{"id":121019,"date":"2025-11-25T09:17:00","date_gmt":"2025-11-25T02:17:00","guid":{"rendered":"https:\/\/tino.vn\/blog\/?p=121019"},"modified":"2026-01-02T17:00:23","modified_gmt":"2026-01-02T10:00:23","slug":"sua-loi-sorry-this-file-type-is-not-permitted-for-security-reasons","status":"publish","type":"post","link":"https:\/\/tino.vn\/blog\/sua-loi-sorry-this-file-type-is-not-permitted-for-security-reasons\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn s\u1eeda l\u1ed7i Sorry, This File Type Is Not Permitted for Security Reasons trong WordPress (2026)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Khi t\u1ea3i l\u00ean m\u1ed9t t\u1ec7p tin trong<a href=\"https:\/\/tino.vn\/blog\/wordpress-la-gi\/\" data-type=\"post\" data-id=\"15589\" target=\"_blank\" rel=\"noreferrer noopener\"> WordPress<\/a>, b\u1ea1n c\u00f3 th\u1ec3 g\u1eb7p l\u1ed7i: \u201cSorry, This File Type Is Not Permitted for Security Reasons\u201d. \u0110\u00e2y l\u00e0 m\u1ed9t c\u01a1 ch\u1ebf b\u1ea3o m\u1eadt c\u1ee7a WordPress nh\u1eb1m ng\u0103n ch\u1eb7n c\u00e1c t\u1ec7p c\u00f3 \u0111\u1ecbnh d\u1ea1ng kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3. Tuy nhi\u00ean, n\u1ebfu b\u1ea1n c\u1ea7n t\u1ea3i l\u00ean m\u1ed9t \u0111\u1ecbnh d\u1ea1ng t\u1ec7p \u0111\u1eb7c bi\u1ec7t, c\u00f3 nhi\u1ec1u c\u00e1ch \u0111\u1ec3 kh\u1eafc ph\u1ee5c l\u1ed7i n\u00e0y. B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y s\u1ebd h\u01b0\u1edbng d\u1eabn b\u1ea1n chi ti\u1ebft c\u00e1ch s\u1eeda l\u1ed7i Sorry, This File Type Is Not Permitted for Security Reasons.<\/strong><\/p>\n\n\n\n<h2 id=\"L\u1ed7i_Sorry,_This_File_Type_Is_Not_Permitted_for_Security_Reasons_trong_WordPress_l\u00e0_g\u00ec?\"><a id=\"post-121019-_8a635wa2ueu2\"><\/a>L\u1ed7i Sorry, This File Type Is Not Permitted for Security Reasons trong WordPress l\u00e0 g\u00ec?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ed7i &#8220;Sorry, This File Type Is Not Permitted for Security Reasons&#8221; trong WordPress l\u00e0 m\u1ed9t th\u00f4ng b\u00e1o xu\u1ea5t hi\u1ec7n khi ng\u01b0\u1eddi d\u00f9ng c\u1ed1 g\u1eafng t\u1ea3i l\u00ean m\u1ed9t lo\u1ea1i file kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ec7 th\u1ed1ng h\u1ed7 tr\u1ee3 ho\u1eb7c b\u1ecb ch\u1eb7n v\u00ec l\u00fd do b\u1ea3o m\u1eadt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1eb7c \u0111\u1ecbnh, WordPress ch\u1ec9 cho ph\u00e9p t\u1ea3i l\u00ean c\u00e1c \u0111\u1ecbnh d\u1ea1ng file ph\u1ed5 bi\u1ebfn nh\u01b0 h\u00ecnh \u1ea3nh (JPEG, PNG, GIF), t\u00e0i li\u1ec7u (PDF, DOCX) v\u00e0 m\u1ed9t s\u1ed1 lo\u1ea1i media kh\u00e1c. N\u1ebfu b\u1ea1n c\u1ed1 g\u1eafng upload c\u00e1c file c\u00f3 \u0111u\u00f4i kh\u00f4ng n\u1eb1m trong danh s\u00e1ch n\u00e0y \u2013 ch\u1eb3ng h\u1ea1n nh\u01b0 file th\u1ef1c thi (.exe), file SVG ho\u1eb7c c\u00e1c \u0111\u1ecbnh d\u1ea1ng \u00edt ph\u1ed5 bi\u1ebfn kh\u00e1c \u2013 h\u1ec7 th\u1ed1ng s\u1ebd t\u1eeb ch\u1ed1i v\u00e0 hi\u1ec3n th\u1ecb th\u00f4ng b\u00e1o l\u1ed7i tr\u00ean.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-1.png\" alt=\"L\u1ed7i Sorry, This File Type Is Not Permitted for Security Reasons trong WordPress l\u00e0 g\u00ec?\" class=\"wp-image-121020\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-1.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-1-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>L\u1ed7i Sorry, This File Type Is Not Permitted for Security Reasons trong WordPress l\u00e0 g\u00ec?