{"id":163975,"date":"2026-03-11T13:03:41","date_gmt":"2026-03-11T13:03:41","guid":{"rendered":"https:\/\/nailknowledge.org\/?page_id=163975"},"modified":"2026-03-11T15:08:56","modified_gmt":"2026-03-11T15:08:56","slug":"system-support","status":"publish","type":"page","link":"https:\/\/nailknowledge.org\/vi\/system-support","title":{"rendered":"H\u1ed7 tr\u1ee3 h\u1ec7 th\u1ed1ng"},"content":{"rendered":"<section style=\"background-color:#dfbec1;padding-top:30px;padding-bottom:0px;--hero-pb:0px;box-shadow:0 4px 20px rgba(0,0,0,0.40);z-index:10;\" class=\"nk-hero nk-hero-9b065b77 alignfull wp-block-nk-hero\">\r\n\t<div class=\"nk-hero__inner\">\r\n\t\t\t\t<div class=\"nk-hero__content\">\r\n\t\t\t<img loading=\"eager\" fetchpriority=\"high\" width=\"1024\" height=\"306\" src=\"https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-1024x306.webp\" class=\"nk-hero__title-image\" alt=\"\" style=\"max-width:min(360px,100%);display:block;margin-left:auto;margin-right:auto;\" srcset=\"https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-1024x306.webp 1024w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-300x90.webp 300w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-768x230.webp 768w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-1536x459.webp 1536w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-18x5.webp 18w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-651x195.webp 651w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-600x179.webp 600w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-50x15.webp 50w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-200x60.webp 200w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-100x30.webp 100w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help.webp 2011w\" sizes=\"auto, (max-width: 683px) calc(100vw - 100px), 651px\" decoding=\"async\" \/>\t\t\t\t\t\t\t\t\t\t<div class=\"nk-hero__text\">\n\n<p><\/p>\n\n<\/div>\r\n\t\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t<div class=\"nk-hero__image\" style=\"align-self:flex-end;flex:none;width:35%;\">\r\n\t\t\t\t<img width=\"880\" height=\"1024\" src=\"https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-hands-880x1024.webp\" class=\"nk-hero__img\" alt=\"\" srcset=\"https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-hands-880x1024.webp 880w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-hands-258x300.webp 258w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-hands-768x894.webp 768w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-hands-1320x1536.webp 1320w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-hands-10x12.webp 10w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-hands-651x758.webp 651w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-hands-600x698.webp 600w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-hands-43x50.webp 43w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-hands-172x200.webp 172w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-hands-86x100.webp 86w, https:\/\/nailknowledge.org\/wp-content\/uploads\/2026\/03\/how-can-we-help-hands.webp 1403w\" sizes=\"auto, (max-width: 683px) calc(100vw - 100px), 651px\" loading=\"lazy\" decoding=\"async\" \/>\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n<\/section>\r\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00e1c v\u1ea5n \u0111\u1ec1 ph\u00e1t l\u1ea1i b\u00e0i h\u1ecdc<\/h2>\n\n\n\n<p>If you\u2019re encountering audio or lesson issues while attempting to watch a course on a browser, this article explains various ways to troubleshoot these problems. Our support team will also follow this guide when responding to inquiries regarding lesson playback.