{"id":21319,"date":"2025-09-30T09:52:37","date_gmt":"2025-09-30T09:52:37","guid":{"rendered":"https:\/\/outbyte.com\/blog\/?p=21319"},"modified":"2025-09-30T09:52:37","modified_gmt":"2025-09-30T09:52:37","slug":"como-corrigir-erro-21-err_network_changed","status":"publish","type":"post","link":"https:\/\/outbyte.com\/blog\/pt\/como-corrigir-erro-21-err_network_changed\/","title":{"rendered":"Como Corrigir Erro: 21 \u2013 ERR_NETWORK_CHANGED"},"content":{"rendered":"\n<p>Como frustrante que se sente quando, durante a navega\u00e7\u00e3o, o ERR_NETWORK_CHANGED de erro ocorre. Ele ocorre quando, devido a algo, a sua liga\u00e7\u00e3o \u00e0 internet \u00e9 interrompida ou alterada, e depois o seu navegador n\u00e3o p\u00f4de se conectar com um site. <\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/outbyte.com\/blog\/wp-content\/uploads\/21-\u2013-ERR_NETWORK_CHANGED-1024x683.png\" alt=\"21 \u2013 ERR_NETWORK_CHANGED\" class=\"wp-image-21299\" style=\"width:471px;height:auto\" srcset=\"https:\/\/outbyte.com\/blog\/wp-content\/uploads\/21-\u2013-ERR_NETWORK_CHANGED-1024x683.png 1024w, https:\/\/outbyte.com\/blog\/wp-content\/uploads\/21-\u2013-ERR_NETWORK_CHANGED-300x200.png 300w, https:\/\/outbyte.com\/blog\/wp-content\/uploads\/21-\u2013-ERR_NETWORK_CHANGED-768x512.png 768w, https:\/\/outbyte.com\/blog\/wp-content\/uploads\/21-\u2013-ERR_NETWORK_CHANGED-1200x800.png 1200w, https:\/\/outbyte.com\/blog\/wp-content\/uploads\/21-\u2013-ERR_NETWORK_CHANGED.png 1536w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Se voc\u00ea estiver enfrentando esse problema, aquio que voc\u00ea precisa saber para resolv\u00ea-lo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Causas_do_Erro_21_%E2%80%93_ERR_NETWORK_CHANGED\"><\/span>Causas do Erro: 21 \u2013 ERR_NETWORK_CHANGED<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Este erro geralmente ocorre quando algo deu errado com a sua conex\u00e3o \u00e0 Internet. As causas variam, mas os seguintes s\u00e3o algumas das mais frequentes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Inst\u00e1vel Configura\u00e7\u00f5es de Rede:<\/strong> Muitas vezes, mudan\u00e7as repentinas nas suas defini\u00e7\u00f5es de rede tamb\u00e9m podem desencadear este erro.<\/li>\n\n\n\n<li><strong>Desatualizado ou corrompido drivers de rede:<\/strong> Isto pode ser causado por um mau funcionamento de drivers.<\/li>\n\n\n\n<li><strong>Problemas de DNS:<\/strong> Um corrompido DNS cache afeta a conex\u00e3o entre o seu browser e o site.<\/li>\n\n\n\n<li><strong>Software de terceiros conflitos:<\/strong> inclui Vpn, Antiv\u00edrus e outras ferramentas de rede que pode interferir com suas configura\u00e7\u00f5es de internet.<\/li>\n\n\n\n<li><strong>V\u00edrus\/Malware:<\/strong> Malware tamb\u00e9m pode alterar as suas configura\u00e7\u00f5es de rede e, consequentemente, causar um impedimento.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Reinicie_O_Seu_Modem\"><\/span>1. Reinicie O Seu Modem<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Um simples reiniciar o seu modem ir\u00e1 limpar tempor\u00e1ria problemas de conectividade. Desligue seu modem e aguarde alguns minutos. <\/p>\n\n\n\n<p>Ligue-o novamente. Deixe o modem arranque totalmente, em seguida, verifique se o erro persiste. Isso vai garantir uma nova conex\u00e3o para seu ISP.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Repor_o_protocolo_TCPIP\"><\/span>2. Repor o protocolo TCP\/IP<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Se reiniciar o seu modem n\u00e3o funcionar, tente reiniciar a pilha de TCP\/IP. Isso vai resolver muitos problemas com a sua rede. Para fazer isso:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Abra o Prompt de Comando como um administrador.