{"id":58690,"date":"2026-07-20T16:06:46","date_gmt":"2026-07-20T14:06:46","guid":{"rendered":"https:\/\/win10cdkeys.com\/?p=58690"},"modified":"2026-07-22T16:30:39","modified_gmt":"2026-07-22T14:30:39","slug":"how-to-activate-windows-10","status":"publish","type":"post","link":"https:\/\/win10cdkeys.com\/en\/como-activar-windows-10\/","title":{"rendered":"How to activate Windows 10 step by step: a comprehensive guide"},"content":{"rendered":"<p><!-- IMAGEN SUGERIDA (destacada): Portada del art\u00edculo \u2014 pantalla de \"Configuraci\u00f3n &gt; Actualizaci\u00f3n y seguridad &gt; Activaci\u00f3n\" de Windows 10 con el mensaje \"Windows est\u00e1 activado\", limpia y clara. Alt text propuesto: \"Pantalla de activaci\u00f3n de Windows 10 mostrando el estado activado\". --><\/p>\n<p>You\u2019ve just bought your licence key and now it\u2019s time for the important bit: ensuring the system is activated and genuine. Find out <strong>How to activate Windows 10<\/strong> It\u2019s easier than it looks \u2014 it only takes a couple of minutes via the Windows Settings menu \u2014 and in this guide we\u2019ll walk you through it step by step, without any technical jargon, so that you can do it first time round even if you\u2019re not technically minded.<\/p>\n<p>Whether you have a new password or have just reinstalled your computer, here\u2019s what you\u2019ll see <strong>How to activate Windows 10<\/strong> with your licence, how to check that it has been successfully activated, and what to do if a warning message appears during the process.<\/p>\n<p><strong>Haven't got your password yet?<\/strong> To activate the software, you need a valid licence. You can purchase your <a href=\"\/en\/product-en\/windows-10-home-key\/\">Windows 10 Home licence<\/a> o <a href=\"\/en\/product-en\/windows-10-pro-key\/\">Windows 10 Pro<\/a> with immediate delivery by email; please follow this guide as soon as you receive it.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Contents of the site<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Contents\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/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:\/\/win10cdkeys.com\/en\/como-activar-windows-10\/#Antes_de_empezar_comprueba_el_estado_de_activacion\" >Before you start: check your activation status<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/win10cdkeys.com\/en\/como-activar-windows-10\/#Como_activar_Windows_10_paso_a_paso_con_tu_clave_de_producto\" >How to activate Windows 10 step by step using your product key<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/win10cdkeys.com\/en\/como-activar-windows-10\/#Como_activar_Windows_10_por_telefono_si_internet_falla\" >How to activate Windows 10 over the phone if your internet connection fails<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/win10cdkeys.com\/en\/como-activar-windows-10\/#Como_comprobar_que_Windows_10_quedo_activado\" >How to check that Windows 10 is activated<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/win10cdkeys.com\/en\/como-activar-windows-10\/#Problemas_frecuentes_al_activar_y_como_resolverlos\" >Common problems when activating and how to resolve them<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/win10cdkeys.com\/en\/como-activar-windows-10\/#Donde_comprar_una_clave_legitima_de_Windows_10\" >Where to buy a genuine Windows 10 product key<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/win10cdkeys.com\/en\/como-activar-windows-10\/#En_resumen\" >In summary<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Antes_de_empezar_comprueba_el_estado_de_activacion\"><\/span>Before you start: check your activation status<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The first thing to do is to check whether your device is already activated or not. To do this:<\/p>\n<ol>\n<li>Open <strong>Home<\/strong> and go to <strong>Configuration<\/strong> (the cog icon).<\/li>\n<li>Go to <strong>Updates and security<\/strong>.<\/li>\n<li>In the menu on the left, click <strong>Activation<\/strong>.<\/li>\n<\/ol>\n<p>On that screen, you\u2019ll see one of two messages: \u00abWindows is activated with a digital licence\u00bb (you\u2019re all set) or a message stating that Windows is not activated. If it\u2019s the latter, follow the steps below, where we explain <strong>How to activate Windows 10<\/strong> by entering your password.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Como_activar_Windows_10_paso_a_paso_con_tu_clave_de_producto\"><\/span>How to activate Windows 10 step by step using your product key<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>This is the standard procedure when you purchase a licence. Please have the 25-character key you received by email to hand; here\u2019s how to proceed <strong>How to activate Windows 10<\/strong> by following these steps:<\/p>\n<ol>\n<li>Go to <strong>Settings &gt; Update &amp; Security &gt; Activation<\/strong>.<\/li>\n<li>Click on <strong>Change the product key<\/strong>.<\/li>\n<li>Type (or paste) the <strong>25-character key<\/strong> exactly as you received it, including the hyphens.<\/li>\n<li>Click <strong>Next<\/strong> and wait for Windows to validate the key with Microsoft\u2019s servers.<\/li>\n<li>When it\u2019s finished, you\u2019ll see a message saying that <strong>Windows is activated<\/strong>. That\u2019s all.<\/li>\n<\/ol>\n<p>For the validation to work, the team needs <strong>internet connection<\/strong>. If the process gets stuck halfway through, check that you\u2019re connected and try again. Microsoft\u2019s official documentation also explains how to <a href=\"https:\/\/support.microsoft.com\/es-es\/windows\/activar-windows-c39005d4-95ee-b91e-b399-2820fda32227\" target=\"_blank\" rel=\"noopener\">activate Windows<\/a> if you\u2019d prefer to consult the original source.<\/p>\n<p><!