{"id":13159,"date":"2026-06-10T12:41:49","date_gmt":"2026-06-10T12:41:49","guid":{"rendered":"https:\/\/4eck-media.de\/?post_type=blog&#038;p=13159"},"modified":"2026-07-16T16:25:37","modified_gmt":"2026-07-16T16:25:37","slug":"avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie","status":"publish","type":"blog","link":"https:\/\/4eck-media.de\/pl\/blog\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\/","title":{"rendered":"AVG Web Protection blokuje stron\u0119 lub jej elementy: przyczyna i rozwi\u0105zanie"},"content":{"rendered":"<?xml encoding=\"UTF-8\"><p class=\"wp-block-paragraph\">Gdy nowoczesna technologia jest zbyt nowoczesna: jak oprogramowanie AVG blokowa&#322;o HTTP\/3 &ndash; i dlaczego nasze rozwi&#261;zanie mo&#380;e teraz pom&oacute;c innym <strong>rozwi&#261;za&#263; problemy z HTTP\/3<\/strong> &ndash; oto nasz artyku&#322; na blogu. Gdy pod koniec pa&#378;dziernika 2025 roku przeprowadzili&#347;my relaunch strony internetowej gimnazjum z internatem Schloss Torgelow (osobny artyku&#322; na blogu jeszcze si&#281; uka&#380;e!), wszystko mia&#322;o by&#263; perfekcyjne &hellip; i takie w&#322;a&#347;nie by&#322;o: nowy system WordPress, migracja tre&#347;ci strony z Typo3 do WordPressa, wysokowydajny hosting na nowoczesnym serwerze chmurowym Hetzner, najwy&#380;sze wyniki w PageSpeed, dost&#281;pno&#347;ci cyfrowej i bezpiecze&#324;stwie oraz projekt UX, kt&oacute;ry mo&#380;na zaliczy&#263; do najnowocze&#347;niejszych stron szkolnych na &#347;wiecie.<\/p><section class=\"custom-theme-block image-full-container theme-image-full-container block-padding-middle\">\n    <div class=\"container\">\n        <div class=\"row\">\n            <div class=\"col-12\">\n                <div class=\"image-wrapper\">\n                    <script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"contentUrl\":\"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/schlosstorgelow-relaunch-1920x1080.avif\",\"url\":\"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/schlosstorgelow-relaunch.avif\",\"width\":1440,\"height\":1218,\"caption\":\"schlosstorgelow-relaunch\"}<\/script>\n\n<picture>\n    <img src=\"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/schlosstorgelow-relaunch-1920x1080.avif\" srcset=\"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/schlosstorgelow-relaunch-2160x1440.avif 1612w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/schlosstorgelow-relaunch-1440x960.avif 1135w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/schlosstorgelow-relaunch-1080x720.avif 852w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/schlosstorgelow-relaunch-960x640.avif 757w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/schlosstorgelow-relaunch-720x480.avif 568w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/schlosstorgelow-relaunch-640x428.avif 506w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/schlosstorgelow-relaunch-480x320.avif 378w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/schlosstorgelow-relaunch-320x214.avif 253w\" alt=\"Neue Website f&uuml;r Schloss Torgelow\" title=\"schlosstorgelow-relaunch\" width=\"1440\" height=\"1218\" loading=\"lazy\" decoding=\"async\" sizes=\"auto, 100vw\">\n<\/picture>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/section><p class=\"wp-block-paragraph\">Jednak podczas gdy u nas wszystko dzia&#322;a&#322;o b&#322;yskawicznie, klient nagle zg&#322;osi&#322;: <em>&bdquo;Strona &#322;aduje si&#281; bardzo wolno albo wcale. Czasami brakuje obraz&oacute;w, czasami wszystko jest bia&#322;e.