{"id":2253,"date":"2026-09-23T17:30:00","date_gmt":"2026-09-23T14:30:00","guid":{"rendered":"https:\/\/narhost.com\/destek\/?p=2253"},"modified":"2026-09-23T17:30:00","modified_gmt":"2026-09-23T14:30:00","slug":"400-bad-request-hatasi-nasil-cozulur","status":"publish","type":"post","link":"https:\/\/narhost.com\/destek\/400-bad-request-hatasi-nasil-cozulur\/","title":{"rendered":"400 Bad Request Hatas\u0131 Nas\u0131l \u00c7\u00f6z\u00fcl\u00fcr (cPanel)"},"content":{"rendered":"<p class=\"kb-dogrulama\">Son do\u011frulama: Eyl\u00fcl 2026 \u00b7 cPanel 136 test hesab\u0131nda denendi<\/p>\n<div id=\"hizli-cozum\" class=\"ai-box ai-box--cozum\">\n<p class=\"ai-box-title\">H\u0131zl\u0131 \u00e7\u00f6z\u00fcm<\/p>\n<p><code>400 Bad Request<\/code> mesaj\u0131, sunucunun iste\u011finizi i\u015flemeden \u00f6nce bozuk bulup reddetti\u011fi anlam\u0131na gelir; <strong>400 bad request hatas\u0131<\/strong> \u00e7o\u011funlukla bozuk ya da \u00e7ok b\u00fcy\u00fck bir \u00e7erezden, \u00e7ok uzun bir URL&#8217;den ya da hatal\u0131 bi\u00e7imlendirilmi\u015f bir istekten kaynaklan\u0131r.<\/p>\n<ol>\n<li>Sitenin \u00e7erezlerini ve taray\u0131c\u0131 \u00f6nbelle\u011fini temizleyip sayfay\u0131 yeniden y\u00fckleyin.<\/li>\n<li>Farkl\u0131 bir taray\u0131c\u0131 ya da gizli sekmede ayn\u0131 adresi a\u00e7\u0131p hatan\u0131n tekrarlay\u0131p tekrarlamad\u0131\u011f\u0131na bak\u0131n.<\/li>\n<li>Adres \u00e7ubu\u011fundaki URL&#8217;de bo\u015fluk, sat\u0131r sonu ya da yanl\u0131\u015f kodlanm\u0131\u015f karakter olup olmad\u0131\u011f\u0131n\u0131 kontrol edin.<\/li>\n<li>Sorun s\u00fcr\u00fcyorsa cPanel \u2192 \u00d6l\u00e7\u00fcmler \u2192 Hatalar sayfas\u0131ndan reddedilen iste\u011fi bulun.<\/li>\n<\/ol>\n<\/div>\n<table class=\"kb-uyg\">\n<tr>\n<th>Panel<\/th>\n<td>cPanel<\/td>\n<\/tr>\n<tr>\n<th>Sistem<\/th>\n<td>Payla\u015f\u0131ml\u0131 hosting (Apache yap\u0131land\u0131rmas\u0131, .htaccess)<\/td>\n<\/tr>\n<tr>\n<th>Yetki<\/th>\n<td>cPanel kullan\u0131c\u0131s\u0131; taray\u0131c\u0131 taraf\u0131 ad\u0131mlar i\u00e7in ziyaret\u00e7i\/site sahibi<\/td>\n<\/tr>\n<tr>\n<th>Narhost \u00fcr\u00fcn\u00fc<\/th>\n<td><a href=\"https:\/\/narhost.com\/web-hosting\" title=\"Narhost Web Hosting paketleri\">Web Hosting<\/a><\/td>\n<\/tr>\n<\/table>\n<div class=\"kb-once\">\n<p class=\"label\">Ba\u015flamadan \u00f6nce<\/p>\n<ul>\n<li>Hatan\u0131n hangi sayfada, hangi i\u015flemde (giri\u015f, form g\u00f6nderimi, dosya y\u00fckleme) \u00e7\u0131kt\u0131\u011f\u0131n\u0131 not edin.<\/li>\n<li>Kulland\u0131\u011f\u0131n\u0131z taray\u0131c\u0131 ve s\u00fcr\u00fcm\u00fcn\u00fc bilin; farkl\u0131 bir taray\u0131c\u0131da test edeceksiniz.<\/li>\n<li>Panel taraf\u0131 kontrol gerekiyorsa cPanel giri\u015f bilgileriniz elinizde olsun.<\/li>\n<li>Son yapt\u0131\u011f\u0131n\u0131z de\u011fi\u015fikli\u011fi hat\u0131rlay\u0131n: yeni bir eklenti, .htaccess d\u00fczenlemesi ya da form entegrasyonu.