--- title: "What is a crawl error, and how can we fix it using webmaster tools?" description: "What is a crawl error, and how can we fix it using webmaster tools?" author: "Lily Chitlangiya" published: 2022-01-25 canonical: https://answers.mindstick.com/qa/95249/what-is-a-crawl-error-and-how-can-we-fix-it-using-webmaster-tools category: "troubleshooting" tags: ["webmaster tools", "google webmaster tools", "troubleshooting"] reading_time: 2 minutes --- # What is a crawl error, and how can we fix it using webmaster tools? What is a crawl [error](https://www.mindstick.com/forum/459/iis-7-error-503-service-unavailable), and how can we fix it using webmaster [tools](https://www.mindstick.com/articles/312253/essential-work-from-home-tools)? \ ## Answers ### Answer by Hitesh Vohra ![What is a crawl error, and how can we fix it using webmaster tools?](https://answers.mindstick.com/questionanswer/7e3da9c8-f28e-470f-983d-8b6607d65eba/images/2deb52bc-a3bd-48b9-8d85-a9ee2f45f5a4.jpeg) **\** **Crawl problems** happen when a search engine tries but fails to reach a page on your website. Let's take a closer look at crawling first. Crawling is the technique through which a search engine uses a bot to visit each and every page of your website. When a search engine bot discovers a connection to your website, it begins searching for all of your public pages. - **This page could not be found.-**This is also known as Error 404, and it is one of the most common mistakes that webmasters and visitors encounter. It simply signifies that the crawler attempted to crawl a page that has since been deleted or moved elsewhere on your domain. This can also be caused by a temporary URL. To avoid this type of issue, there is a terrific application that can assist you in locating these pages: URL parameter tool for [**webmasters**](https://answers.mindstick.com/qa/95253/how-do-i-fix-amp-issues-in-google-webmaster-tools). - **Robot Access is Restricted-**This indicates that the AdSense crawler attempted to crawl a domain or subdomain level page. Simply remove the following two lines from your robots.txt file to allow google crawler access :Allow: / User-agent: Media partners-Google - **Behind a Login's Content-**Many websites require login credentials in order to gain premium access to the site's core content. It usually signifies that a crawler login for that premium material hasn't been set up. - **For a site I don't manage, you have Ad Crawler Errors.** This warning indicates that your ad code is being used on another website without your authorization. The impressions and clicks will be counted, but no money will be paid. As a result, you will not be paid because this is not legal. Under Settings > Accounts and Authorization, you'll see this option. In 48 hours, expect to see changes. \ **Read More: [How do I fix the Google “No Crawl” issue?](https://answers.mindstick.com/qa/95252/how-do-i-fix-the-google-no-crawl-issue)** --- Original Source: https://answers.mindstick.com/qa/95249/what-is-a-crawl-error-and-how-can-we-fix-it-using-webmaster-tools Copyright © MindStick Software Pvt. Ltd. This Markdown version is provided for developers, AI systems, and offline reading.