&rdquo;<\/em><\/p><p class=\"wp-block-paragraph\">To, co pocz&#261;tkowo brzmia&#322;o jak typowy b&#322;&#261;d pami&#281;ci podr&#281;cznej lub przegl&#261;darki, po intensywnej analizie okaza&#322;o si&#281; wysoce specyficznym wsp&oacute;&#322;dzia&#322;aniem Firefoksa, Windowsa, ochrony WWW AVG i nowego protoko&#322;u HTTP\/3.<\/p><h2 class=\"wp-block-heading\">Objawy: ERR_QUIC_PROTOCOL_ERROR &amp; NS_ERROR_NET_PARTIAL_TRANSFER<\/h2><p class=\"wp-block-paragraph\">W &#347;rodowisku deweloperskim (staging) wyst&#281;powa&#322;y osobliwe b&#322;&#281;dy:<\/p><ul class=\"wp-block-list\">\n<li>Skrypty i obrazy nie &#322;adowa&#322;y si&#281; w ca&#322;o&#347;ci.<\/li>\n\n\n\n<li>W konsoli przegl&#261;darki pojawia&#322;y si&#281; komunikaty takie jak ERR_QUIC_PROTOCOL_ERROR i NS_ERROR_NET_PARTIAL_TRANSFER.<\/li>\n\n\n\n<li>Ten sam obraz, kt&oacute;rego nie da&#322;o si&#281; za&#322;adowa&#263; na stronie, otwiera&#322; si&#281; bez problemu w nowej karcie.<\/li>\n<\/ul><p class=\"wp-block-paragraph\">Podejrzenie nasuwa&#322;o si&#281; samo: to nie b&#322;&#261;d w kodzie, lecz problem transportowy &ndash; a wi&#281;c co&#347; pomi&#281;dzy przegl&#261;dark&#261;, serwerem a sieci&#261;.<\/p><h2 class=\"wp-block-heading\">Poszukiwanie przyczyny: od motywu po antywirusa<\/h2><p class=\"wp-block-paragraph\">Aby wykluczy&#263; czynniki zak&#322;&oacute;caj&#261;ce, dzia&#322;ali&#347;my systematycznie:<\/p><ul class=\"wp-block-list\">\n<li>Zmiana motywu &rarr; bez zmian<\/li>\n\n\n\n<li>Dezaktywacja pami&#281;ci podr&#281;cznej &rarr; bez zmian<\/li>\n\n\n\n<li>Wy&#322;&#261;czenie wtyczek &rarr; bez zmian<\/li>\n\n\n\n<li>Sprawdzenie firewalla &amp; WAF &rarr; nic podejrzanego<\/li>\n<\/ul><p class=\"wp-block-paragraph\">Dopiero gdy przygotowali&#347;my czyste &#347;rodowisko testowe &ndash; &#347;wie&#380;y system Windows z AVG Antivirus i Firefoksem &ndash; okaza&#322;o si&#281;:<br>Gdy tylko ochrona WWW AVG by&#322;a aktywna, pojawia&#322;y si&#281; b&#322;&#281;dy. Po dezaktywacji modu&#322;u ochrony WWW wszystko dzia&#322;a&#322;o bez zarzutu.<\/p><p class=\"wp-block-paragraph\">R&oacute;wnolegle wspiera&#322; nas administrator system&oacute;w naszego klienta, kt&oacute;ry zg&#322;osi&#322;: <em>&hellip; &#380;e przeanalizowa&#322; w&#322;a&#347;nie jeszcze raz ok. 15 r&oacute;&#380;nych skaner&oacute;w antywirusowych. Testowali&#347;my przy tym wy&#322;&#261;cznie wersje bezp&#322;atne.<br>Nowa strona nie dzia&#322;a przy AVG free, AVG Business i Avast Free &ndash; za ka&#380;dym razem w po&#322;&#261;czeniu z Firefoksem.<\/em><\/p><h2 class=\"wp-block-heading\">Przyczyna: HTTP\/3 przez QUIC napotyka oprogramowanie zabezpieczaj&#261;ce<\/h2><p class=\"wp-block-paragraph\">HTTP\/3 to najnowsza wersja protoko&#322;u internetowego, kt&oacute;ra w przeciwie&#324;stwie do HTTP\/2 nie opiera si&#281; ju&#380; na TCP, lecz na QUIC przez UDP (port 443). Kompatybilno&#347;&#263; jest zapewniona we wszystkich du&#380;ych przegl&#261;darkach &ndash; zobacz zrzut ekranu z https:\/\/caniuse.com\/http3.<\/p><section class=\"custom-theme-block image-full-container theme-image-full-container block-padding-middle\">\n    <div class=\"container\">\n        <div class=\"row\">\n            <div class=\"col-12\">\n                <div class=\"image-wrapper\">\n                    <script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"contentUrl\":\"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/can-i-use-http3-1920x1080.avif\",\"url\":\"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/can-i-use-http3.avif\",\"width\":1440,\"height\":1183,\"caption\":\"can-i-use-http3\"}<\/script>\n\n<picture>\n    <img src=\"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/can-i-use-http3-1920x1080.avif\" srcset=\"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/can-i-use-http3-2880x1920.avif 