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.

      Save 36% now!
      Moz Pro

      Save 36% now!

      Sign up
    • 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.

      Save 36% now!
      Moz Pro

      Save 36% now!

      Sign up
    • 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

      Access 20 years of data with flexible pricing
      Moz API

      Access 20 years of data with flexible pricing

      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
    1380
    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

              • tif-swedensky

                Unsolved Google Search Console Still Reporting Errors After Fixes

                google search console sitemaps 400 errors

                Hello, I'm working on a website that was too bloated with content. We deleted many pages and set up redirects to newer pages. We also resolved an unreasonable amount of 400 errors on the site. I also removed several ancient sitemaps that listed content deleted years ago that Google was crawling. According to Moz and Screaming Frog, these errors have been resolved. We've submitted the fixes for validation in GSC, but the validation repeatedly fails. What could be going on here? How can we resolve these error in GSC.

                Technical SEO | | tif-swedensky
                0
              • qgairsoft

                Are subdomains a good seo strategy for a multistore e-commerce?

                Hi there I'm wondering what is the best strategy to work with multi-stores on magento: to use or not to use subdomains? Suppose we have the www.website.com and we configure it to use multistore. The url base will not have the store id on it so it will not be like www.website.com/store1 and www.website.com/store2. It will simply rely on the user session so if we have two categories for each store it will acces using: www.website.com/category1 (for store 1) www.website.com/category2 (for store 2) The homepage will allways be set on www.website.com so we should have a single page for several "home pages" (depending on the user session / store he is accessing). I guess this is not a good option if we want to rank for different keywords (for each store). So I was wondering if it is a good solution to set: store1.website.com store2.website.com This way we have 2 "home pages" each one able to rank. Does it make sense? Is it good or bad for seo? Another option I was considering was: www.website.com (for store 1) store2.website.com (for store 2) store3.website.com (for store 3) www.website.com/blog (for blog) Can this work? Good or bad for seo? best regards

                Technical SEO | | qgairsoft
                0
              • SarahLK

                Removed Subdomain Sites Still in Google Index

                Hey guys, I've got kind of a strange situation going on and I can't seem to find it addressed anywhere.  I have a site that at one point had several development sites set up at subdomains.  Those sites have since launched on their own domains, but the subdomain sites are still showing up in the Google index.  However, if you look at the cached version of pages on these non-existent subdomains, it lists the NEW url, not the dev one in the little blurb that says "This is Google's cached version of www.correcturl.com."  Clearly Google recognizes that the content resides at the new location, so how come the old pages are still in the index?  Attempting to visit one of them gives a "Server Not Found" error, so they are definitely gone. This is happening to a couple of sites, one that was launched over a year ago so it doesn't appear to be a "wait and see" solution. Any suggestions would be a huge help.  Thanks!!

                Technical SEO | | SarahLK
                0
              • Taswirh

                Expired domain 404 crawl error

                I recently purchased a Expired domain from auction and after I started my new site on it, I am noticing 500+ "not found" errors in Google Webmaster Tools, which are generating from the previous owner's contents.Should I use a redirection plugin to redirect those non-exist posts to any new post(s) of my site? or I should use a 301 redirect? or I should leave them just as it is without taking further action? Please advise.

                Technical SEO | | Taswirh
                1
              • jamesm5i

                "Fourth-level" subdomains. Any negative impact compared with regular "third-level" subdomains?

                Hey moz New client has a site that uses: subdomains ("third-level" stuff like location.business.com) and; "fourth-level" subdomains (location.parent.business.com) Are these fourth-level addresses at risk of being treated differently than the other subdomains? Screaming Frog, for example, doesn't return these fourth-level addresses when doing a crawl for business.com except in the External tab. But maybe I'm just configuring the crawls incorrectly. These addresses rank, but I'm worried that we're losing some link juice along the way. Any thoughts would be appreciated!

                Technical SEO | | jamesm5i
                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
              • Nightwing

                Diagnosing Canonical Errors Is Screaming frog reliable?

                Morning from suny & warm wetherby UK 🙂 On this page http://www.goldsboroughestates.co.uk/how-we-care-for-you/right-to-manage/ screaming frog is citing a canonical error but I'm confused as this piece of code is in place: http://www.goldsboroughestates.co.uk/About/right-to-manage" /> So my question is please - "Does this page  http://www.goldsboroughestates.co.uk/how-we-care-for-you/right-to-manage/ have a caninical error or is screaming frog useless? Other examples where screaming frog is picking up canonical errors include:
                http://www.goldsboroughestates.co.uk/what-our-customers-say/right-to-manage/
                http://www.goldsboroughestates.co.uk/buying-a-home/right-to-manage/ Oh forgot to say the preffered version is http://www.goldsboroughestates.co.uk/About/right-to-manage/ Any insights welcvome 🙂

                Technical SEO | | Nightwing
                0
              • ErnieB

                Subdomain Removal in Robots.txt with Conditional Logic??

                I would like to see if there is a way to add conditional logic to the robots.txt file so that when we push from DEV to PRODUCTION and the robots.txt file is pushed, we don't have to remember to NOT push the robots.txt file OR edit it when it goes live. My specific situation is this: I have www.website.com, dev.website.com and new.website.com and somehow google has indexed the DEV.website.com and NEW.website.com and I'd like these to be removed from google's index as they are causing duplicate content. Should I: a) add 2 new GWT entries for DEV.website.com and NEW.website.com and VERIFY ownership - if I do this, then when the files are pushed to LIVE won't the files contain the VERIFY META CODE for the DEV version even though it's now LIVE? (hope that makes sense) b) write a robots.txt file that specifies "DISALLOW: DEV.website.com/" is that possible? I have only seen examples of DISALLOW with a "/" in the beginning... Hope this makes sense, can really use the help!  I'm on a Windows Server 2008 box running ColdFusion websites.

                Technical SEO | | ErnieB
                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.