{"id":21812,"date":"2026-11-06T01:04:43","date_gmt":"2026-11-05T22:04:43","guid":{"rendered":"https:\/\/sunucun.com.tr\/blog\/err-quic-protocol-error\/"},"modified":"2026-11-06T01:04:43","modified_gmt":"2026-11-05T22:04:43","slug":"err-quic-protocol-error","status":"publish","type":"post","link":"https:\/\/sunucun.com.tr\/blog\/err-quic-protocol-error\/","title":{"rendered":"ERR_QUIC_PROTOCOL_ERROR Hatas\u0131 Nedir? Chrome&#8217;da Nas\u0131l \u00c7\u00f6z\u00fcl\u00fcr?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/sunucun.com.tr\/blog\/err-quic-protocol-error\/#QUIC_Nedir_Hata_Ne_Demek\" >QUIC Nedir? Hata Ne Demek?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/sunucun.com.tr\/blog\/err-quic-protocol-error\/#ERR_QUIC_PROTOCOL_ERROR_Hatasinin_Nedenleri\" >ERR_QUIC_PROTOCOL_ERROR Hatas\u0131n\u0131n Nedenleri<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/sunucun.com.tr\/blog\/err-quic-protocol-error\/#ERR_QUIC_PROTOCOL_ERROR_Nasil_Cozulur\" >ERR_QUIC_PROTOCOL_ERROR Nas\u0131l \u00c7\u00f6z\u00fcl\u00fcr?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/sunucun.com.tr\/blog\/err-quic-protocol-error\/#1_Sayfayi_Yenileyin_ve_Farkli_Bir_Ag_Deneyin\" >1. Sayfay\u0131 Yenileyin ve Farkl\u0131 Bir A\u011f Deneyin<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/sunucun.com.tr\/blog\/err-quic-protocol-error\/#2_Chromeda_QUIC_Protokolunu_Kapatin\" >2. Chrome&#8217;da QUIC Protokol\u00fcn\u00fc Kapat\u0131n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/sunucun.com.tr\/blog\/err-quic-protocol-error\/#3_Guvenlik_Yazilimini_VPNi_ve_Proxyyi_Kontrol_Edin\" >3. G\u00fcvenlik Yaz\u0131l\u0131m\u0131n\u0131, VPN&#8217;i ve Proxy&#8217;yi Kontrol Edin<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/sunucun.com.tr\/blog\/err-quic-protocol-error\/#4_Eklentileri_Kapatin\" >4. Eklentileri Kapat\u0131n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/sunucun.com.tr\/blog\/err-quic-protocol-error\/#5_Ag_Ayarlarini_Sifirlayin\" >5. A\u011f Ayarlar\u0131n\u0131 S\u0131f\u0131rlay\u0131n<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/sunucun.com.tr\/blog\/err-quic-protocol-error\/#Site_Sahipleri_Icin_HTTP3_ve_QUIC_Yapilandirmasi\" >Site Sahipleri \u0130\u00e7in: HTTP\/3 ve QUIC Yap\u0131land\u0131rmas\u0131<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/sunucun.com.tr\/blog\/err-quic-protocol-error\/#Sonuc\" >Sonu\u00e7<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\"><strong>ERR_QUIC_PROTOCOL_ERROR<\/strong>, Chrome&#8217;un bir siteye <strong>QUIC<\/strong> protokol\u00fcyle ba\u011flan\u0131rken hata ald\u0131\u011f\u0131n\u0131 g\u00f6steren bir ba\u011flant\u0131 hatas\u0131d\u0131r. Chrome bu durumda &#8220;Bu siteye ula\u015f\u0131lam\u0131yor&#8221; sayfas\u0131n\u0131 ve <code>ERR_QUIC_PROTOCOL_ERROR<\/code> kodunu g\u00f6sterir. Hata \u00e7o\u011fu zaman yaln\u0131zca belirli sitelerde (\u00f6zellikle Google hizmetlerinde ve HTTP\/3 destekleyen sitelerde) ve yaln\u0131zca belirli a\u011flarda g\u00f6r\u00fcl\u00fcr. Bu yaz\u0131da QUIC&#8217;in ne oldu\u011funu, hatan\u0131n neden \u00e7\u0131kt\u0131\u011f\u0131n\u0131 ve nas\u0131l \u00e7\u00f6z\u00fclece\u011fini anlat\u0131yoruz.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"QUIC_Nedir_Hata_Ne_Demek\"><\/span>QUIC Nedir? Hata Ne Demek?