2098w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/can-i-use-http3-2160x1440.avif 1753w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/can-i-use-http3-1440x960.avif 1169w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/can-i-use-http3-1080x720.avif 877w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/can-i-use-http3-960x640.avif 779w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/can-i-use-http3-720x480.avif 584w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/can-i-use-http3-640x428.avif 521w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/can-i-use-http3-480x320.avif 390w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/can-i-use-http3-320x214.avif 261w\" alt=\"Browserkompatibilit&auml;t von HTTP\/3\" title=\"can-i-use-http3\" width=\"1440\" height=\"1183\" loading=\"lazy\" decoding=\"async\" sizes=\"auto, 100vw\">\n<\/picture>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/section><p class=\"wp-block-paragraph\">Zastosowanie HTTP\/3 sprawia, &#380;e po&#322;&#261;czenia s&#261; teoretycznie szybsze i stabilniejsze &ndash; jednak nie wsz&#281;dzie.<\/p><p class=\"wp-block-paragraph\">Niekt&oacute;re firewalle, routery i rozwi&#261;zania antywirusowe traktuj&#261; ruch UDP bardziej restrykcyjnie. Dok&#322;adnie tak najwyra&#378;niej dzia&#322;a&#322; r&oacute;wnie&#380; skaner DNS\/DoS AVG, kt&oacute;ry b&#322;&#281;dnie ogranicza&#322; strumie&#324; danych QUIC.<br>Skutek: przerwane transfery plik&oacute;w &ndash; zw&#322;aszcza w przypadku wi&#281;kszych obraz&oacute;w lub plik&oacute;w JavaScript.<\/p><p class=\"wp-block-paragraph\">Co ciekawe: na innej domenie dzia&#322;aj&#261;cej na tym samym serwerze problemy nie wyst&#281;powa&#322;y. R&oacute;&#380;nica?<br>Ta domena pozosta&#322;a na HTTP\/2 (TCP) &ndash; czyli starszym, bardziej konserwatywnym protokole, kt&oacute;rego AVG nie blokowa&#322;.<\/p><h2 class=\"wp-block-heading\">Rozwi&#261;zanie: wy&#322;&#261;czy&#263; HTTP\/3 &amp; poinformowa&#263; przegl&#261;darki<\/h2><p class=\"wp-block-paragraph\">Aby zapewni&#263; stabilno&#347;&#263; wszystkim u&#380;ytkownikom, zdecydowali&#347;my si&#281; na pragmatyczn&#261; drog&#281;:<br>Wy&#322;&#261;czyli&#347;my HTTP\/3 dla dotkni&#281;tej problemem domeny i dodatkowo wys&#322;ali&#347;my do wszystkich przegl&#261;darek nag&#322;&oacute;wek <em>Alt-Svc: clear<\/em>. W ten spos&oacute;b wydawane jest polecenie: &bdquo;Zapomnij o HTTP\/3 dla tej strony &ndash; korzystaj znowu z HTTP\/2.&rdquo;<\/p><p class=\"wp-block-paragraph\">W konfiguracji nginx wygl&#261;da&#322;o to tak:<\/p><p class=\"wp-block-paragraph\"><em>listen 443 ssl http2;<br>add_header Alt-Svc &bdquo;clear&rdquo; always;<\/em><\/p><p class=\"wp-block-paragraph\">Od tego momentu strona natychmiast dzia&#322;a&#322;a stabilnie na wszystkich urz&#261;dzeniach, we wszystkich przegl&#261;darkach i na wszystkich komputerach chronionych przez AVG.<\/p><h2 class=\"wp-block-heading\">Czego mo&#380;na si&#281; z tego nauczy&#263;<\/h2><p class=\"wp-block-paragraph\">To do&#347;wiadczenie by&#322;o istotne nie tylko dla nas, lecz potencjalnie tak&#380;e dla tysi&#281;cy innych operator&oacute;w stron. Podczas naszego researchu szukali&#347;my wcze&#347;niej przyczyny problemu przez Google i omawiali&#347;my problem tak&#380;e z r&oacute;&#380;nymi silnikami odpowiedzi AI, ale HTTP\/3 jako przyczyna takiego problemu przy korzystaniu z AVG w po&#322;&#261;czeniu z przegl&#261;dark&#261; Firefox najwyra&#378;niej nie by&#322; jeszcze nigdzie publicznie udokumentowany. Co ciekawe, to w&#322;a&#347;nie kombinacja AVG i Firefoksa jest prawdopodobnie jednym z kluczowych problem&oacute;w. Om&oacute;wi&#322;em ten problem z moj&#261; &#380;on&#261;, kt&oacute;ra w gimnazjum z internatem w Torgelow uczy matematyki i ekonomii, a ona przekaza&#322;a mi, &#380;e na lekcje ekonomii r&oacute;wnie&#380; otwiera z uczniami pewn&#261; stron&#281; internetow&#261; &hellip; zawsze ze wskaz&oacute;wk&#261;, aby nie otwiera&#263; jej w Firefoksie, poniewa&#380; wyst&#281;puj&#261; problemy z wy&#347;wietlaniem i &#322;adowaniem, kt&oacute;rych nie ma w Edge ani Chrome. Zak&#322;adam, &#380;e operatorzy tych stron po prostu nic o tym nie wiedz&#261;.