{"id":24209,"date":"2024-02-13T18:00:40","date_gmt":"2024-02-13T10:00:40","guid":{"rendered":"https:\/\/www.hongkiat.com\/blog\/?p=24209"},"modified":"2024-02-13T16:07:11","modified_gmt":"2024-02-13T08:07:11","slug":"common-http-errors","status":"publish","type":"post","link":"https:\/\/www.hongkiat.com\/blog\/common-http-errors\/","title":{"rendered":"Understanding 404 and Other Common HTTP Errors"},"content":{"rendered":"<p>Have you ever encountered a puzzling \u201c404 Not Found\u201d message or other HTTP errors while browsing the web and wondered what they actually mean? Understanding HTTP status codes is not just a curiosity \u2013 it\u2019s a necessity for website owners and tech enthusiasts alike. In this comprehensive guide, we\u2019ll dive deep into the world of <a href=\"https:\/\/www.hongkiat.com\/blog\/http-status-codes\/\">HTTP errors<\/a>, from the well-known 404 to the more obscure 500 series.<\/p>\n<p>Our aim is to demystify these error messages, explain their causes, and provide practical solutions for both web users and website administrators. Whether you\u2019re looking to enhance your website\u2019s user experience, improve its SEO, or simply satisfy your tech curiosity, this guide has got you covered. Let\u2019s explore the fascinating world behind these error codes and learn how to effectively manage them for a smoother web experience.<\/p>\n<hr>\n<h2>Decoding Status Codes<\/h2>\n<p>Every error page online is associated with an HTTP status code from the server. These codes are three-digit numbers, with the first digit defining the code\u2019s category:<\/p>\n<ul>\n<li><strong>1XX<\/strong> status codes are informational<\/li>\n<li><strong>2XX<\/strong> signals successful operations<\/li>\n<li><strong>3XX<\/strong> denotes redirections<\/li>\n<\/ul>\n<p><strong>These first three categories don\u2019t lead to HTML error pages<\/strong>. In these cases, <strong>the client knows the next steps<\/strong> and proceeds without issue. The more noticeable codes are the 4XX and 5XX types:<\/p>\n<ul>\n<li><strong>4XX<\/strong> codes point to client-side errors<\/li>\n<li><strong>5XXs<\/strong> indicate server-side issues<\/li>\n<\/ul>\n<p>HTML error pages appear in these scenarios because <strong>the client is unsure of how to proceed<\/strong>. Let\u2019s delve into what occurs behind the scenes during these errors and how to handle them.<\/p>\n<hr>\n<h2>Client-Side Errors (4XX)<\/h2>\n<h3>400 \u2013 Bad Request<\/h3>\n<p>When a server can\u2019t understand a request from the client, a 400 <em>Bad Request<\/em> error appears. This often occurs when <strong>the browser\u2019s data doesn\u2019t follow the HTTP protocol rules<\/strong>, leading to a request with malformed syntax.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/400.jpg\" alt=\"400 Bad Request Error Page\" title=\"400 - Bad Request\" width=\"700\" height=\"399\"><\/figure>\n<p>A 400 error typically suggests <strong>an issue on the client side<\/strong>, like a compromised operating system, unstable internet connection, browser errors, or cache issues. It\u2019s wise to troubleshoot your device first-try opening the webpage in a different browser, clear the cache, or check for security updates. Consistent 400 errors across various sites might signal the need for a thorough security check of your PC or Mac.<\/p>\n<h3>401 \u2013 Authorization Required<\/h3>\n<p>A 401<em> Authorization Required<\/em> code appears when accessing a password-protected webpage. Initially, you\u2019ll see a popup for login credentials rather than a direct error message.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/401.jpg\" alt=\"401 Authorization Required Page\" title=\"401 - Authorization Required\" width=\"700\" height=\"398\"><\/figure>\n<p>If you have the right credentials, you can access the site. If not, you\u2019ll be redirected to the <em>Authorization Required<\/em> error page. For website owners, you can implement this protection through your <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/cpanel.net\/\">cPanel<\/a> account.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/401_cpanel.jpg\" alt=\"Setting Password Protection in cPanel\" title=\"Set password protection in cPanel\" width=\"700\" height=\"495\"><\/figure>\n<p>To add password protection, go to the <strong>\u201cPassword Protect Directories\u201d<\/strong> option in the <strong>\u201cSecurity\u201d<\/strong> section of cPanel. This is an effective way to secure areas like the <strong>wp-admin<\/strong> folder in WordPress sites.