not sure where this came from ... ?escaped_fragment= But in webmaster we are seeing hundreds of pages with this and thus webmaster is saying that we have Pages with duplicate title tags How do I fix this, or remove it. Regards T

                Technical SEO | | Taiger
                0
              • Happy-SEO

                Images, CSS and Javascript on subdomain or external website

                Hi guy's, I came across webshops that put images, CSS and Javascript on different websites or subdomains. Does this boost SEO results? On our Wordpress webshop all the sourcescodes are placed after our own domainname: www.ourdomainname.com/wp-includes/js/jquery/jquery.js?ver=1.11.3'
                www.ourdomainname.com/wp-content/uploads/2015/09/example.jpg Examples of other website: Website 1:
                https://www.zalando.nl/heren-home/ Sourcecode:
                https://secure-i3.ztat.net//camp/03/d5/1a0168ac81f2ffb010803d108221.jpg
                https://secure-media.ztat.net/media/cms/adproduct/ad-product.min.css?_=1447764579000 Website 2:
                https://www.bol.com/nl/index.html Sourcecode:
                https://s.s-bol.com/nl/static/css/main/webselfservice.1358897755.css
                //s.s-bol.com/nl/upload/images/logos/bol-logo-500500.jpg Website 3: 
                http://www.wehkamp.nl/ Sourcecode:
                https://static.wehkamp.nl/assets/styles/themes/wehkamp.color.min.css?v=f47bf1
                http://assets.wehkamp.com/i/wehkamp/350-450-layer-SDD-wk51-v3.jpg

                Technical SEO | | Happy-SEO
                0
              • ReSEOlve

                404 errors

                Hi I am getting these show up in WMT crawl error any help would be very much appreciated | ?escaped_fragment=Meditation-find-peace-within/csso/55991bd90cf2efdf74ec3f60 | 404 | 12/5/15 |
                | | 2 | mobile/?escaped_fragment= | 404 | 10/26/15 |
                | | 3 | ?escaped_fragment=Tips-for-a-balanced-lifestyle/csso/1 | 404 | 12/1/15 |
                | | 4 | ?escaped_fragment=My-favorite-yoga-spot/csso/5598e2130cf2585ebcde3b9a | 404 | 12/1/15 |
                | | 5 | ?escaped_fragment=blog/c19s6 | 404 | 11/29/15 |
                | | 6 | ?escaped_fragment=blog/c19s6/Tag/yoga | 404 | 11/30/15 |
                | | 7 | ?escaped_fragment=Inhale-exhale-and-once-again/csso/2 | 404 | 11/27/15 |
                | | 8 | ?escaped_fragment=classes/covl | 404 | 10/29/15 |
                | | 9 | m/?escaped_fragment= | 404 | 10/26/15 |
                | | 10 | ?escaped_fragment=blog/c19s6/Page/1 | 404 | 11/30/15 | |   |

                Technical SEO | | ReSEOlve
                0
              • MissVe

                Is there a way of changing the Permalink without getting the 404 Error?

                Hi, I am new to this all.. Is there a way of changing the permalink for example from: domain/content/ to domain/profile/ without receiving the 404 error message. It's just that since my website has been developed, some pages and their content have changed but the permalink still shows the name of the old page which may be confusing. Ps. Please use most simple language for explanations as I am really new to it. Thank you! Ve

                Technical SEO | | MissVe
                0
              • anchorwave

                Best 404 Error Checker?

                I have a client with a lot of 404 errors from Web Master Tools, and i have to go through and check each of the links because Some redirect to the correct page Some redirect to another url but its a 404 error Some are just 404 errors Does anyone know of a tool where i can dump all of the urls and it will tell me If the url is redirected, and to where if the page is a 404 or other error Any tips or suggestions will be really appreciated! Thanks SEO Moz'rs

                Technical SEO | | anchorwave
                0
              • themegroup

                Robots.txt file getting a 500 error - is this a problem?

                Hello all! While doing some routine health checks on a few of our client sites, I spotted that a new client of ours - who's website was not designed built by us - is returning a 500 internal server error when I try to look at the robots.txt file. As we don't host / maintain their site, I would have to go through their head office to get this changed, which isn't a problem but I just wanted to check whether this error will actually be having a negative effect on their site / whether there's a benefit to getting this changed? Thanks in advance!

                Technical SEO | | themegroup
                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.