<\/p><p class=\"wp-block-paragraph\">Kto dzi&#347; aktywuje HTTP\/3, ryzykuje, &#380;e okre&#347;lone rozwi&#261;zania zabezpieczaj&#261;ce b&#281;d&#261; niezauwa&#380;enie blokowa&#263; tre&#347;ci &ndash; szczeg&oacute;lnie w &#347;rodowisku Windows, Firefoksa i system&oacute;w antywirusowych z ochron&#261; WWW (np. AVG, Avast, &hellip;).<\/p><p class=\"wp-block-paragraph\">Tak&#380;e tutaj dostawcy rozwi&#261;za&#324; zabezpieczaj&#261;cych musz&#261; zmieni&#263; podej&#347;cie. Obecnie ok. 36 procent wszystkich stron internetowych korzysta z HTTP\/3. Zobacz tutaj zrzut ekranu z https:\/\/w3techs.com\/technologies\/overview\/site_element<\/p><section class=\"custom-theme-block image-full-container theme-image-full-container block-padding-middle\">\n    <div class=\"container\">\n        <div class=\"row\">\n            <div class=\"col-12\">\n                <div class=\"image-wrapper\">\n                    <script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"contentUrl\":\"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/site-elements-websites-w3techs-1920x1080.avif\",\"url\":\"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/site-elements-websites-w3techs.avif\",\"width\":1440,\"height\":1115,\"caption\":\"site-elements-websites-w3techs\"}<\/script>\n\n<picture>\n    <img src=\"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/site-elements-websites-w3techs-1920x1080.avif\" srcset=\"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/site-elements-websites-w3techs-2880x1920.avif 2044w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/site-elements-websites-w3techs-2160x1440.avif 1861w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/site-elements-websites-w3techs-1440x960.avif 1240w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/site-elements-websites-w3techs-1080x720.avif 930w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/site-elements-websites-w3techs-960x640.avif 827w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/site-elements-websites-w3techs-720x480.avif 620w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/site-elements-websites-w3techs-640x428.avif 553w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/site-elements-websites-w3techs-480x320.avif 413w, https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/site-elements-websites-w3techs-320x214.avif 276w\" alt=\"Prozentuale Nutzung von Site Elementen nach w3techs.com\" title=\"site-elements-websites-w3techs\" width=\"1440\" height=\"1115\" loading=\"lazy\" decoding=\"async\" sizes=\"auto, 100vw\">\n<\/picture>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/section><p class=\"wp-block-paragraph\"><strong>Kilka praktycznych wskaz&oacute;wek:<\/strong><\/p><ul class=\"wp-block-list\">\n<li>Obrazy b&#322;&#281;d&oacute;w, takie jak ERR_QUIC_PROTOCOL_ERROR czy NS_ERROR_NET_PARTIAL_TRANSFER, cz&#281;sto wskazuj&#261; na problemy z HTTP\/3\/QUIC.<\/li>\n\n\n\n<li>W Firefoksie mo&#380;na to sprawdzi&#263; w<br>about:config &rarr; network.http.http3.enabled = false.<\/li>\n\n\n\n<li>Po stronie serwera mo&#380;na to tymczasowo przetestowa&#263;, wy&#322;&#261;czaj&#261;c HTTP\/3 i wysy&#322;aj&#261;c Alt-Svc: clear.