<\/p>\n<h3>403 \u2013 Forbidden<\/h3>\n<p>The 403 <em>Forbidden<\/em> error occurs when the server refuses a client\u2019s request without an explanation. It\u2019s not due to malformed requests or authorization issues.<\/p>\n<p>Common causes include restrictions set by website owners against browsing the site\u2019s file directory or certain files not being permitted for web viewing.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/403.jpg\" alt=\"403 Forbidden Error Page\" title=\"403 - Forbidden\" width=\"700\" height=\"399\"><\/figure>\n<p>Setting up a 403 error can enhance your website\u2019s security by <strong>concealing its directory structure or sensitive files<\/strong>. Many web hosts offer this protection by default. To add it manually, access the <strong>Advanced<\/strong> section in cPanel and select <strong>Index Manager<\/strong>.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/403_cpanel.jpg\" alt=\"Configuring Index Manager in cPanel\" title=\"Index Manager in cPanel\" width=\"700\" height=\"271\"><\/figure>\n<p>Here, you can control how visitors interact with specific directories on your site. Choosing <strong>No Indexing<\/strong> will result in a 403 error for anyone trying to access that directory.<\/p>\n<h3>404 \u2013 Not Found<\/h3>\n<p>The 404 error is the most recognizable HTTP status code. It\u2019s displayed by the browser <strong>when the server can\u2019t find the requested location<\/strong>. This can happen if a visitor <strong>mistypes the URL<\/strong>, or the site\u2019s permalink structure has changed, leaving old links pointing to non-existent pages. Sometimes, 404s occur on top-level URLs, often due to a recent server move where the <strong>DNS still points to the old location<\/strong>. These issues generally resolve themselves quickly.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/404.jpg\" alt=\"404 Not Found Error Page\" title=\"404 - Not Found\" width=\"700\" height=\"399\"><\/figure>\n<p>Despite some SEO experts suggesting otherwise, Google <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/support.google.com\/webmasters\/answer\/9128668?visit_id=638011806092401397-548580708&hl=en&rd=3\">states<\/a> that \u201c404 errors don\u2019t impact your site\u2019s ranking in Google, and you can safely ignore them.\u201d However, it\u2019s still beneficial to minimize 404s as they can <strong>increase your site\u2019s bounce rate<\/strong>. A common solution is to use 301 redirects for permanently removed pages and 302 redirects for temporarily unavailable ones.<\/p>\n<p><strong>Read also:<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/www.hongkiat.com\/blog\/60-really-cool-and-creative-error-404\/\">Creative Error 404 Pages \u2013 Part I<\/a><\/li>\n<li><a href=\"https:\/\/www.hongkiat.com\/blog\/funny-creative-error-404\/\">Creative Error 404 Pages \u2013 Part II<\/a><\/li>\n<\/ul>\n<h3>408 \u2013 Request Time-Out<\/h3>\n<p>A 408 <em>Request Time-Out<\/em> error occurs when a client\u2019s request takes too long, leading the server to time out and close the connection. This happens if the server doesn\u2019t receive a complete request <strong>within its waiting timeframe<\/strong>. Persistent 408 errors could be due to <strong>heavy loads on the server or the client\u2019s system<\/strong>.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/408.jpg\" alt=\"408 Request Time-Out Page\" title=\"408 - Request Time-Out\" width=\"700\" height=\"399\"><\/figure>\n<p>Occasionally, both the client and server are functioning correctly, but <strong>temporary internet surges<\/strong> can delay message delivery. Like with 404s, many websites customize their 408 error pages. Typically, a simple page refresh using the F5 button can resolve a 408 error.<\/p>\n<h3>410 \u2013 Gone<\/h3>\n<p>The 410 <em>Gone<\/em> error is similar to the 404 but with a key difference. While both indicate <strong>the server can\u2019t find the requested file<\/strong>, the 410 error explicitly signifies a <strong>permanent condition<\/strong>. It tells the client that the resource was deliberately made unavailable and that any incoming links should be removed. Unlike the 404, which leaves room for uncertainty about the file\u2019s permanence, a 410 error is a definitive statement.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/410.jpg\" alt=\"410 Gone Error Page\" title=\"410 - Gone\" width=\"700\" height=\"399\"><\/figure>\n<p>For those managing servers, it\u2019s important to know how Google crawlers differentiate between 404s and 410s. In <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/www.youtube.com\/watch?v=xp5Nf8ANfOw\" title=\"Does Google treat 404 and 410 status codes differently?