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p class=\"wp-block-paragraph\">QUIC, Google taraf\u0131ndan geli\u015ftirilen ve daha sonra standart hale gelen bir ta\u015f\u0131ma protokol\u00fcd\u00fcr; <strong>HTTP\/3<\/strong> bu protokol\u00fcn \u00fczerinde \u00e7al\u0131\u015f\u0131r. Klasik HTTPS ba\u011flant\u0131lar\u0131 TCP kullan\u0131rken QUIC, <strong>UDP 443<\/strong> portu \u00fczerinden \u00e7al\u0131\u015f\u0131r ve ba\u011flant\u0131y\u0131 daha h\u0131zl\u0131 kurmay\u0131 hedefler. Taray\u0131c\u0131 bir sitenin QUIC destekledi\u011fini \u00f6\u011frendi\u011finde bu protokol\u00fc kullanmay\u0131 dener. Aradaki bir cihaz veya yaz\u0131l\u0131m UDP trafi\u011fini engeller ya da bozarsa QUIC ba\u011flant\u0131s\u0131 ba\u015far\u0131s\u0131z olur ve ERR_QUIC_PROTOCOL_ERROR hatas\u0131 g\u00f6r\u00fcl\u00fcr.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ERR_QUIC_PROTOCOL_ERROR_Hatasinin_Nedenleri\"><\/span>ERR_QUIC_PROTOCOL_ERROR Hatas\u0131n\u0131n Nedenleri<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<ul class=\"wp-block-list\"><li><strong>G\u00fcvenlik duvar\u0131 veya antivir\u00fcs UDP&#8217;yi engelliyor:<\/strong> Baz\u0131 g\u00fcvenlik yaz\u0131l\u0131mlar\u0131 ve kurumsal g\u00fcvenlik duvarlar\u0131 UDP 443 trafi\u011fini kesebilir veya inceleyemedikleri i\u00e7in engeller.<\/li><li><strong>VPN veya proxy:<\/strong> UDP trafi\u011fini d\u00fczg\u00fcn ta\u015f\u0131mayan VPN&#8217;ler ve proxy&#8217;ler QUIC ba\u011flant\u0131lar\u0131n\u0131 bozar.<\/li><li><strong>Modem veya a\u011f cihaz\u0131:<\/strong> Baz\u0131 modemler ve a\u011f filtreleri UDP paketlerini d\u00fc\u015f\u00fcrebilir.<\/li><li><strong>Taray\u0131c\u0131 eklentileri:<\/strong> \u0130stekleri de\u011fi\u015ftiren eklentiler QUIC ile uyumsuz olabilir.<\/li><li><strong>Sunucu veya CDN taraf\u0131ndaki yap\u0131land\u0131rma:<\/strong> Site HTTP\/3 deste\u011fi duyurdu\u011fu halde UDP 443 portu sunucuda kapal\u0131ysa veya HTTP\/3 yap\u0131land\u0131rmas\u0131 hatal\u0131ysa ba\u011flant\u0131 ba\u015far\u0131s\u0131z olur.<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"ERR_QUIC_PROTOCOL_ERROR_Nasil_Cozulur\"><\/span>ERR_QUIC_PROTOCOL_ERROR Nas\u0131l \u00c7\u00f6z\u00fcl\u00fcr?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Sayfayi_Yenileyin_ve_Farkli_Bir_Ag_Deneyin\"><\/span>1. Sayfay\u0131 Yenileyin ve Farkl\u0131 Bir A\u011f Deneyin<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<p class=\"wp-block-paragraph\">Chrome QUIC ba\u015far\u0131s\u0131z oldu\u011funda genellikle bir sonraki denemede TCP&#8217;ye geri d\u00f6ner; sayfay\u0131 birka\u00e7 kez yenilemek bazen yeterlidir. Siteyi mobil veriyle a\u00e7may\u0131 deneyin: a\u00e7\u0131l\u0131yorsa sorun kulland\u0131\u011f\u0131n\u0131z a\u011fdaki bir engeldir.