<\/li>\n<\/ul><p class=\"wp-block-paragraph\">W razie potrzeby mo&#380;na p&oacute;&#378;niej ponownie celowo aktywowa&#263; HTTP\/3 &ndash; ale tylko wtedy, gdy jest pewne, &#380;e &#380;adne oprogramowanie ochronne nie ingeruje ju&#380; w komunikacj&#281; UDP.<\/p><h2 class=\"wp-block-heading\">Podsumowanie: HTTP\/3 i AVG<\/h2><p class=\"wp-block-paragraph\">To nie kod, nie hosting i nie CMS, lecz kombinacja nowoczesnego protoko&#322;u i nadmiernie ostro&#380;nej ochrony antywirusowej sprawi&#322;a, &#380;e strona zacz&#281;&#322;a si&#281; chwia&#263;. Nasz wniosek: innowacje wydajno&#347;ciowe, takie jak HTTP\/3, s&#261; &#347;wietne, ale w praktyce trzeba sprawdzi&#263;, czy naprawd&#281; wszystkie ogniwa &#322;a&#324;cucha s&#261; na nie gotowe. Gdyby nasz klient sam nie korzysta&#322; z AVG, szczerze m&oacute;wi&#261;c, w og&oacute;le by&#347;my tego nie zauwa&#380;yli. Nawet je&#347;li ostatecznie problemy z &#322;adowaniem dotkn&#281;&#322;yby tylko promil u&#380;ytkownik&oacute;w, i tak jest to irytuj&#261;ce.<\/p><p class=\"wp-block-paragraph\">Dzi&#281;ki gruntownej analizie naszego zespo&#322;u deweloperskiego strona schlosstorgelow.de dzia&#322;a teraz szybko, bezpiecznie i stabilnie. Dzielimy si&#281; tym wnioskiem, aby tak&#380;e inni deweloperzy stron, administratorzy i agencje szybciej doszli do celu, gdy wydarzy si&#281; co&#347; podobnego.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gdy nowoczesna technologia jest zbyt nowoczesna: jak oprogramowanie AVG blokowa&#322;o HTTP\/3 &ndash; i dlaczego nasze rozwi&#261;zanie mo&#380;e teraz pom&oacute;c innym rozwi&#261;za&#263; problemy [&hellip;]<\/p>\n","protected":false},"featured_media":13158,"template":"","meta":{"_acf_changed":false,"_yoast_wpseo_focuskw":"","_yoast_wpseo_title":"Rozwi\u0105zywanie problem\u00f3w HTTP\/3 z ochron\u0105 WWW AVG","_yoast_wpseo_metadesc":"AVG blokuje tre\u015bci witryny? Dowiedz si\u0119, dlaczego HTTP\/3 & QUIC wywo\u0142uj\u0105 b\u0142\u0119dy i jak dzi\u0119ki prostej poprawce uzyska\u0107 stabilne czasy \u0142adowania.","_yoast_wpseo_meta-robots-noindex":"","_yoast_wpseo_meta-robots-nofollow":"","_yoast_wpseo_canonical":"","_yoast_wpseo_opengraph-title":"","_yoast_wpseo_opengraph-description":"","_yoast_wpseo_opengraph-image":"","_yoast_wpseo_twitter-title":"","_yoast_wpseo_twitter-description":"","_yoast_wpseo_twitter-image":"","_foureck_ai_chatbot_priority":5,"_title":"","title":"","_description":"","description":"","_thumbnail":"","thumbnail":"","_image":"","image":"","previewColor":"","_previewColor":"","previewColor2":"","_previewColor2":"","_subtitle":"","subtitle":"","_benefit":"","benefit":"","_color":"","color":"","_titleForGallery":"","titleForGallery":"","_subtitleForGallery":"","subtitleForGallery":"","_imageForGallery":"","imageForGallery":"","_client":"","client":"","_service":"","service":"","_cooperationSince":"","cooperationSince":"","name":"","_name":"","author":"Matthias Petri","_author":"field_blog_author","company":"","_company":"","text":"","_text":"","position":"","_position":"","_yoast_wpseo_metakeywords":""},"blog_category":[],"class_list":["post-13159","blog","type-blog","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Rozwi\u0105zywanie problem\u00f3w HTTP\/3 z ochron\u0105 WWW AVG<\/title>\n<meta name=\"description\" content=\"AVG blokuje tre\u015bci witryny? Dowiedz si\u0119, dlaczego HTTP\/3 &amp; QUIC wywo\u0142uj\u0105 b\u0142\u0119dy i jak dzi\u0119ki prostej poprawce uzyska\u0107 stabilne czasy \u0142adowania.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/4eck-media.de\/pl\/blog\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rozwi\u0105zywanie problem\u00f3w HTTP\/3 z ochron\u0105 WWW AVG\" \/>\n<meta property=\"og:description\" content=\"AVG blokuje tre\u015bci witryny? Dowiedz si\u0119, dlaczego HTTP\/3 &amp; QUIC wywo\u0142uj\u0105 b\u0142\u0119dy i jak dzi\u0119ki prostej poprawce uzyska\u0107 stabilne czasy \u0142adowania.