<\/strong> Em seguida, um por um, copie os seguintes comandos para ele, pressionando Enter ap\u00f3s cada um: <br> &#8211; <code class=\"inline\">netsh int ip reset<\/code><br> &#8211; <code class=\"inline\">netsh winsock reset<\/code><\/li>\n\n\n\n<li><strong>Reinicie o computador <\/strong>e veja se o problema desaparece.<\/li>\n<\/ul>\n\n\n\n<p><strong>Como Usar o Prompt de Comando<\/strong><\/p>\n\n\n\n<p>O Prompt de Comando funciona, simplesmente inserindo o adequado comandos do Windows para ele. Voc\u00ea us\u00e1-lo de forma eficaz quando voc\u00ea tem acesso administrativo ao computador.<\/p>\n\n\n\n<p>Privil\u00e9gios de administrador s\u00e3o necess\u00e1rios para determinadas tarefas, como a redefini\u00e7\u00e3o de <strong>protocolos TCP\/IP<\/strong>. Certifique-se de que voc\u00ea os tem antes de prosseguir.<\/p>\n\n\n\n<p>Veja como repor o protocolo TCP\/IP usando o Prompt de Comando:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Procurar <strong>Prompt de Comando<\/strong> no Windows barra de pesquisa.<\/li>\n\n\n\n<li>Clique com o bot\u00e3o direito do mouse e selecione <strong>Executar como administrador<\/strong>. <br>Digite os seguintes comandos, um por um, pressionando <strong>Enter<\/strong> ap\u00f3s cada um:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code class=\"inline\">netsh winsock reset<\/code>\u00a0<\/li>\n\n\n\n<li><code class=\"inline\">netsh int ip reset\u00a0<\/code>\u00a0<\/li>\n\n\n\n<li><code class=\"inline\">ipconfig \/release<\/code>\u00a0\u00a0<\/li>\n\n\n\n<li><code class=\"inline\">ipconfig \/renew<\/code>\u00a0\u00a0<\/li>\n\n\n\n<li><code class=\"inline\">ipconfig \/flushdns<\/code>\u00a0\u00a0<\/li>\n<\/ul>\n\n\n\n<p>Esses comandos ir\u00e3o redefinir suas configura\u00e7\u00f5es de TCP\/IP, que pode ajudar a resolver problemas relacionados com a rede.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Flush_DNS\"><\/span>3. Flush DNS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Um corrompido DNS de cache pode causar problemas de navega\u00e7\u00e3o. Compensa\u00e7\u00e3o pode ajudar a resolver o ERR_NETWORK_CHANGED erro. Aquis como limpar seu DNS:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Pressione <kbd>Windows<\/kbd> + <kbd>R<\/kbd> para abrir a <strong>caixa de di\u00e1logo Executar<\/strong>.<\/li>\n\n\n\n<li>Digite <code class=\"inline\">cmd<\/code> e pressione <kbd>Enter<\/kbd>. <br>No Prompt de Comando que \u00e9 exibida, digite o seguinte comando seguido <kbd>Digite<\/kbd>: <code class=\"inline\">ipconfig \/flushdns<\/code><\/li>\n\n\n\n<li>Reinicie o seu navegador e ver se o problema desaparece.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Atualizar_Os_Drivers_De_Rede\"><\/span>4. Atualizar Os Drivers De Rede<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Desatualizado ou corrompido drivers de rede pode ser uma raz\u00e3o para o problema de conectividade. Atualiza\u00e7\u00e3o-los:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Abrir <strong>o Gestor de Dispositivos<\/strong> clicando com o bot\u00e3o <kbd>Iniciar o <\/kbd>bot\u00e3o.<\/li>\n\n\n\n<li>Clique para <strong>Expanda Adaptadores de Rede<\/strong>.<\/li>\n\n\n\n<li>Clique com o bot\u00e3o direito do mouse no adaptador de rede e clique em <strong>Atualizar driver<\/strong>.<\/li>\n\n\n\n<li>Selecione <strong>Pesquisar automaticamente software de driver atualizado<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>Se a pesquisa autom\u00e1tica n\u00e3ofuncionar, considere a utiliza\u00e7\u00e3o de <a href=\"https:\/\/outbyte.com\/software\/driver-updater?m=blog_article_du_pplink&amp;utm_source=outbyte&amp;utm_medium=blog&amp;utm_campaign=article_du_pplink&amp;utm_term=%7Bbtn_text%7D&amp;utm_content=%7Bpage_path%7D\">Driver Updater<\/a> para actualizar automaticamente todos os drivers de dispositivo de forma eficiente.