<\/li>\n<\/ul>\n<\/div>\n<h2>400 bad request hatas\u0131 ne anlama gelir, neden olur?<\/h2>\n<p>Bu hata, sunucunuzun iste\u011fi hi\u00e7 i\u015flemeye ba\u015flamadan &#8220;bu istek bozuk, anlayam\u0131yorum&#8221; demesidir; 403 ya da 404&#8217;ten farkl\u0131d\u0131r, \u00e7\u00fcnk\u00fc sunucu size yetki ya da i\u00e7erik durumu bile bildirmez. En s\u0131k d\u00f6rt nedeni vard\u0131r: <strong>bozuk ya da \u00e7ok b\u00fcy\u00fck \u00e7erez<\/strong> (\u00f6zellikle uzun s\u00fcredir temizlenmemi\u015f oturum ve eklenti \u00e7erezleri birikince), <strong>\u00e7ok uzun URL ya da HTTP ba\u015fl\u0131\u011f\u0131<\/strong> (Apache&#8217;nin <code>LimitRequestLine<\/code> ve <code>LimitRequestFieldSize<\/code> s\u0131n\u0131rlar\u0131n\u0131 a\u015fmas\u0131), <strong>hatal\u0131 bi\u00e7imlendirilmi\u015f istek g\u00f6vdesi<\/strong> (bozuk form verisi ya da yar\u0131m kalan dosya y\u00fcklemesi) ve <strong>URL&#8217;de izin verilmeyen karakter<\/strong> (kodlanmam\u0131\u015f bo\u015fluk ya da \u00f6zel karakter).<\/p>\n<p><strong>Ziyaret\u00e7iyseniz<\/strong> nedeni genelde taray\u0131c\u0131n\u0131zdaki \u00e7erez ya da \u00f6nbelle\u011fe y\u0131\u011f\u0131lan eski veridir. <strong>Site sahibiyseniz<\/strong> \u00f6nce taray\u0131c\u0131 taraf\u0131n\u0131 eleyip sonra sunucu limitlerini ve hata g\u00fcnl\u00fc\u011f\u00fcn\u00fc kontrol edersiniz. MDN&#8217;in <a href=\"https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/HTTP\/Reference\/Status\/400\" title=\"MDN - HTTP 400 Bad Request durum kodu\" target=\"_blank\" rel=\"noopener\">400 durum kodu tan\u0131m\u0131<\/a> istemci kaynakl\u0131 bu hatan\u0131n protokol d\u00fczeyindeki kar\u015f\u0131l\u0131\u011f\u0131n\u0131 a\u00e7\u0131klar.<\/p>\n<h2>Ad\u0131m ad\u0131m \u00e7\u00f6z\u00fcm: 400 bad request hatas\u0131 nas\u0131l giderilir<\/h2>\n<ol class=\"kb-adimlar\">\n<li><strong>\u00c7erezi ve \u00f6nbelle\u011fi temizleyin.<\/strong> Taray\u0131c\u0131 ayarlar\u0131ndan yaln\u0131zca ilgili siteye ait \u00e7erezleri silin; b\u00fcy\u00fck \u00e7erez birikimi 400 hatas\u0131n\u0131n en s\u0131k nedenidir.\n<p class=\"kb-cikti\">Beklenen sonu\u00e7: \u00e7erez silinince sayfa normal y\u00fckleniyorsa neden buydu.<\/p>\n<figure class=\"kb-ekran\"><img decoding=\"async\" src=\"https:\/\/narhost.com\/destek\/wp-content\/uploads\/2026\/09\/400-bad-request-hatasi-nasil-cozulur-adim-1.webp\" alt=\"cPanel Dosya Y\u00f6neticisi'nde 400 bad request hatas\u0131 i\u00e7in .htaccess dosyas\u0131n\u0131 d\u00fczenleme\" width=\"1200\" height=\"833\" loading=\"lazy\"><figcaption>Dosya Y\u00f6neticisi sayfas\u0131; .htaccess dosyas\u0131 burada d\u00fczenlenir.<\/figcaption><\/figure>\n<\/li>\n<li><strong>Farkl\u0131 taray\u0131c\u0131 ya da gizli sekmede test edin.<\/strong> Chrome, Firefox ya da Edge&#8217;in gizli\/InPrivate penceresinde ayn\u0131 adresi a\u00e7\u0131n; bu pencerede eski \u00e7erez ve \u00f6nbellek yoktur.