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/4eck-media.de\/pl\/blog\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\/\" \/>\n<meta property=\"og:site_name\" content=\"4eck-media\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-16T16:25:37+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Szacowany czas czytania\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minuta\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/blog\\\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\\\/#webpage\",\"headline\":\"AVG Web Protection blokuje stron\u0119 lub jej elementy: przyczyna i rozwi\u0105zanie\",\"description\":\"Gdy nowoczesna technologia jest zbyt nowoczesna: jak oprogramowanie AVG blokowa&#322;o HTTP\\\/3 &ndash; i dlaczego nasze rozwi&#261;zanie mo&#380;e teraz pom&oacute;c innym rozwi&#261;za&#263; problemy [&hellip;]\",\"url\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/blog\\\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\\\/\",\"datePublished\":\"2026-06-10T12:41:49+00:00\",\"dateModified\":\"2026-07-16T16:25:37+00:00\",\"inLanguage\":\"pl\",\"thumbnailUrl\":\"https:\\\/\\\/4eck-media.de\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/avg-webschutz-block-website-http3.avif\",\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/blog\\\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\\\/#primaryimage\"},\"keywords\":\"\",\"about\":{\"@id\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/#ProfessionalService\"},\"isPartOf\":{\"@id\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/#website\"},\"publisher\":{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/#organization\",\"name\":\"4eck Media\",\"url\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/\",\"member\":[{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/#member-matthias-petri\\\/\",\"name\":\"Matthias Petri\",\"givenName\":\"Matthias\",\"familyName\":\"Petri\",\"honorificPrefix\":\"Herr\\\/Frau\",\"gender\":\"https:\\\/\\\/schema.org\\\/Male\",\"pronouns\":\"he\\\/him\",\"birthPlace\":{\"@type\":\"Place\",\"address\":{\"@type\":\"PostalAddress\",\"addressCountry\":\"DE\"}},\"nationality\":\"Niemiec\"}],\"logo\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/4eck-media.de\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/logo-4eck-media.jpg\"},\"contactPoint\":{\"@id\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/#ContactPoint\"},\"address\":{\"@id\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/#PostalAddress\"},\"sameAs\":[\"https:\\\/\\\/maps.app.goo.gl\\\/jKvYz1jwPhh31x6H7\",\"https:\\\/\\\/www.facebook.com\\\/4eckmedia\",\"https:\\\/\\\/www.kununu.com\\\/de\\\/4eck-media1\\\/kommentare\",\"https:\\\/\\\/www.youtube.com\\\/c\\\/tutkit\",\"https:\\\/\\\/www.youtube.com\\\/@4eckmedia\",\"https:\\\/\\\/www.provenexpert.com\\\/de-de\\\/4eck-media-gmbh-co-kg\\\/\",\"https:\\\/\\\/www.agenturtipp.de\\\/agentur\\\/4eck-media-gmbh-co-kg-seo-design-e\\\/\",\"https:\\\/\\\/feedbax.de\\\/anbieter\\\/4eck-media-gmbh-co-kg\",\"https:\\\/\\\/www.sortlist.com\\\/de\\\/agency\\\/4eck-media-gmbh-co-kg-agentur-fur-webdesign-seo\",\"https:\\\/\\\/www.werbeagentur.de\\\/de\\\/a\\\/4eck-media-gmbh-co-kg\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/4eck-media\\\/\",\"https:\\\/\\\/www.drweb.de\\\/beste-agentur-finden\\\/4eck-media\\\/\",\"https:\\\/\\\/clutch.co\\\/profile\\\/4eck-media-gmbh-co-kg\",\"https:\\\/\\\/www.designrush.com\\\/agency\\\/profile\\\/4eck-media\",\"https:\\\/\\\/www.g2.com