<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y nh\u1eb1m \u0111\u1ea3m b\u1ea3o an to\u00e0n cho website, ng\u0103n ch\u1eb7n vi\u1ec7c t\u1ea3i l\u00ean c\u00e1c file \u0111\u1ed9c h\u1ea1i c\u00f3 th\u1ec3 g\u00e2y nguy hi\u1ec3m cho h\u1ec7 th\u1ed1ng ho\u1eb7c ng\u01b0\u1eddi d\u00f9ng truy c\u1eadp. Tuy nhi\u00ean, trong nhi\u1ec1u tr\u01b0\u1eddng h\u1ee3p, \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t r\u00e0o c\u1ea3n kh\u00f4ng mong mu\u1ed1n n\u1ebfu b\u1ea1n c\u1ea7n s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ecbnh d\u1ea1ng file \u0111\u1eb7c bi\u1ec7t cho c\u00f4ng vi\u1ec7c c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<h3 id=\"C\u00e1c_nguy\u00ean_nh\u00e2n_ph\u1ed5_bi\u1ebfn_g\u00e2y_ra_l\u1ed7i_&#8220;Sorry,_This_File_Type_Is_Not_Permitted_for_Security_Reasons&#8221;_trong_WordPress\"><a id=\"post-121019-_k8cj0yb0kn57\"><\/a><strong>C\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra l\u1ed7i &#8220;Sorry, This File Type Is Not Permitted for Security Reasons&#8221; trong WordPress<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u0110\u1ecbnh d\u1ea1ng file kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 m\u1eb7c \u0111\u1ecbnh:<\/strong> WordPress ch\u1ec9 cho ph\u00e9p t\u1ea3i l\u00ean m\u1ed9t s\u1ed1 lo\u1ea1i file c\u1ee5 th\u1ec3 (nh\u01b0 h\u00ecnh \u1ea3nh, PDF, DOCX). C\u00e1c \u0111\u1ecbnh d\u1ea1ng kh\u00e1c nh\u01b0 .exe, .svg, ho\u1eb7c .zip th\u01b0\u1eddng b\u1ecb ch\u1eb7n v\u00ec l\u00fd do b\u1ea3o m\u1eadt.<\/li>\n\n\n\n<li><strong>C\u00e0i \u0111\u1eb7t b\u1ea3o m\u1eadt tr\u00ean hosting:<\/strong> M\u1ed9t s\u1ed1 nh\u00e0 cung c\u1ea5p hosting \u00e1p d\u1ee5ng c\u00e1c quy t\u1eafc b\u1ea3o m\u1eadt nghi\u00eam ng\u1eb7t, t\u1ef1 \u0111\u1ed9ng v\u00f4 hi\u1ec7u h\u00f3a vi\u1ec7c t\u1ea3i l\u00ean c\u00e1c lo\u1ea1i file kh\u00f4ng ph\u1ed5 bi\u1ebfn \u0111\u1ec3 gi\u1ea3m thi\u1ec3u r\u1ee7i ro t\u1ea5n c\u00f4ng m\u00e3 \u0111\u1ed9c.<\/li>\n\n\n\n<li><strong>Thi\u1ebfu quy\u1ec1n t\u1ea3i l\u00ean t\u1ec7p tin trong vai tr\u00f2 ng\u01b0\u1eddi d\u00f9ng:<\/strong> M\u1ed9t s\u1ed1 t\u00e0i kho\u1ea3n ng\u01b0\u1eddi d\u00f9ng WordPress (nh\u01b0 Subscriber, Contributor) kh\u00f4ng c\u00f3 quy\u1ec1n t\u1ea3i l\u00ean t\u1ec7p tin nh\u1ea5t \u0111\u1ecbnh.<\/li>\n\n\n\n<li><strong>Xung \u0111\u1ed9t plugin ho\u1eb7c theme:<\/strong> M\u1ed9t s\u1ed1 plugin b\u1ea3o m\u1eadt ho\u1eb7c theme t\u00f9y ch\u1ec9nh c\u00f3 th\u1ec3 h\u1ea1n ch\u1ebf th\u00eam c\u00e1c lo\u1ea1i file m\u00e0 WordPress cho ph\u00e9p t\u1ea3i l\u00ean.<\/li>\n\n\n\n<li><strong>C\u1ea5u h\u00ecnh t\u1ec7p .htaccess ho\u1eb7c wp-config.php sai: <\/strong>N\u1ebfu c\u1ea5u h\u00ecnh file .htaccess ho\u1eb7c wp-config.php kh\u00f4ng \u0111\u00fang, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 v\u00f4 t\u00ecnh ch\u1eb7n c\u00e1c file h\u1ee3p l\u1ec7.<\/li>\n\n\n\n<li><strong>Phi\u00ean b\u1ea3n WordPress ho\u1eb7c plugin l\u1ed7i th\u1eddi:<\/strong> Vi\u1ec7c s\u1eed d\u1ee5ng phi\u00ean b\u1ea3n c\u0169 c\u1ee7a WordPress ho\u1eb7c c\u00e1c plugin li\u00ean quan \u0111\u1ebfn upload c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn l\u1ed7i kh\u00f4ng t\u01b0\u01a1ng th\u00edch.