<\/p>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Chromeda_QUIC_Protokolunu_Kapatin\"><\/span>2. Chrome&#8217;da QUIC Protokol\u00fcn\u00fc Kapat\u0131n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<p class=\"wp-block-paragraph\">En h\u0131zl\u0131 \u00e7\u00f6z\u00fcm, Chrome&#8217;un QUIC kullanmas\u0131n\u0131 kapatmakt\u0131r. Adres \u00e7ubu\u011funa <code>chrome:\/\/flags\/#enable-quic<\/code> yaz\u0131n, <strong>Experimental QUIC protocol<\/strong> se\u00e7ene\u011fini <strong>Disabled<\/strong> yap\u0131n ve <strong>Relaunch<\/strong> ile taray\u0131c\u0131y\u0131 yeniden ba\u015flat\u0131n (deneysel se\u00e7enekler Chrome s\u00fcr\u00fcm\u00fcne g\u00f6re de\u011fi\u015febilir; listede yoksa di\u011fer ad\u0131mlara ge\u00e7in). Bu ayardan sonra Chrome siteleri klasik HTTPS (TCP) \u00fczerinden a\u00e7ar; siteler normal \u015fekilde \u00e7al\u0131\u015fmaya devam eder. Kurumsal olarak y\u00f6netilen bilgisayarlarda bu ayar y\u00f6netici politikas\u0131yla belirleniyor olabilir.<\/p>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Guvenlik_Yazilimini_VPNi_ve_Proxyyi_Kontrol_Edin\"><\/span>3. G\u00fcvenlik Yaz\u0131l\u0131m\u0131n\u0131, VPN&#8217;i ve Proxy&#8217;yi Kontrol Edin<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<p class=\"wp-block-paragraph\">Antivir\u00fcs\u00fcn web korumas\u0131 veya g\u00fcvenlik duvar\u0131n\u0131 k\u0131sa s\u00fcreli\u011fine kapat\u0131p deneyin; VPN veya proxy kullan\u0131yorsan\u0131z ba\u011flant\u0131y\u0131 kesin. Sorun \u00e7\u00f6z\u00fcl\u00fcyorsa yaz\u0131l\u0131m\u0131n ayarlar\u0131nda Chrome&#8217;a veya UDP 443 trafi\u011fine izin verin.<\/p>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Eklentileri_Kapatin\"><\/span>4. Eklentileri Kapat\u0131n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<p class=\"wp-block-paragraph\">Siteyi gizli pencerede a\u00e7\u0131n. A\u00e7\u0131l\u0131yorsa <code>chrome:\/\/extensions<\/code> sayfas\u0131nda eklentileri tek tek kapatarak sorunlu olan\u0131 bulun.<\/p>\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Ag_Ayarlarini_Sifirlayin\"><\/span>5. A\u011f Ayarlar\u0131n\u0131 S\u0131f\u0131rlay\u0131n<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n<p class=\"wp-block-paragraph\">Windows&#8217;ta Komut \u0130stemi&#8217;ni y\u00f6netici olarak a\u00e7\u0131p <code>netsh winsock reset<\/code> ve <code>ipconfig \/flushdns<\/code> komutlar\u0131n\u0131 \u00e7al\u0131\u015ft\u0131r\u0131n, ard\u0131ndan bilgisayar\u0131 ve modemi yeniden ba\u015flat\u0131n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Site_Sahipleri_Icin_HTTP3_ve_QUIC_Yapilandirmasi\"><\/span>Site Sahipleri \u0130\u00e7in: HTTP\/3 ve QUIC Yap\u0131land\u0131rmas\u0131<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p class=\"wp-block-paragraph\">Ziyaret\u00e7ileriniz sitenizde bu hatay\u0131 farkl\u0131 a\u011flardan al\u0131yorsa HTTP\/3 yap\u0131land\u0131rman\u0131z\u0131 kontrol edin:<\/p>\n\n\n<ol class=\"wp-block-list\"><li><strong>UDP 443&#8217;\u00fcn a\u00e7\u0131k oldu\u011fundan emin olun:<\/strong> Sunucu HTTP\/3 destekliyorsa g\u00fcvenlik duvar\u0131nda TCP 443&#8217;\u00fcn yan\u0131nda UDP 443&#8217;e de izin verilmelidir (\u00f6r. <code>ufw allow 443\/udp<\/code>).<\/li><li><strong>Alt-Svc ba\u015fl\u0131\u011f\u0131n\u0131 kontrol edin:<\/strong> Taray\u0131c\u0131, sitenin HTTP\/3 destekledi\u011fini <code>Alt-Svc<\/code> yan\u0131t ba\u015fl\u0131\u011f\u0131ndan \u00f6\u011frenir. HTTP\/3 d\u00fczg\u00fcn \u00e7al\u0131\u015fm\u0131yorsa bu ba\u015fl\u0131\u011f\u0131 g\u00f6ndermeyi b\u0131rakmak, taray\u0131c\u0131lar\u0131n QUIC denemesini durdurur.