&nbsp;<\/p>\n\n\n\n<p>Xin l\u01b0u \u00fd r\u1eb1ng c\u1ea7n c\u00f3 k\u1ebft n\u1ed1i b\u0103ng th\u00f4ng r\u1ed9ng v\u1edbi t\u1ed1c \u0111\u1ed9 t\u1ed1i thi\u1ec3u l\u00e0 5Mbit ho\u1eb7c 800kbps \u0111\u1ec3 xem kh\u00f3a h\u1ecdc Nail Knowledge tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n. C\u00e1c y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng c\u00f2n l\u1ea1i c\u1ee7a ch\u00fang t\u00f4i \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea<a rel=\"noreferrer noopener\" href=\"https:\/\/ufbsupport.udemy.com\/hc\/articles\/115005533888-System-Requirements\" target=\"_blank\">&nbsp;<\/a><a href=\"https:\/\/nailknowledge.org\/vi\/nail-professional-knowledge-base\/yeu-cau-he-thong\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u0111\u00e2y<\/a><a rel=\"noreferrer noopener\" href=\"https:\/\/ufbsupport.udemy.com\/hc\/articles\/115005533888-System-Requirements\" target=\"_blank\">.<\/a>&nbsp;<\/p>\n\n\n\n<p><strong>X\u1eed l\u00fd s\u1ef1 c\u1ed1 v\u1edbi m\u00f4i tr\u01b0\u1eddng ch\u01a1i kh\u00f3a h\u1ecdc c\u1ee7a b\u1ea1n<\/strong><\/p>\n\n\n\n<p>Vui l\u00f2ng th\u1eed c\u00e1ch sau:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>H\u00e3y th\u1eed xem b\u00e0i h\u1ecdc trong m\u1ed9t&nbsp;<a href=\"https:\/\/support.google.com\/chrome\/answer\/95464?hl=en\" target=\"_blank\" rel=\"noreferrer noopener\">c\u1eeda s\u1ed5 \u1ea9n danh<\/a>.\n<ul class=\"wp-block-list\">\n<li>N\u1ebfu b\u00e0i h\u1ecdc di\u1ec5n ra b\u00ecnh th\u01b0\u1eddng, h\u00e3y th\u1eed ki\u1ec3m tra ti\u1ec7n \u00edch m\u1edf r\u1ed9ng, plugin ho\u1eb7c ch\u01b0\u01a1ng tr\u00ecnh t\u01b0\u1eddng l\u1eeda tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n \u0111\u1ec3 xem c\u00f3 c\u1ea7n c\u1ea5u h\u00ecnh l\u1ea1i hay t\u1eaft kh\u00f4ng.&nbsp;&nbsp;<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>If you\u2019re encountering the issue while watching the lesson on your college or academies network, try watching the lesson on a non-company \/ non-academy network instead. If you\u2019re able to watch the lesson without any issue, please report the issue to their IT team.<\/li>\n\n\n\n<li>Try a different browser. If you\u2019re not already using&nbsp;<a href=\"https:\/\/www.google.com\/chrome\/\" target=\"_blank\" rel=\"noreferrer noopener\">Tr\u00ecnh duy\u1ec7t Google Chrome<\/a>, we recommend using it, as we\u2019ve found it works best to watch NailKnowledge courses.&nbsp;<\/li>\n\n\n\n<li>X\u00f3a c\u1ee7a b\u1ea1n&nbsp;<a href=\"https:\/\/www.wikihow.com\/Clear-Your-Browser's-Cache\" target=\"_blank\" rel=\"noreferrer noopener\">browser\u2019s cookies and cache&nbsp;<\/a>v\u00e0 kh\u1edfi \u0111\u1ed9ng l\u1ea1i tr\u01b0\u1edbc khi th\u1eed l\u1ea1i.\n<ul class=\"wp-block-list\">\n<li>If you have a lot of browser tabs open, close most of them except the one you\u2019re using to watch the course.<\/li>\n\n\n\n<li>Ki\u1ec3m tra c\u1ee7a b\u1ea1n&nbsp;<a href=\"https:\/\/www.whatsmybrowser.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">phi\u00ean b\u1ea3n tr\u00ecnh duy\u1ec7t<\/a>&nbsp;V\u00e0&nbsp;<a href=\"https:\/\/www.whatsmybrowser.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">c\u1eadp nh\u1eadt n\u00f3 n\u1ebfu c\u1ea7n<\/a>.