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-2.png\" alt=\"C\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra l\u1ed7i &quot;Sorry, This File Type Is Not Permitted for Security Reasons&quot; trong WordPress\" class=\"wp-image-121021\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-2.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-2-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>C\u00e1c nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn g\u00e2y ra l\u1ed7i &#8220;Sorry, This File Type Is Not Permitted for Security Reasons&#8221; trong WordPress<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<h2 id=\"T\u1ed5ng_h\u1ee3p_5_c\u00e1ch_s\u1eeda_L\u1ed7i_Sorry,_This_File_Type_Is_Not_Permitted_for_Security_Reasons_Trong_WordPress\"><a id=\"post-121019-_e40f1b6zm47x\"><\/a><strong>T\u1ed5ng h\u1ee3p 5 c\u00e1ch s\u1eeda L\u1ed7i Sorry, This File Type Is Not Permitted for Security Reasons Trong WordPress<\/strong><\/h2>\n\n\n\n<h3 id=\"1._Ki\u1ec3m_tra_l\u1ea1i_ph\u1ea7n_m\u1edf_r\u1ed9ng_c\u1ee7a_t\u1ec7p_tin\"><a id=\"post-121019-_wfnhk2rejusv\"><\/a><strong>1. Ki\u1ec3m tra l\u1ea1i ph\u1ea7n m\u1edf r\u1ed9ng c\u1ee7a t\u1ec7p tin<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00f4i khi, ngay c\u1ea3 khi t\u1ea3i l\u00ean c\u00e1c t\u1ec7p tin h\u1ee3p l\u1ec7, b\u1ea1n v\u1eabn c\u00f3 th\u1ec3 g\u1eb7p l\u1ed7i n\u00e0y n\u1ebfu ph\u1ea7n m\u1edf r\u1ed9ng t\u1ec7p b\u1ecb sai ho\u1eb7c v\u00f4 t\u00ecnh b\u1ecb thay \u0111\u1ed5i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span style=\"text-decoration: underline;\">Tr\u00ean Windows:<\/span><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 1: <\/strong>M\u1edf<strong> File Explorer<\/strong> v\u00e0 t\u00ecm t\u1ec7p c\u1ea7n ki\u1ec3m tra.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 2: <\/strong>Tr\u00ean thanh \u0111i\u1ec1u h\u01b0\u1edbng, ch\u1ecdn <strong>View<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-3.png\" alt=\"Ki\u1ec3m tra l\u1ea1i ph\u1ea7n m\u1edf r\u1ed9ng c\u1ee7a t\u1ec7p tin tr\u00ean Windows\" class=\"wp-image-121022\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-3.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-3-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Ki\u1ec3m tra l\u1ea1i ph\u1ea7n m\u1edf r\u1ed9ng c\u1ee7a t\u1ec7p tin tr\u00ean Windows<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 3: <\/strong>T\u00edch v\u00e0o \u00f4 <strong>File name extensions<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-4.png\" alt=\"Ki\u1ec3m tra l\u1ea1i ph\u1ea7n m\u1edf r\u1ed9ng c\u1ee7a t\u1ec7p tin tr\u00ean Windows\" class=\"wp-image-121023\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-4.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-4-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong><strong>Ki\u1ec3m tra l\u1ea1i ph\u1ea7n m\u1edf r\u1ed9ng c\u1ee7a t\u1ec7p tin tr\u00ean Windows<\/strong><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu th\u1ea5y ph\u1ea7n m\u1edf r\u1ed9ng sai, nh\u1ea5p chu\u1ed9t ph\u1ea3i v\u00e0o t\u1ec7p v\u00e0 ch\u1ecdn <strong>Rename<\/strong>, sau \u0111\u00f3 s\u1eeda l\u1ea1i ph\u1ea7n m\u1edf r\u1ed9ng \u0111\u00fang.