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_Varredura_de_Virus_no_Computador\"><\/span>5. Varredura de V\u00edrus no Computador<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Malware pode modificar suas configura\u00e7\u00f5es de rede e trazer um ERR_NETWORK_CHANGED erro. <\/p>\n\n\n\n<p>Executar uma verifica\u00e7\u00e3o completa do sistema para malware usando um bom software antiv\u00edrus. <a href=\"https:\/\/outbyte.com\/software\/avarmor\/?m=blog_article_av_pplink&amp;utm_source=outbyte&amp;utm_medium=blog&amp;utm_campaign=article_av_pplink&amp;utm_term=%7Bbtn_text%7D&amp;utm_content=%7Bpage_path%7D\">Outbyte AVarmor<\/a> \u00e9 altamente recomendado para a completa prote\u00e7\u00e3o contra malware.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"6_Desinstalar_o_Software_de_Cliente_VPN\"><\/span>6. Desinstalar o Software de Cliente VPN<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u00c0s vezes, as VPNs atrapalhar sua configura\u00e7\u00e3o de rede e resultar em erros. Tente desinstalar o software de cliente VPN para o momento e veja se o erro desaparece. Em caso afirmativo, experimente reinstalar o VPN ou um que seja compat\u00edvel com o seu sistema.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Perguntas_Frequentes\"><\/span>Perguntas Frequentes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Qual \u00e9 o significado de ERR_NETWORK_CHANGED?<\/strong><\/summary>\n<p>O c\u00f3digo mostra que as mudan\u00e7as nas configura\u00e7\u00f5es de rede t\u00eam lugar, ou o seu browser tem perturbado; ele n\u00e3o pode acessar a internet.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Pode um driver problem\u00e1tico causar este tipo de erro?<\/strong><\/summary>\n<p>Sim, esse tipo de erro se origina, principalmente, porque os drivers de Rede s\u00e3o muito antigas ou danificadas.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Como posso liberar meus DNS?<\/strong><\/summary>\n<p>Voc\u00ea abra o Prompt de Comando e digite ipconfig \/flushdns; isto ir\u00e1 limpar o cache de DNS.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>\u00c9 poss\u00edvel que este erro tem algo a ver com malware?<\/strong><\/summary>\n<p>Sim, malware pode reconfigurar as defini\u00e7\u00f5es de rede, assim, desligar a partir da internet.<\/p>\n<\/details>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Deve desinstalar a minha VPN para corrigir este erro?<\/strong><\/summary>\n<p>Desativar a sua VPN, temporariamente, para se certificar de que ele \u00e9 problem\u00e1tico. Voc\u00ea pode reinstal\u00e1-lo, se necess\u00e1rio, ou instalar um que seja compat\u00edvel.<\/p>\n<\/details>\n","protected":false},"excerpt":{"rendered":"<p>Como frustrante que se sente quando, durante a navega\u00e7\u00e3o, o ERR_NETWORK_CHANGED de erro ocorre. Ele ocorre quando, devido a algo, a sua liga\u00e7\u00e3o \u00e0 internet \u00e9 interrompida ou alterada, e depois o seu navegador n\u00e3o p\u00f4de se conectar com um site. Se voc\u00ea estiver enfrentando esse problema, aquio que voc\u00ea precisa saber para resolv\u00ea-lo. Causas&#8230; <a href=\"https:\/\/outbyte.com\/blog\/pt\/como-corrigir-erro-21-err_network_changed\/\" target=\"_blank\">Read more.<\/a><\/p>\n","protected":false},"author":27,"featured_media":26249,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[337,341],"tags":[659,771],"class_list":["post-21319","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-correcoes","category-guias","tag-codigo-de-erro","tag-erro-do-windows"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Como Corrigir Erro: 21 \u2013 ERR_NETWORK_CHANGED - Outbyte Official Blog<\/title>\n<meta name=\"description\" content=\"ERR_NETWORK_CHANGED de erro ocorre quando a conex\u00e3o \u00e0 internet \u00e9 interrompida ou alterada, e seu navegador n\u00e3o p\u00f4de se conectar com um site.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/outbyte.com\/blog\/pt\/como-corrigir-erro-21-err_network_changed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como Corrigir Erro: 21 \u2013 ERR_NETWORK_CHANGED - 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