&nbsp;<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>T\u1ed1c \u0111\u1ed9 internet t\u1ed1i thi\u1ec3u ph\u1ea3i l\u00e0 5Mbit ho\u1eb7c 800kbps \u0111\u1ec3 xem kh\u00f3a h\u1ecdc NailKnowledge tr\u00ean thi\u1ebft b\u1ecb c\u1ee7a b\u1ea1n.&nbsp;<a href=\"https:\/\/www.speedtest.net\/\" target=\"_blank\" rel=\"noreferrer noopener\">Ki\u1ec3m tra k\u1ebft n\u1ed1i internet c\u1ee7a b\u1ea1n<\/a>&nbsp;t\u1ed1c \u0111\u1ed9 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o m\u00f4i tr\u01b0\u1eddng c\u1ee7a b\u1ea1n \u0111\u00e1p \u1ee9ng \u0111i\u1ec1u n\u00e0y v\u00e0 h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n \u0111\u00e1p \u1ee9ng&nbsp;<a href=\"https:\/\/nailknowledge.org\/vi\/nail-professional-knowledge-base\/yeu-cau-he-thong\/\" target=\"_blank\" rel=\"noreferrer noopener\">y\u00eau c\u1ea7u c\u1ee7a ch\u00fang t\u00f4i<\/a>. N\u1ebfu t\u1ed1c \u0111\u1ed9 internet c\u1ee7a b\u1ea1n th\u1ea5p, h\u00e3y th\u1eed xem kh\u00f3a h\u1ecdc v\u00e0o gi\u1edd th\u1ea5p \u0111i\u1ec3m khi k\u1ebft n\u1ed1i internet c\u1ee7a b\u1ea1n m\u1ea1nh h\u01a1n.<\/li>\n\n\n\n<li>If you can\u2019t hear any audio, double-check to see that the lesson player volume is turned up and that the lesson is not muted. Check the sound settings on your device.<\/li>\n\n\n\n<li>Kh\u1edfi \u0111\u1ed9ng l\u1ea1i m\u00e1y t\u00ednh v\u00e0 c\u00e1c thi\u1ebft b\u1ecb m\u1ea1ng (modem\/b\u1ed9 chuy\u1ec3n m\u1ea1ch\/b\u1ed9 \u0111\u1ecbnh tuy\u1ebfn).<\/li>\n<\/ol>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">System Requirements<\/h2>\n\n\n\n<p>B\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp c\u00e1c kh\u00f3a h\u1ecdc NailKnowledge t\u1eeb nhi\u1ec1u thi\u1ebft b\u1ecb v\u00e0 n\u1ec1n t\u1ea3ng kh\u00e1c nhau, tr\u00ean c\u1ea3 m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n\/m\u00e1y t\u00ednh x\u00e1ch tay PC v\u00e0 Mac, c\u0169ng nh\u01b0 thi\u1ebft b\u1ecb di \u0111\u1ed9ng Android v\u00e0 iOS. Y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng c\u1ee7a ch\u00fang t\u00f4i \u0111\u1ed1i v\u1edbi nh\u1eefng kh\u00f3a h\u1ecdc n\u00e0y \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea b\u00ean d\u01b0\u1edbi.<\/p>\n\n\n\n<p><strong>Y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng t\u1ed1i thi\u1ec3u<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u1edbi nh\u1ea5t&nbsp;<a href=\"https:\/\/www.google.com\/intl\/en-US\/chrome\/browser\/\" target=\"_blank\" rel=\"noreferrer noopener\">M\u1ea1 cr\u00f4m<\/a>,&nbsp;<a href=\"http:\/\/www.mozilla.org\/en-US\/firefox\/new\/\" target=\"_blank\" rel=\"noreferrer noopener\">Tr\u00ecnh duy\u1ec7t Firefox<\/a>,&nbsp;<a href=\"http:\/\/www.apple.com\/safari\/\" target=\"_blank\" rel=\"noreferrer noopener\">Cu\u1ed9c \u0111i s\u0103n<\/a>,&nbsp;<a href=\"https:\/\/www.microsoft.com\/en-us\/windows\/microsoft-edge\" target=\"_blank\" rel=\"noreferrer noopener\">B\u1edd r\u00eca<\/a>,&nbsp;<a href=\"https:\/\/www.opera.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Nh\u1ea1c k\u1ecbch<\/a>&nbsp;ho\u1eb7c&nbsp;<a href=\"http:\/\/windows.microsoft.com\/en-us\/internet-explorer\/ie-11-worldwide-languages\" target=\"_blank\" rel=\"noreferrer noopener\">IE11<\/a>&nbsp;cho m\u00e1y t\u00ednh \u0111\u1ec3 b\u00e0n\/m\u00e1y t\u00ednh x\u00e1ch tay<\/li>\n\n\n\n<li>K\u1ebft n\u1ed1i b\u0103ng th\u00f4ng r\u1ed9ng v\u1edbi t\u1ed1c \u0111\u1ed9 t\u1ed1i thi\u1ec3u l\u00e0 5Mbit ho\u1eb7c 800kbps<\/li>\n\n\n\n<li>Xin l\u01b0u \u00fd r\u1eb1ng Flash Player