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span style=\"text-decoration: underline;\">Tr\u00ean Mac:<\/span><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 1:<\/strong> M\u1edf <strong>Finder<\/strong> \u2192 <strong>Preferences<\/strong> \u2192 <strong>Advanced<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 2<\/strong>: B\u1eadt t\u00f9y ch\u1ecdn <strong>Show all filename extensions<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-5.png\" alt=\"Ki\u1ec3m tra l\u1ea1i ph\u1ea7n m\u1edf r\u1ed9ng c\u1ee7a t\u1ec7p tin tr\u00ean Windows\" class=\"wp-image-121024\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-5.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-5-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong><strong>Ki\u1ec3m tra l\u1ea1i ph\u1ea7n m\u1edf r\u1ed9ng c\u1ee7a t\u1ec7p tin tr\u00ean Windows<\/strong><\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Sau khi s\u1eeda ph\u1ea7n m\u1edf r\u1ed9ng, h\u00e3y th\u1eed t\u1ea3i l\u1ea1i t\u1ec7p. N\u1ebfu v\u1eabn g\u1eb7p l\u1ed7i, h\u00e3y th\u1eed c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp theo.<\/p>\n\n\n\n<h3 id=\"2._Thay_\u0111\u1ed5i_c\u00e0i_\u0111\u1eb7t_trong_WordPress_Multisite\"><a id=\"post-121019-_u5e2dnr3zgxd\"><\/a><strong>2. Thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t trong WordPress Multisite<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang s\u1eed d\u1ee5ng WordPress Multisite, b\u1ea1n c\u00f3 th\u1ec3 th\u00eam c\u00e1c \u0111\u1ecbnh d\u1ea1ng t\u1ec7p \u0111\u01b0\u1ee3c ph\u00e9p t\u1ea3i l\u00ean b\u1eb1ng c\u00e1c b\u01b0\u1edbc sau:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 1: <\/strong>Truy c\u1eadp WordPress Dashboard.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 2:<\/strong> V\u00e0o <strong>My Sites<\/strong> \u2192<strong> Network Admin<\/strong> \u2192 <strong>Settings <\/strong>\u2192 <strong>Network Settings<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 3: <\/strong>K\u00e9o xu\u1ed1ng ph\u1ea7n <strong>Upload Settings<\/strong>. Th\u00eam c\u00e1c ph\u1ea7n m\u1edf r\u1ed9ng t\u1ec7p mong mu\u1ed1n v\u00e0o m\u1ee5c <strong>Upload file types<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-6.png\" alt=\"Thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t trong WordPress Multisite\" class=\"wp-image-121025\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-6.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-6-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Thay \u0111\u1ed5i c\u00e0i \u0111\u1eb7t trong WordPress Multisite<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">L\u01b0u thay \u0111\u1ed5i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u01b0u \u00fd: P<\/strong>h\u01b0\u01a1ng ph\u00e1p n\u00e0y ch\u1ec9 ho\u1ea1t \u0111\u1ed9ng n\u1ebfu b\u1ea1n \u0111\u00e3 b\u1eadt WordPress Multisite. Ngo\u00e0i ra, n\u00f3 ch\u1ec9 h\u1ed7 tr\u1ee3 th\u00eam m\u1ed9t s\u1ed1 \u0111\u1ecbnh d\u1ea1ng nh\u01b0 .tiff, .midi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 cho ph\u00e9p t\u1ea3i l\u00ean t\u1ea5t c\u1ea3 \u0111\u1ecbnh d\u1ea1ng, b\u1ea1n c\u1ea7n ch\u1ec9nh s\u1eeda t\u1ec7p wp-config.php.