\n<p class=\"kb-cikti\">Beklenen sonu\u00e7: gizli sekmede hata \u00e7\u0131km\u0131yorsa sorun mevcut taray\u0131c\u0131 profilinizdedir.<\/p>\n<figure class=\"kb-ekran\"><img decoding=\"async\" src=\"https:\/\/narhost.com\/destek\/wp-content\/uploads\/2026\/09\/400-bad-request-hatasi-nasil-cozulur-adim-2.webp\" alt=\"cPanel Hatalar sayfas\u0131nda 400 bad request hatas\u0131 ile ilgili reddedilen istek sat\u0131r\u0131\" width=\"1200\" height=\"396\" loading=\"lazy\"><figcaption>cPanel Hatalar sayfas\u0131; reddedilen iste\u011fin URL&#8217;si ve zaman\u0131 burada g\u00f6r\u00fcn\u00fcr.<\/figcaption><\/figure>\n<\/li>\n<li><strong>URL&#8217;yi kontrol edin.<\/strong> Adres \u00e7ubu\u011funa elle yaz\u0131lm\u0131\u015f ya da bir e-postadan kopyalanm\u0131\u015f adreste bo\u015fluk, sat\u0131r sonu, T\u00fcrk\u00e7e karakter ya da kodlanmam\u0131\u015f \u00f6zel karakter olmad\u0131\u011f\u0131ndan emin olun.\n<p class=\"kb-cikti\">Beklenen sonu\u00e7: temiz bir URL ile a\u00e7t\u0131\u011f\u0131n\u0131zda hata kayboluyorsa adres bozuktu.<\/p>\n<\/li>\n<li><strong>.htaccess ve sunucu limitlerini g\u00f6zden ge\u00e7irin.<\/strong> cPanel \u2192 Dosyalar \u2192 Dosya Y\u00f6neticisi&#8217;nden <code>.htaccess<\/code> dosyas\u0131n\u0131 a\u00e7\u0131n; yak\u0131n zamanda eklenen bir kural (y\u00f6nlendirme, rewrite) \u00e7ok uzun bir URL \u00fcretiyor olabilir, kural\u0131 ge\u00e7ici olarak kald\u0131r\u0131p test edin.\n<p class=\"kb-cikti\">Beklenen sonu\u00e7: kural kald\u0131r\u0131l\u0131nca hata kayboluyorsa neden .htaccess kural\u0131yd\u0131.<\/p>\n<\/li>\n<li><strong>cPanel Hatalar sayfas\u0131nda iste\u011fi bulun.<\/strong> cPanel \u2192 \u00d6l\u00e7\u00fcmler \u2192 Hatalar sayfas\u0131 reddedilen iste\u011fin URL&#8217;sini ve zaman\u0131n\u0131 genelde do\u011frudan yazar.\n<p class=\"kb-cikti\">Beklenen sonu\u00e7: g\u00fcnl\u00fckte &#8220;request header\/line too large&#8221; gibi bir sat\u0131r g\u00f6r\u00fcrseniz neden URL ya da ba\u015fl\u0131k uzunlu\u011fudur.<\/p>\n<\/li>\n<\/ol>\n<div class=\"warn-box\">\n<p class=\"label\">Dikkat<\/p>\n<p>.htaccess dosyas\u0131n\u0131 d\u00fczenlemeden \u00f6nce bir kopyas\u0131n\u0131 indirin; yanl\u0131\u015f bir sat\u0131r sitenin tamam\u0131n\u0131 500 hatas\u0131na d\u00fc\u015f\u00fcrebilir.<\/p>\n<\/div>\n<h2>Do\u011frulama<\/h2>\n<div class=\"success-box\">\n<p class=\"label\">Sonu\u00e7<\/p>\n<p>\u00c7erez temizlendikten, gizli sekmede test edildikten ve gerekiyorsa .htaccess kural\u0131 d\u00fczeltildikten sonra sayfa farkl\u0131 taray\u0131c\u0131lardan art arda hatas\u0131z a\u00e7\u0131l\u0131yorsa ve cPanel Hatalar sayfas\u0131nda ayn\u0131 sat\u0131r yeni bir zaman damgas\u0131yla tekrarlam\u0131yorsa sorun \u00e7\u00f6z\u00fclm\u00fc\u015ft\u00fcr.<\/p>\n<\/div>\n<h2>H\u00e2l\u00e2 \u00e7\u00f6z\u00fclmediyse<\/h2>\n<ul>\n<li><strong>Hata yaln\u0131zca \u00f6deme sayfas\u0131nda \u00e7\u0131k\u0131yor.