kh\u00f4ng b\u1eaft bu\u1ed9c&nbsp;<\/li>\n<\/ul>\n\n\n\n<p><strong>Y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a PC<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>N\u1ec1n t\u1ea3ng: Windows 7 tr\u1edf l\u00ean \u0111\u00e3 c\u00e0i \u0111\u1eb7t b\u1ea3n c\u1eadp nh\u1eadt m\u1edbi nh\u1ea5t<\/li>\n\n\n\n<li>RAM: 4GB tr\u1edf l\u00ean<\/li>\n\n\n\n<li>Video: Kh\u1ea3 n\u0103ng xu\u1ea5t \u0111\u1ed3 h\u1ecda<\/li>\n\n\n\n<li>\u00c2m thanh: Kh\u1ea3 n\u0103ng ph\u00e1t ra \u00e2m thanh<\/li>\n<\/ul>\n\n\n\n<p><strong>Y\u00eau c\u1ea7u c\u1ee5 th\u1ec3 c\u1ee7a Mac<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>N\u1ec1n t\u1ea3ng: Mac OS X 10.12 tr\u1edf l\u00ean \u0111\u00e3 c\u00e0i \u0111\u1eb7t b\u1ea3n c\u1eadp nh\u1eadt m\u1edbi nh\u1ea5t<\/li>\n\n\n\n<li>RAM: 4GB tr\u1edf l\u00ean<\/li>\n\n\n\n<li>Video: Kh\u1ea3 n\u0103ng xu\u1ea5t \u0111\u1ed3 h\u1ecda<\/li>\n\n\n\n<li>\u00c2m thanh: Kh\u1ea3 n\u0103ng ph\u00e1t ra \u00e2m thanh<\/li>\n<\/ul>\n\n\n\n<p><strong>Y\u00eau c\u1ea7u v\u1ec1 thi\u1ebft b\u1ecb di \u0111\u1ed9ng<\/strong><\/p>\n\n\n\n<p>iOS 12.0 tr\u1edf l\u00ean<br>Android 6.0 tr\u1edf l\u00ean<\/p>\n\n\n\n<p>Tr\u00ecnh duy\u1ec7t di \u0111\u1ed9ng: Safari ho\u1eb7c Chrome tr\u00ean iOS v\u00e0 Chrome tr\u00ean Android.&nbsp;&nbsp;<\/p>\n\n\n\n<p><strong>T\u00f4i \u0111ang s\u1eed d\u1ee5ng tr\u00ecnh duy\u1ec7t n\u00e0o<\/strong><\/p>\n\n\n\n<p>\u0110\u1ec3 t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 h\u1ec7 th\u1ed1ng c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n,&nbsp;<a href=\"http:\/\/www.thismachine.info\/\" target=\"_blank\" rel=\"noreferrer noopener\">trang web n\u00e0y<\/a>&nbsp;s\u1ebd cho b\u1ea1n bi\u1ebft tr\u00ecnh duy\u1ec7t v\u00e0 h\u1ec7 \u0111i\u1ec1u h\u00e0nh b\u1ea1n \u0111ang s\u1eed d\u1ee5ng.&nbsp;<\/p>\n\n\n\n<p>\u0110\u1ec3 xem c\u00e1c kh\u00f3a h\u1ecdc, ch\u00fang t\u00f4i khuy\u00ean b\u1ea1n n\u00ean s\u1eed d\u1ee5ng Google Chrome. B\u1ea1n c\u00f3 th\u1ec3 t\u1ea3i xu\u1ed1ng Chrome mi\u1ec5n ph\u00ed&nbsp;<a href=\"https:\/\/www.google.com\/intl\/en-US\/chrome\/browser\/desktop\/index.html\" target=\"_blank\" rel=\"noreferrer noopener\">\u0111\u00e2y<\/a>.<\/p>\n\n\n\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Lesson Playback Issues If you\u2019re encountering audio or lesson issues while attempting to watch a course on a browser, this article explains various ways to troubleshoot these problems. Our support team will also follow this guide when responding to inquiries regarding lesson playback.&nbsp; Please note that a broadband connection with a minimum speed of 5Mbit [&hellip;]<\/p>\n","protected":false},"author":35,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_yoast_wpseo_focuskw":"","_yoast_wpseo_metadesc":"","_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"class_list":{"0":"post-163975","1":"page","2":"type-page","3":"status-publish","5":"entry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>System Support - NailKnowledge<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/nailknowledge.org\/vi\/system-support\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"System Support - NailKnowledge\" \/>\n<meta property=\"og:description\" content=\"Lesson Playback Issues If you\u2019re encountering audio or lesson issues while attempting to watch a course on a browser, this article explains various ways to troubleshoot these problems. 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