\\\/products\\\/4eck-media-gmbh-co-kg\\\/reviews\",\"https:\\\/\\\/techbehemoths.com\\\/company\\\/4eck-media-gmbh-co-kg\",\"https:\\\/\\\/www.yelp.de\\\/biz\\\/4eck-media-waren-m%C3%BCritz\",\"https:\\\/\\\/insights.k5.de\\\/agencies\\\/4eck-media-gmbh-co-kg\",\"https:\\\/\\\/www.crunchbase.com\\\/organization\\\/4eck-media\"]}},{\"@type\":\"ImageObject\",\"inLanguage\":\"pl-PL\",\"@id\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/blog\\\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\\\/#primaryimage\",\"url\":\"https:\\\/\\\/4eck-media.de\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/avg-webschutz-block-website-http3.avif\",\"contentUrl\":\"https:\\\/\\\/4eck-media.de\\\/wp-content\\\/uploads\\\/2025\\\/11\\\/avg-webschutz-block-website-http3.avif\",\"width\":1080,\"height\":500,\"caption\":\"Gdy nowoczesna technologia jest zbyt nowoczesna: jak AVG Antivirus blokowa\u0142 HTTP\\\/3 \u2013 i dlaczego nasze rozwi\u0105zanie mo\u017ce teraz pom\u00f3c innym\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/#website\",\"url\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/\",\"name\":\"4eck-media\",\"description\":\"Oficjalna strona 4eck Media\",\"potentialAction\":{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"},\"inLanguage\":\"pl\",\"publisher\":{\"@id\":\"https:\\\/\\\/4eck-media.de\\\/pl\\\/#ProfessionalService\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Rozwi\u0105zywanie problem\u00f3w HTTP\/3 z ochron\u0105 WWW AVG","description":"AVG blokuje tre\u015bci witryny? Dowiedz si\u0119, dlaczego HTTP\/3 & QUIC wywo\u0142uj\u0105 b\u0142\u0119dy i jak dzi\u0119ki prostej poprawce uzyska\u0107 stabilne czasy \u0142adowania.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/4eck-media.de\/pl\/blog\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\/","og_locale":"pl_PL","og_type":"article","og_title":"Rozwi\u0105zywanie problem\u00f3w HTTP\/3 z ochron\u0105 WWW AVG","og_description":"AVG blokuje tre\u015bci witryny? Dowiedz si\u0119, dlaczego HTTP\/3 & QUIC wywo\u0142uj\u0105 b\u0142\u0119dy i jak dzi\u0119ki prostej poprawce uzyska\u0107 stabilne czasy \u0142adowania.","og_url":"https:\/\/4eck-media.de\/pl\/blog\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\/","og_site_name":"4eck-media","article_modified_time":"2026-07-16T16:25:37+00:00","twitter_card":"summary_large_image","twitter_misc":{"Szacowany czas czytania":"4 minuta"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/4eck-media.de\/pl\/blog\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\/#webpage","headline":"AVG Web Protection blokuje stron\u0119 lub jej elementy: przyczyna i rozwi\u0105zanie","description":"Gdy nowoczesna technologia jest zbyt nowoczesna: jak oprogramowanie AVG blokowa&#322;o HTTP\/3 &ndash; i dlaczego nasze rozwi&#261;zanie mo&#380;e teraz pom&oacute;c innym rozwi&#261;za&#263; problemy [&hellip;]","url":"https:\/\/4eck-media.de\/pl\/blog\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\/","datePublished":"2026-06-10T12:41:49+00:00","dateModified":"2026-07-16T16:25:37+00:00","inLanguage":"pl","thumbnailUrl":"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/avg-webschutz-block-website-http3.avif","primaryImageOfPage":{"@id":"https:\/\/4eck-media.de\/pl\/blog\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\/#primaryimage"},"keywords":"","about":{"@id":"https:\/\/4eck-media.de\/pl\/#ProfessionalService"},"isPartOf":{"@id":"https:\/\/4eck-media.de\/pl\/#website"},"publisher":{"@type":"Organization","@id":"https:\/\/4eck-media.de\/pl\/#organization","name":"4eck Media","url":"https:\/\/4eck-media.de\/pl\/","member":[{"@type":"Person","@id":"https:\/\/4eck-media.de\/pl\/#member-matthias-petri\/","name":"Matthias