<\/p>\n\n\n\n<h3 id=\"3._Ch\u1ec9nh_s\u1eeda_t\u1ec7p_wp-config.php\"><a id=\"post-121019-_oh485y4p7bc9\"><\/a><strong>3. Ch\u1ec9nh s\u1eeda t\u1ec7p wp-config.php<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u1ec9nh s\u1eeda t\u1ec7p wp-config.php gi\u00fap b\u1ea1n t\u1ea3i l\u00ean m\u1ecdi lo\u1ea1i t\u1ec7p, k\u1ec3 c\u1ea3 nh\u1eefng t\u1ec7p kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3. Tuy nhi\u00ean, vi\u1ec7c ch\u1ec9nh s\u1eeda t\u1ec7p h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 g\u00e2y r\u1ee7i ro, v\u00ec v\u1eady h\u00e3y sao l\u01b0u website tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch ch\u1ec9nh s\u1eeda:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 1: <\/strong>Truy c\u1eadp th\u01b0 m\u1ee5c c\u00e0i \u0111\u1eb7t WordPress qua FTP Client (<a href=\"https:\/\/filezilla-project.org\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/filezilla-project.org\/\" rel=\"noreferrer noopener nofollow\">FileZilla<\/a>) <a href=\"https:\/\/filezilla-project.org\/\" rel=\"nofollow noopener\" target=\"_blank\"><\/a>ho\u1eb7c File Manager (cPanel)<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-7.png\" alt=\"Ch\u1ec9nh s\u1eeda t\u1ec7p wp-config.php\" class=\"wp-image-121026\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-7.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-7-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Ch\u1ec9nh s\u1eeda t\u1ec7p wp-config.php<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 2:<\/strong> \u0110i\u1ec1u h\u01b0\u1edbng \u0111\u1ebfn <strong>public_html <\/strong>v\u00e0 m\u1edf t\u1ec7p<strong> wp-config.php<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-8.png\" alt=\"Ch\u1ec9nh s\u1eeda t\u1ec7p wp-config.php\" class=\"wp-image-121027\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-8.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-8-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Ch\u1ec9nh s\u1eeda t\u1ec7p wp-config.php<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 3:<\/strong> Th\u00eam \u0111o\u1ea1n m\u00e3 sau tr\u01b0\u1edbc d\u00f2ng &#8220;<strong>That&#8217;s all, stop editing! Happy publishing.<\/strong>&#8220;:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>define('ALLOW_UNFILTERED_UPLOADS', true);<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 4: <\/strong>L\u01b0u thay \u0111\u1ed5i.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-9.png\" alt=\"Ch\u1ec9nh s\u1eeda t\u1ec7p wp-config.php\" class=\"wp-image-121028\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-9.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-9-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Ch\u1ec9nh s\u1eeda t\u1ec7p wp-config.php<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u01b0u \u00fd:<\/strong> Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 ti\u1ec1m \u1ea9n r\u1ee7i ro b\u1ea3o m\u1eadt, do \u0111\u00f3 b\u1ea1n n\u00ean x\u00f3a \u0111o\u1ea1n m\u00e3 sau khi t\u1ea3i l\u00ean t\u1ec7p c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n<h3 id=\"4._Ch\u1ec9nh_s\u1eeda_t\u1ec7p_functions.php_c\u1ee7a_theme\"><a id=\"post-121019-_bb2hvrsl94pf\"><\/a><strong>4. Ch\u1ec9nh s\u1eeda t\u1ec7p functions.php c\u1ee7a theme<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu kh\u00f4ng mu\u1ed1n ch\u1ec9nh s\u1eeda wp-config.php, b\u1ea1n c\u00f3 th\u1ec3 th\u00eam b\u1ed9 l\u1ecdc upload mimes v\u00e0o t\u1ec7p functions.php c\u1ee7a theme \u0111\u1ec3 cho ph\u00e9p t\u1eebng lo\u1ea1i t\u1ec7p c\u1ee5 th\u1ec3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"text-decoration: underline;\"><strong>C\u00e1ch th\u1ef1c hi\u1ec7n:<\/strong><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 1: <\/strong>Truy c\u1eadp <strong>File Manager <\/strong>th\u00f4ng qua cPanel ho\u1eb7c FTP \u2192 v\u00e0o th\u01b0 m\u1ee5c <strong>public_html<\/strong> \u2192 <strong>wp-content<\/strong> \u2192 <strong>themes<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 2: <\/strong>M\u1edf th\u01b0 m\u1ee5c c\u1ee7a theme \u0111ang s\u1eed d\u1ee5ng v\u00e0 ch\u1ec9nh s\u1eeda t\u1ec7p functions.php.