-- IMAGEN SUGERIDA (cuerpo): Captura de la ventana \"Escribir una clave de producto\" de Windows 10 con el campo de la clave de 25 caracteres. Alt text propuesto: \"Ventana para introducir la clave de producto al activar Windows 10\". --><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Como_activar_Windows_10_por_telefono_si_internet_falla\"><\/span>How to activate Windows 10 over the phone if your internet connection fails<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>If online activation does not complete successfully, Windows 10 includes an alternative method by telephone, which is completely free and automated. This is the way to <strong>Activate Windows 10<\/strong> when, for whatever reason, online validation does not work on that computer:<\/p>\n<ol>\n<li>Click <strong>Home<\/strong>, writes <strong>SLUI 04<\/strong> and press Enter.<\/li>\n<li>Select your <strong>country or region<\/strong>.<\/li>\n<li>Windows will display a freephone number and a <strong>Installation ID<\/strong>. Call and follow the instructions given by the automated system.<\/li>\n<li>Enter the <strong>Confirmation ID<\/strong> Please make the call and confirm. Windows will then be activated.<\/li>\n<\/ol>\n<h2><span class=\"ez-toc-section\" id=\"Como_comprobar_que_Windows_10_quedo_activado\"><\/span>How to check that Windows 10 is activated<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>After learning <strong>How to activate Windows 10<\/strong>, it is worth checking that the licence has been applied correctly. To make sure everything has gone smoothly, go back to <strong>Settings &gt; Update &amp; Security &gt; Activation<\/strong>. If you see \u00abWindows is activated\u00bb, the licence has been applied correctly and you don\u2019t need to do anything else. You can also type <strong>winver<\/strong> on the Start menu to view your system version.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Problemas_frecuentes_al_activar_y_como_resolverlos\"><\/span>Common problems when activating and how to resolve them<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><strong>\u00abThe key is invalid\u00bb<\/strong>: Check that you haven\u2019t mixed up similar characters (such as the letter O for the number zero) and write it out using hyphens. Copying and pasting from the email helps to avoid mistakes.<\/li>\n<li><strong>Wrong edition<\/strong>: A Windows 10 Home product key will not activate Windows 10 Pro, and vice versa. Please check that the edition installed matches the one on your product key.<\/li>\n<li><strong>You replaced some parts in your PC<\/strong>: after replacing the motherboard, you sometimes need to reactivate it using the <strong>Activation Troubleshooter<\/strong> which appears on the same Activation screen.<\/li>\n<li><strong>It is still not activated<\/strong>: Please get in touch. Our guarantee includes a password reset and 24\/7 support until the issue is resolved.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Donde_comprar_una_clave_legitima_de_Windows_10\"><\/span>Where to buy a genuine Windows 10 product key<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To ensure that the activation goes smoothly, the first step is to start with a <strong>valid key<\/strong>. At Win10cdkeys you can buy your licence for <a href=\"\/en\/product-en\/windows-10-home-key\/\">Windows 10 Home<\/a> or of <a href=\"\/en\/product-en\/windows-10-pro-key\/\">Windows 10 Pro<\/a> featuring:<\/p>\n<ul>\n<li><strong>Immediate and automatic delivery<\/strong>: You\u2019ll receive the code by email as soon as you\u2019ve completed your purchase, ready to activate.<\/li>\n<li><strong>Genuine licences<\/strong> and clear instructions, even if you\u2019re not technically minded.<\/li>\n<li><strong>Replacement guarantee and 24\/7 support<\/strong>: If you have any problems with activation, we\u2019ll help you until the issue is resolved.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"En_resumen\"><\/span>In summary<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><strong>How to activate Windows 10<\/strong>: go to <strong>Settings &gt; Update &amp; Security &gt; Activation<\/strong>, tap <strong>Change the product key<\/strong> and enter your 25-character password.<\/li>\n<li>You need <strong>internet connection<\/strong>; if that fails, use the <strong>activation by telephone<\/strong> with <strong>SLUI 04<\/strong>.<\/li>\n<li>Check the result on the Activation screen itself: it should say \u00abWindows is activated\u00bb.<\/li>\n<li>Always start with a <a href=\"\/en\/product-en\/windows-10-pro-key\/\">genuine Windows 10 product key<\/a> with immediate delivery and 24\/7 support.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Acabas de comprar tu clave y ahora toca lo importante: dejar el sistema activado y leg\u00edtimo. Saber c\u00f3mo activar Windows 10 es m\u00e1s sencillo de lo que parece \u2014son un par de minutos desde la propia Configuraci\u00f3n de Windows\u2014 y en esta gu\u00eda te lo explicamos paso a paso, sin tecnicismos, para que lo hagas [&hellip;]<\/p>\n","protected":false},"author":5671,"featured_media":39146,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_joinchat":[],"footnotes":""},"categories":[74,84],"tags":[],"class_list":["post-58690","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guias","category-windows"],"_links":{"self":[{"href":"https:\/\/win10cdkeys.com\/en\/wp-json\/wp\/v2\/posts\/58690","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/win10cdkeys.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/win10cdkeys.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/win10cdkeys.com\/en\/wp-json\/wp\/v2\/users\/5671"}],"replies":[{"embeddable":true,"href":"https:\/\/win10cdkeys.com\/en\/wp-json\/wp\/v2\/comments?post=58690"}],"version-history":[{"count":0,"href":"https:\/\/win10cdkeys.com\/en\/wp-json\/wp\/v2\/posts\/58690\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/win10cdkeys.com\/en\/wp-json\/wp\/v2\/media\/39146"}],"wp:attachment":[{"href":"https:\/\/win10cdkeys.com\/en\/wp-json\/wp\/v2\/media?parent=58690"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/win10cdkeys.com\/en\/wp-json\/wp\/v2\/categories?post=58690"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/win10cdkeys.com\/en\/wp-json\/wp\/v2\/tags?post=58690"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}