Petri","givenName":"Matthias","familyName":"Petri","honorificPrefix":"Herr\/Frau","gender":"https:\/\/schema.org\/Male","pronouns":"he\/him","birthPlace":{"@type":"Place","address":{"@type":"PostalAddress","addressCountry":"DE"}},"nationality":"Niemiec"}],"logo":{"@type":"ImageObject","url":"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/09\/logo-4eck-media.jpg"},"contactPoint":{"@id":"https:\/\/4eck-media.de\/pl\/#ContactPoint"},"address":{"@id":"https:\/\/4eck-media.de\/pl\/#PostalAddress"},"sameAs":["https:\/\/maps.app.goo.gl\/jKvYz1jwPhh31x6H7","https:\/\/www.facebook.com\/4eckmedia","https:\/\/www.kununu.com\/de\/4eck-media1\/kommentare","https:\/\/www.youtube.com\/c\/tutkit","https:\/\/www.youtube.com\/@4eckmedia","https:\/\/www.provenexpert.com\/de-de\/4eck-media-gmbh-co-kg\/","https:\/\/www.agenturtipp.de\/agentur\/4eck-media-gmbh-co-kg-seo-design-e\/","https:\/\/feedbax.de\/anbieter\/4eck-media-gmbh-co-kg","https:\/\/www.sortlist.com\/de\/agency\/4eck-media-gmbh-co-kg-agentur-fur-webdesign-seo","https:\/\/www.werbeagentur.de\/de\/a\/4eck-media-gmbh-co-kg","https:\/\/www.linkedin.com\/company\/4eck-media\/","https:\/\/www.drweb.de\/beste-agentur-finden\/4eck-media\/","https:\/\/clutch.co\/profile\/4eck-media-gmbh-co-kg","https:\/\/www.designrush.com\/agency\/profile\/4eck-media","https:\/\/www.g2.com\/products\/4eck-media-gmbh-co-kg\/reviews","https:\/\/techbehemoths.com\/company\/4eck-media-gmbh-co-kg","https:\/\/www.yelp.de\/biz\/4eck-media-waren-m%C3%BCritz","https:\/\/insights.k5.de\/agencies\/4eck-media-gmbh-co-kg","https:\/\/www.crunchbase.com\/organization\/4eck-media"]}},{"@type":"ImageObject","inLanguage":"pl-PL","@id":"https:\/\/4eck-media.de\/pl\/blog\/avg-web-protection-blokuje-strone-lub-jej-elementy-przyczyna-i-rozwiazanie\/#primaryimage","url":"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/avg-webschutz-block-website-http3.avif","contentUrl":"https:\/\/4eck-media.de\/wp-content\/uploads\/2025\/11\/avg-webschutz-block-website-http3.avif","width":1080,"height":500,"caption":"Gdy nowoczesna technologia jest zbyt nowoczesna: jak AVG Antivirus blokowa\u0142 HTTP\/3 \u2013 i dlaczego nasze rozwi\u0105zanie mo\u017ce teraz pom\u00f3c innym"},{"@type":"WebSite","@id":"https:\/\/4eck-media.de\/pl\/#website","url":"https:\/\/4eck-media.de\/pl\/","name":"4eck-media","description":"Oficjalna strona 4eck Media","potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/4eck-media.de\/pl\/?s={search_term_string}"},"query-input":"required name=search_term_string"},"inLanguage":"pl","publisher":{"@id":"https:\/\/4eck-media.de\/pl\/#ProfessionalService"}}]}},"yoast_fields":{"_yoast_wpseo_primary_blog_category":"","_yoast_wpseo_content_score":"90","_yoast_wpseo_estimated-reading-time-minutes":"4","_yoast_wpseo_title":"Rozwi\u0105zywanie problem\u00f3w HTTP\/3 z ochron\u0105 WWW AVG","_yoast_wpseo_metadesc":"AVG blokuje tre\u015bci witryny? Dowiedz si\u0119, dlaczego HTTP\/3 & QUIC wywo\u0142uj\u0105 b\u0142\u0119dy i jak dzi\u0119ki prostej poprawce uzyska\u0107 stabilne czasy \u0142adowania."},"block_visibility_meta":[],"_links":{"self":[{"href":"https:\/\/4eck-media.de\/pl\/wp-json\/wp\/v2\/blog\/13159","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/4eck-media.de\/pl\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/4eck-media.de\/pl\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/4eck-media.de\/pl\/wp-json\/wp\/v2\/media\/13158"}],"wp:attachment":[{"href":"https:\/\/4eck-media.de\/pl\/wp-json\/wp\/v2\/media?parent=13159"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/4eck-media.de\/pl\/wp-json\/wp\/v2\/blog_category?post=13159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}