<\/strong> WooCommerce kullan\u0131yorsan\u0131z neden sanal POS entegrasyonunda olabilir; <a href=\"https:\/\/narhost.com\/destek\/kredi-karti-ve-sanal-pos-hatalari-woocommerce-odeme-sistemi-nasil-duzeltilir\/\" title=\"Kredi Kart\u0131 ve Sanal POS Hatalar\u0131: WooCommerce \u00d6deme Sistemi Nas\u0131l D\u00fczeltilir? - Narhost Destek\">WooCommerce \u00f6deme hatalar\u0131 kart\u0131na<\/a> bak\u0131n.<\/li>\n<li><strong>Hata yaln\u0131zca ileti\u015fim formunda \u00e7\u0131k\u0131yor.<\/strong> Form eklentisi bozuk veri g\u00f6nderiyor olabilir; <a href=\"https:\/\/narhost.com\/destek\/wordpress-iletisim-formu-hatalarini-giderme-yollari-nelerdir\/\" title=\"WordPress \u0130leti\u015fim Formu \u00c7al\u0131\u015fm\u0131yor Hatas\u0131 Nas\u0131l Giderilir - Narhost Destek\">WordPress ileti\u015fim formu kart\u0131na<\/a> ge\u00e7in.<\/li>\n<li><strong>Sayfa 400 de\u011fil, 403 Forbidden veriyor.<\/strong> Farkl\u0131 bir belirtidir; <a href=\"https:\/\/narhost.com\/destek\/403-forbidden-hatasi-nasil-cozulur\/\" title=\"403 Forbidden hatas\u0131 nas\u0131l \u00e7\u00f6z\u00fcl\u00fcr (cPanel) - Narhost Destek\">403 Forbidden kart\u0131na<\/a> bak\u0131n.<\/li>\n<li><strong>Sayfa 400 de\u011fil, 404 Not Found veriyor.<\/strong> Adres bulunam\u0131yordur, istek reddedilmiyordur; <a href=\"https:\/\/narhost.com\/destek\/404-not-found-hatasi-nasil-giderilir\/\" title=\"404 Not Found hatas\u0131 nas\u0131l giderilir - Narhost Destek\">404 kart\u0131na<\/a> ge\u00e7in.<\/li>\n<\/ul>\n<div class=\"cta-box\">\n<p class=\"label\">Narhost deste\u011fi<\/p>\n<p>Ad\u0131mlar\u0131 uygulad\u0131ktan sonra hata devam ediyorsa destek talebi a\u00e7\u0131n; talebe alan ad\u0131n\u0131z\u0131, hatan\u0131n \u00e7\u0131kt\u0131\u011f\u0131 tam URL&#8217;yi, saati ve denedi\u011finiz ad\u0131mlar\u0131 ekleyin.<\/p>\n<p><a class=\"cta-btn\" href=\"https:\/\/narhost.com\/submitticket.php\" title=\"Narhost destek talebi a\u00e7\">Destek talebi a\u00e7<\/a><\/div>\n<div class=\"kb-ilgili\">\n<p class=\"label\">Sonraki ad\u0131mlar<\/p>\n<ul>\n<li><a href=\"https:\/\/narhost.com\/destek\/site-bazen-acilmiyorsa-ne-yapilmali\/\" title=\"Site a\u00e7\u0131lm\u0131yor - ad\u0131m ad\u0131m te\u015fhis rehberi - Narhost Destek\">Site a\u00e7\u0131lm\u0131yor \u2014 ad\u0131m ad\u0131m te\u015fhis rehberi<\/a><\/li>\n<li><a href=\"https:\/\/narhost.com\/destek\/cpanel-hata-gunlukleri-inceleme\/\" title=\"cPanel Hata G\u00fcnl\u00fckleri (Error Logs) Nas\u0131l \u0130ncelenir - Narhost Destek\">cPanel hata g\u00fcnl\u00fckleri nas\u0131l incelenir<\/a><\/li>\n<li><a href=\"https:\/\/narhost.com\/destek\/403-forbidden-hatasi-nasil-cozulur\/\" title=\"403 Forbidden hatas\u0131 nas\u0131l \u00e7\u00f6z\u00fcl\u00fcr (cPanel) - Narhost Destek\">403 Forbidden hatas\u0131 nas\u0131l \u00e7\u00f6z\u00fcl\u00fcr<\/a><\/li>\n<li><a href=\"https:\/\/narhost.com\/destek\/404-not-found-hatasi-nasil-giderilir\/\" title=\"404 Not Found hatas\u0131 nas\u0131l giderilir - Narhost Destek\">404 Not Found hatas\u0131 nas\u0131l giderilir<\/a><\/li>\n<\/ul>\n<\/div>\n<div class=\"kb-faq\">\n<h2>S\u0131k\u00e7a sorulan sorular<\/h2>\n<h3>400 bad request hatas\u0131 neden bazen bir g\u00fcn sonra kendili\u011finden ge\u00e7iyor?