{"id":8041,"date":"2023-11-01T10:39:18","date_gmt":"2023-11-01T17:39:18","guid":{"rendered":"https:\/\/at.csudh.edu\/canvas\/?post_type=knowledgebase&#038;p=8041"},"modified":"2024-12-17T12:38:27","modified_gmt":"2024-12-17T20:38:27","slug":"page-failed-to-load-error-201-macos","status":"publish","type":"knowledgebase","link":"https:\/\/at.csudh.edu\/canvas\/knowledge-base\/rldb-troubleshooting\/page-failed-to-load-error-201-macos\/","title":{"rendered":"Page Failed to Load Error -201 (macOS)"},"content":{"rendered":"\n<p class=\"has-medium-font-size\">LockDown Browser\u2019s minimum system requirement for Macs is <a href=\"https:\/\/support.apple.com\/en-us\/102765\" target=\"_blank\" rel=\"noreferrer noopener\">macOS 10.15 (Catalina)<\/a>, which was released in 2019.<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><a href=\"https:\/\/support.apple.com\/en-us\/HT201260\" data-type=\"link\" data-id=\"https:\/\/support.apple.com\/en-us\/HT201260\" target=\"_blank\" rel=\"noreferrer noopener\">Find out which macOS your Mac is using<\/a>.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Attempting to open LockDown Browser on a Mac running a version of macOS before 10.12 (Sierra) will display the following error:<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>ERR_CERT_DATE_INVALID (-201)<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"731\" src=\"https:\/\/at.csudh.edu\/canvas\/wp-content\/uploads\/2023\/11\/LockDown_Browser_Error_-201-1-1024x731.jpg\" alt=\"LockDown Browser displaying &quot;Page failed to load error&quot; message.\" class=\"wp-image-11152\" style=\"width:763px\" srcset=\"https:\/\/at.csudh.edu\/canvas\/wp-content\/uploads\/2023\/11\/LockDown_Browser_Error_-201-1-1024x731.jpg 1024w, https:\/\/at.csudh.edu\/canvas\/wp-content\/uploads\/2023\/11\/LockDown_Browser_Error_-201-1-300x214.jpg 300w, https:\/\/at.csudh.edu\/canvas\/wp-content\/uploads\/2023\/11\/LockDown_Browser_Error_-201-1-768x548.jpg 768w, https:\/\/at.csudh.edu\/canvas\/wp-content\/uploads\/2023\/11\/LockDown_Browser_Error_-201-1.jpg 1525w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Page failed to load screen<\/figcaption><\/figure>\n\n\n\n<p class=\"has-medium-font-size\">The error indicates an expired certificate. Upgrading to a more recent version of macOS fixes this issue. We recommend upgrading to at least macOS Mojave (10.14). Mojave was released in 2018.<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><a href=\"https:\/\/support.apple.com\/en-us\/HT208969\" target=\"_blank\" rel=\"noreferrer noopener\">How to upgrade to macOS Mojave (10.14)<\/a>.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Downloading the upgrade file and performing the macOS upgrade can take more than an hour. Please backup your work and connect your laptop to power before performing the upgrade.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">If your computer cannot upgrade to a newer version of macOS, you can attempt to reserve a laptop from the <a href=\"https:\/\/techcheckout.csudh.edu\" data-type=\"link\" data-id=\"https:\/\/techcheckout.csudh.edu\" target=\"_blank\" rel=\"noreferrer noopener\">CSUDH Technology Checkout Program<\/a>. Please check with <a href=\"https:\/\/techcheckout.csudh.edu\" data-type=\"link\" data-id=\"https:\/\/techcheckout.csudh.edu\" target=\"_blank\" rel=\"noreferrer noopener\">TechCheckout<\/a> regarding laptop availability.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>LockDown Browser\u2019s minimum system requirement for Macs is macOS 10.15 (Catalina), which was released in 2019. Find out which macOS your Mac is using. Attempting to open LockDown Browser on a Mac running a version of macOS before 10.12 (Sierra) will display the following error: ERR_CERT_DATE_INVALID (-201) The error indicates an expired certificate. Upgrading to&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","knowledgebase_cat":[502],"class_list":["post-8041","knowledgebase","type-knowledgebase","status-publish","hentry","knowledgebase_cat-rldb-troubleshooting"],"_links":{"self":[{"href":"https:\/\/at.csudh.edu\/canvas\/wp-json\/wp\/v2\/knowledgebase\/8041","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/at.csudh.edu\/canvas\/wp-json\/wp\/v2\/knowledgebase"}],"about":[{"href":"https:\/\/at.csudh.edu\/canvas\/wp-json\/wp\/v2\/types\/knowledgebase"}],"author":[{"embeddable":true,"href":"https:\/\/at.csudh.edu\/canvas\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/at.csudh.edu\/canvas\/wp-json\/wp\/v2\/comments?post=8041"}],"version-history":[{"count":9,"href":"https:\/\/at.csudh.edu\/canvas\/wp-json\/wp\/v2\/knowledgebase\/8041\/revisions"}],"predecessor-version":[{"id":11180,"href":"https:\/\/at.csudh.edu\/canvas\/wp-json\/wp\/v2\/knowledgebase\/8041\/revisions\/11180"}],"wp:attachment":[{"href":"https:\/\/at.csudh.edu\/canvas\/wp-json\/wp\/v2\/media?parent=8041"}],"wp:term":[{"taxonomy":"knowledgebase_cat","embeddable":true,"href":"https:\/\/at.csudh.edu\/canvas\/wp-json\/wp\/v2\/knowledgebase_cat?post=8041"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}