<\/li><li><strong>CDN ayar\u0131n\u0131 g\u00f6zden ge\u00e7irin:<\/strong> Cloudflare gibi CDN&#8217;lerde HTTP\/3 (QUIC) \u00f6zelli\u011fi panelden a\u00e7\u0131l\u0131p kapat\u0131labilir. Sorunun kayna\u011f\u0131n\u0131 ay\u0131rmak i\u00e7in ge\u00e7ici olarak kapat\u0131p test edebilirsiniz.<\/li><li><strong>Web sunucusu s\u00fcr\u00fcm\u00fcn\u00fc g\u00fcncel tutun:<\/strong> LiteSpeed, Nginx ve di\u011fer sunucularda HTTP\/3 deste\u011fi s\u00fcr\u00fcmle birlikte geli\u015fir; g\u00fcncel olmayan s\u00fcr\u00fcmler uyumluluk sorunlar\u0131na yol a\u00e7abilir.<\/li><\/ol>\n\n\n<p class=\"wp-block-paragraph\">Ba\u011flant\u0131n\u0131n hi\u00e7 kurulamad\u0131\u011f\u0131 veya yar\u0131da kesildi\u011fi benzer durumlar i\u00e7in <a href=\"https:\/\/sunucun.com.tr\/blog\/err-connection-timed-out\/\">ERR_CONNECTION_TIMED_OUT<\/a> ve <a href=\"https:\/\/sunucun.com.tr\/blog\/err_connection_reset\/\">ERR_CONNECTION_RESET<\/a> rehberlerimize bakabilirsiniz.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Sonuc\"><\/span>Sonu\u00e7<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n<p class=\"wp-block-paragraph\">ERR_QUIC_PROTOCOL_ERROR, Chrome&#8217;un UDP \u00fczerinden \u00e7al\u0131\u015fan QUIC ba\u011flant\u0131s\u0131n\u0131n ba\u015far\u0131s\u0131z oldu\u011funu g\u00f6sterir. Ziyaret\u00e7i olarak en h\u0131zl\u0131 \u00e7\u00f6z\u00fcm <code>chrome:\/\/flags<\/code> \u00fczerinden QUIC&#8217;i kapatmak ve g\u00fcvenlik yaz\u0131l\u0131m\u0131n\u0131, VPN&#8217;i ve eklentileri kontrol etmektir. Site sahibiyseniz UDP 443 portunu, Alt-Svc ba\u015fl\u0131\u011f\u0131n\u0131 ve CDN&#8217;deki HTTP\/3 ayar\u0131n\u0131 g\u00f6zden ge\u00e7irin.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ERR_QUIC_PROTOCOL_ERROR, Chrome&#8217;un bir siteye QUIC protokol\u00fcyle ba\u011flan\u0131rken hata ald\u0131\u011f\u0131n\u0131 g\u00f6steren bir ba\u011flant\u0131 hatas\u0131d\u0131r. Chrome bu durumda &#8220;Bu siteye ula\u015f\u0131lam\u0131yor&#8221; sayfas\u0131n\u0131 ve ERR_QUIC_PROTOCOL_ERROR kodunu g\u00f6sterir. Hata \u00e7o\u011fu zaman yaln\u0131zca belirli sitelerde (\u00f6zellikle Google hizmetlerinde ve HTTP\/3 destekleyen sitelerde) ve yaln\u0131zca belirli a\u011flarda g\u00f6r\u00fcl\u00fcr. Bu yaz\u0131da QUIC&#8217;in ne oldu\u011funu, hatan\u0131n neden \u00e7\u0131kt\u0131\u011f\u0131n\u0131 ve nas\u0131l \u00e7\u00f6z\u00fclece\u011fini anlat\u0131yoruz. QUIC&hellip;<\/p>\n","protected":false},"author":1,"featured_media":21820,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[1523],"tags":[],"class_list":["post-21812","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-network"],"_links":{"self":[{"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/posts\/21812","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/comments?post=21812"}],"version-history":[{"count":0,"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/posts\/21812\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/media\/21820"}],"wp:attachment":[{"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/media?parent=21812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/categories?post=21812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sunucun.com.tr\/blog\/wp-json\/wp\/v2\/tags?post=21812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}