\">this video<\/a>, Matt Cutts from Google discusses this distinction. Properly differentiating between 404 and 410 errors can <strong>improve your site\u2019s standing with Google<\/strong>.<\/p>\n<hr>\n<h2>Server Errors (5XX)<\/h2>\n<h3>500 \u2013 Internal Server Error<\/h3>\n<p>The 500 <em>Internal Server Error<\/em> is a common server-side error that arises from an <strong>unexpected issue<\/strong> preventing the server from fulfilling a request. As a catch-all error, it\u2019s used when <strong>other specific 5XX server-side errors don\u2019t apply<\/strong>.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/500.jpg\" alt=\"500 Internal Server Error Page\" title=\"500 - Internal Server Error\" width=\"700\" height=\"399\"><\/figure>\n<p>Even though the issue is server-related, you can try actions like <strong>reloading the page<\/strong>, <strong>clearing your browser\u2019s cache<\/strong>, or <strong>deleting cookies and restarting the browser<\/strong> to resolve it. If the problem persists, inform the webmaster. If you encounter this error on your own site, check for a <strong>permission error<\/strong>, a <strong>corrupt .htaccess file<\/strong>, or a <strong>low memory limit<\/strong>. WordPress users should also consider a problematic <strong>third-party plugin<\/strong> and deactivate plugins one at a time to identify the issue.<\/p>\n<h3>502 \u2013 Bad Gateway<\/h3>\n<p>The 502 error occurs due to communication issues between two servers. It happens when the <strong>client connects to a server acting as a gateway or proxy<\/strong>, which then tries to access an upstream server for additional services. An example is an Apache server accessed by a proxy server, or a large ISP\u2019s name server accessed by a local name server.<\/p>\n<p>Encountering a <em>Bad Gateway<\/em> error means the server <strong>received an invalid response from an upstream server<\/strong>.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/502.jpg\" alt=\"502 Bad Gateway Error Page\" title=\"502 - Bad Gateway\" width=\"700\" height=\"399\"><\/figure>\n<p>This error typically indicates a disagreement in data exchange protocols between servers rather than an outright failure of the upstream server. Contact your hosting provider if you see a 502 error on your site.<\/p>\n<h3>503 \u2013 Service Temporarily Unavailable<\/h3>\n<p>The 503 <em>Service Temporarily Unavailable<\/em> error appears during server overloads or maintenance periods, indicating the server is currently unavailable but the condition is temporary.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/503.jpg\" alt=\"503 Service Temporarily Unavailable Page\" title=\"503 - Service Temporarily Unavailable\" width=\"700\" height=\"399\"><\/figure>\n<p>Website owners should be knowledgeable about the 503 status to manage scheduled maintenance properly, as improper handling can affect the site\u2019s search engine ranking. For guidance, refer to tutorials on Yoast\u2019s SEO blog or moz.com.<\/p>\n<p>Learn how to handle this at <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/yoast.com\/http-503-site-maintenance-seo\/\" title=\"HTTP 503:Handling site maintenance correctly for SEO\">Yoast<\/a> and <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/moz.com\/blog\/how-to-handle-downtime-during-site-maintenance\" title=\"How to handle downtime during site maintenance\">Moz<\/a>.<\/p>\n<h3>504 \u2013 Gateway Time-Out<\/h3>\n<p>The 504 <em>Gateway Time-Out<\/em> error is another server-server communication issue, similar to the 502 error. It occurs when a lower-level server doesn\u2019t receive a timely response from an upstream server it\u2019s trying to access.<\/p>\n<p>This time-out issue, akin to the 408 <em>Request Time-Out<\/em> error between client and server, usually signals <strong>slow communication<\/strong> between the two servers or the possibility that the <strong>upstream server is down<\/strong>.<\/p>\n<figure><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/504.jpg\" alt=\"504 Gateway Time-Out Error Page\" title=\"504 - Gateway Time-Out\" width=\"700\" height=\"399\"><\/figure>\n<p>As 504 errors involve network issues beyond typical user control, addressing them requires access to the network\u2019s backend. In many cases, simply refreshing the page after a few minutes can resolve the issue, assuming the service providers are actively working on the problem.