<\/h3>\n<p>Genelde \u00e7erez s\u00fcresinin dolmas\u0131 ya da taray\u0131c\u0131n\u0131n \u00f6nbelle\u011fi kendili\u011finden temizlemesiyle ge\u00e7er; kal\u0131c\u0131 bir sunucu ayar\u0131 de\u011fil, biriken istemci verisi d\u00fczelmi\u015ftir.<\/p>\n<h3>Hata neden yaln\u0131zca bende \u00e7\u0131k\u0131yor, ba\u015fka ziyaret\u00e7ilerde \u00e7\u0131km\u0131yor?<\/h3>\n<p>400 \u00e7o\u011funlukla istemci taraf\u0131 bir sorundur; sizin taray\u0131c\u0131n\u0131zdaki \u00e7erez, uzant\u0131 ya da \u00f6nbellek di\u011fer ziyaret\u00e7ileri etkilemez. Farkl\u0131 bir cihaz ya da taray\u0131c\u0131da test etmek bunu do\u011frular.<\/p>\n<h3>LimitRequestLine de\u011ferini kendim de\u011fi\u015ftirebilir miyim?<\/h3>\n<p>Payla\u015f\u0131ml\u0131 hostingde sunucu geneli Apache ayar\u0131na dokunamazs\u0131n\u0131z; Apache&#8217;nin resm\u00ee <a href=\"https:\/\/httpd.apache.org\/docs\/2.4\/mod\/core.html#limitrequestline\" title=\"Apache resm\u00ee dok\u00fcman\u0131 - LimitRequestLine y\u00f6nergesi\" target=\"_blank\" rel=\"noopener\">LimitRequestLine dok\u00fcman\u0131nda<\/a> tan\u0131mlanan bu s\u0131n\u0131r sunucu genelindedir; site baz\u0131nda <code>.htaccess<\/code> \u00fczerinden yaln\u0131zca kendi kurallar\u0131n\u0131z\u0131 (rewrite, y\u00f6nlendirme) k\u0131saltabilirsiniz. Sunucu geneli bir de\u011fi\u015fiklik gerekiyorsa destek talebi a\u00e7\u0131n.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>400 Bad Request hatas\u0131, sunucunun iste\u011fi i\u015flemeden \u00f6nce bozuk bulup reddetti\u011fini bildirir. Bu kart bozuk \u00e7erez, uzun URL ve .htaccess limitini s\u0131rayla eleyip hata g\u00fcnl\u00fc\u011f\u00fcnde iste\u011fi bulmay\u0131 anlat\u0131r.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[168],"class_list":["post-2253","post","type-post","status-publish","format-standard","hentry","category-web-hosting","tag-apache"],"meta_box":[],"_links":{"self":[{"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/posts\/2253","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/comments?post=2253"}],"version-history":[{"count":1,"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/posts\/2253\/revisions"}],"predecessor-version":[{"id":2326,"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/posts\/2253\/revisions\/2326"}],"wp:attachment":[{"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/media?parent=2253"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/categories?post=2253"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/narhost.com\/destek\/wp-json\/wp\/v2\/tags?post=2253"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}