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-10.png\" alt=\"Ch\u1ec9nh s\u1eeda t\u1ec7p functions.php c\u1ee7a theme\" class=\"wp-image-121029\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-10.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-10-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Ch\u1ec9nh s\u1eeda t\u1ec7p functions.php c\u1ee7a theme<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Th\u00eam \u0111o\u1ea1n m\u00e3 sau v\u00e0o cu\u1ed1i t\u1ec7p:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>function my_custom_mime_types( $mimes ) {\n\n\/\/ Th\u00eam \u0111\u1ecbnh d\u1ea1ng t\u1ec7p m\u1edbi t\u1ea1i \u0111\u00e2y\n\n$mimes&#91;'gpx'] = 'text\/gpsxml';\n\nreturn $mimes;\n\n}\n\nadd_filter( 'upload_mimes', 'my_custom_mime_types' );<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 3:<\/strong> L\u01b0u thay \u0111\u1ed5i.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-11.png\" alt=\"Ch\u1ec9nh s\u1eeda t\u1ec7p functions.php c\u1ee7a theme\" class=\"wp-image-121030\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-11.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-11-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Ch\u1ec9nh s\u1eeda t\u1ec7p functions.php c\u1ee7a theme<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>L\u01b0u \u00fd:<\/strong> M\u1ed9t s\u1ed1 h\u1ec7 \u0111i\u1ec1u h\u00e0nh s\u1eed d\u1ee5ng c\u00e1c gi\u00e1 tr\u1ecb MIME kh\u00e1c nhau. V\u00ed d\u1ee5, tr\u00ean macOS, b\u1ea1n n\u00ean thay \u0111\u1ed5i <code>$mimes['gpx'] = 'application\/gpsxml';<\/code><\/p>\n\n\n\n<h3 id=\"5._Th\u00eam_\u0111\u1ecbnh_d\u1ea1ng_t\u1ec7p_b\u1eb1ng_plugin\"><a id=\"post-121019-_4z4q2yykv90s\"><\/a><strong>5. Th\u00eam \u0111\u1ecbnh d\u1ea1ng t\u1ec7p b\u1eb1ng plugin<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">WordPress c\u00f3 nhi\u1ec1u plugin h\u1ed7 tr\u1ee3 t\u1ea3i l\u00ean c\u00e1c \u0111\u1ecbnh d\u1ea1ng t\u1ec7p kh\u00f4ng \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3. M\u1ed9t trong nh\u1eefng plugin ph\u1ed5 bi\u1ebfn l\u00e0 WP Add Mime Types.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span style=\"text-decoration: underline;\"><strong>C\u00e1ch s\u1eed d\u1ee5ng:<\/strong><\/span><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 1:<\/strong> C\u00e0i \u0111\u1eb7t v\u00e0 k\u00edch ho\u1ea1t plugin <strong>WP Add Mime Types<\/strong>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-12.png\" alt=\"Th\u00eam \u0111\u1ecbnh d\u1ea1ng t\u1ec7p b\u1eb1ng plugin\" class=\"wp-image-121031\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-12.