<\/p>\n<hr>\n<h2>Wrapping Up<\/h2>\n<p>In conclusion, understanding HTTP status codes is more than a technical necessity; it\u2019s an essential part of creating a seamless online experience for both website owners and visitors. From the common 404 Not Found to the more complex 500 Internal Server Error, each code offers valuable insights into the health and functionality of a website. By effectively recognizing and addressing these errors, website administrators can significantly enhance site performance, improve user satisfaction, and maintain optimal SEO rankings.<\/p>\n<p>Remember, each error code is an opportunity to troubleshoot, improve, and evolve your website. Armed with the knowledge from this guide, you\u2019re now better equipped to handle these challenges and ensure that your site remains accessible, efficient, and user-friendly. Let\u2019s embrace these codes not as hurdles, but as stepping stones towards a more robust and resilient web presence.<\/p>","protected":false},"excerpt":{"rendered":"<p>Learn how to troubleshoot common HTTP errors with our comprehensive guide. Improve your website&#8217;s performance and user experience today!<\/p>\n","protected":false},"author":146,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3400],"tags":[4571],"topic":[4521],"class_list":["entry-content","is-maxi"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.8 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Understanding 404 and Other Common HTTP Errors - Hongkiat<\/title>\n<meta name=\"description\" content=\"Learn how to troubleshoot common HTTP errors with our comprehensive guide. Improve your website&#039;s performance and user experience today!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hongkiat.com\/blog\/common-http-errors\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Understanding 404 and Other Common HTTP Errors\" \/>\n<meta property=\"og:description\" content=\"Learn how to troubleshoot common HTTP errors with our comprehensive guide. Improve your website&#039;s performance and user experience today!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.hongkiat.com\/blog\/common-http-errors\/\" \/>\n<meta property=\"og:site_name\" content=\"Hongkiat\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/hongkiatcom\" \/>\n<meta property=\"article:published_time\" content=\"2024-02-13T10:00:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/assets.hongkiat.com\/uploads\/common-http-errors\/400.jpg\" \/>\n<meta name=\"author\" content=\"Anna Monus\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@hongkiat\" \/>\n<meta name=\"twitter:site\" content=\"@hongkiat\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Anna Monus\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.hongkiat.com\\\/blog\\\/common-http-errors\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.hongkiat.com\\\/blog\\\/common-http-errors\\\/\"},\"author\":{\"name\":\"Anna Monus\",\"@id\":\"https:\\\/\\\/www.hongkiat.com\\\/blog\\\/#\\\/schema\\\/person\\\/a601053a0ab457901e00cdc83bd5359e\"},\"headline\":\"Understanding 404 and Other Common HTTP Errors\",\"datePublished\":\"2024-02-13T10:00:40+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.hongkiat.com\\\/blog\\\/common-http-errors\\\/\"},\"wordCount\":1455,\"commentCount\":8,\"publisher\":{\"@id\":\"https:\\\/\\\/www.hongkiat.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.hongkiat.com\\\/blog\\\/common-http-errors\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/assets.hongkiat.com\\\/uploads\\\/common-http-errors\\\/400.jpg\",\"keywords\":[\"Error 404 Pages\"],\"articleSection\":[\"Hosting\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.hongkiat.com\\\/blog\\\/common-http-errors\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.hongkiat.com\\\/blog\\\/common-http-errors\\\/\",\"url\":\"https:\\\/\\\/www.hongkiat.com\\\/blog\\\/common-http-errors\\\/\",\"name\":\"Understanding 404 and Other Common HTTP Errors - Hongkiat\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.hongkiat.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.hongkiat.com\\\/blog\\\/common-http-errors\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.hongkiat.com\\\/blog\\\/common-http-errors\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/assets.hongkiat.com\\\/uploads\\\/common-http-errors\\\/400.jpg\",\"datePublished\":\"2024-02-13T10:00:40+00:00\",\"description\":\"Learn how to troubleshoot common HTTP errors with our comprehensive guide. 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