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-12-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Th\u00eam \u0111\u1ecbnh d\u1ea1ng t\u1ec7p b\u1eb1ng plugin<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 2: <\/strong>Truy c\u1eadp <strong>Settings <\/strong>\u2192<strong> Mime Type Settings<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong ph\u1ea7n Add Values, nh\u1eadp \u0111\u1ecbnh d\u1ea1ng MIME t\u01b0\u01a1ng \u1ee9ng. V\u00ed d\u1ee5:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>woff = application\/x-font-woff<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-13.png\" alt=\"Th\u00eam \u0111\u1ecbnh d\u1ea1ng t\u1ec7p b\u1eb1ng plugin\" class=\"wp-image-121032\" title=\"\" srcset=\"https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-13.png 700w, https:\/\/tino.vn\/blog\/wp-content\/uploads\/2025\/11\/sua-loi-Sorry-This-File-Type-Is-Not-Permitted-for-Security-Reasons-13-300x171.png 300w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><strong>Th\u00eam \u0111\u1ecbnh d\u1ea1ng t\u1ec7p b\u1eb1ng plugin<\/strong><\/figcaption><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><strong>B\u01b0\u1edbc 3:<\/strong> Nh\u1ea5n <strong>Save<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sau khi th\u00eam \u0111\u1ecbnh d\u1ea1ng MIME, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea3i l\u1ea1i t\u1ec7p m\u00e0 kh\u00f4ng g\u1eb7p l\u1ed7i.<\/p>\n\n\n\n<h3 id=\"K\u1ebft_lu\u1eadn\"><a id=\"post-121019-_9ykzpkbc85br\"><\/a><strong>K\u1ebft lu\u1eadn<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1ed7i \u201cSorry, This File Type Is Not Permitted for Security Reasons\u201d l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn trong WordPress nh\u01b0ng c\u00f3 th\u1ec3 kh\u1eafc ph\u1ee5c d\u1ec5 d\u00e0ng b\u1eb1ng nhi\u1ec1u c\u00e1ch kh\u00e1c nhau. T\u00f9y v\u00e0o nhu c\u1ea7u s\u1eed d\u1ee5ng v\u00e0 m\u1ee9c \u0111\u1ed9 an to\u00e0n, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ph\u00f9 h\u1ee3p nh\u1ea5t. Ch\u00fac b\u1ea1n th\u00e0nh c\u00f4ng!<\/p>\n\n\n\n<h2 id=\"Nh\u1eefng_c\u00e2u_h\u1ecfi_th\u01b0\u1eddng_g\u1eb7p\"><a id=\"post-121019-_ba8emtfnloc8\"><\/a>Nh\u1eefng c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"N\u1ebfu_t\u1ea5t_c\u1ea3_c\u00e1c_ph\u01b0\u01a1ng_ph\u00e1p_tr\u00ean_kh\u00f4ng_th\u00e0nh_c\u00f4ng,_t\u00f4i_n\u00ean_l\u00e0m_g\u00ec?\">N\u1ebfu t\u1ea5t c\u1ea3 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p tr\u00ean kh\u00f4ng th\u00e0nh c\u00f4ng, t\u00f4i n\u00ean l\u00e0m g\u00ec?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p class=\"wp-block-paragraph\">Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, l\u1ed7i kh\u00f4ng \u0111\u1ebfn t\u1eeb WordPress m\u00e0 do nh\u00e0 cung c\u1ea5p hosting gi\u1edbi h\u1ea1n c\u00e1c lo\u1ea1i t\u1ec7p t\u1ea3i l\u00ean v\u00ec l\u00fd do b\u1ea3o m\u1eadt. N\u1ebfu t\u1ea5t c\u1ea3 ph\u01b0\u01a1ng ph\u00e1p tr\u00ean kh\u00f4ng hi\u1ec7u qu\u1ea3, h\u00e3y li\u00ean h\u1ec7 v\u1edbi b\u1ed9 ph\u1eadn h\u1ed7 tr\u1ee3 c\u1ee7a nh\u00e0 cung c\u1ea5p hosting \u0111\u1ec3 y\u00eau c\u1ea7u m\u1edf kh\u00f3a \u0111\u1ecbnh d\u1ea1ng t\u1ec7p c\u1ea7n t\u1ea3i l\u00ean.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h2 id=\"T\u00f4i_c\u00f3_n\u00ean_cho_ph\u00e9p_t\u1ea3i_l\u00ean_t\u1ea5t_c\u1ea3_c\u00e1c_lo\u1ea1i_t\u1ec7p_kh\u00f4ng?\">T\u00f4i c\u00f3 n\u00ean cho ph\u00e9p t\u1ea3i l\u00ean t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i t\u1ec7p kh\u00f4ng?<\/h2>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p class=\"wp-block-paragraph\">C\u00f3, nh\u01b0ng \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 t\u1ea1o ra r\u1ee7i ro b\u1ea3o m\u1eadt. 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