Request for pointer lock was denied because the browser failed to lock the pointer.

The character encoding declaration of the HTML document was not found when prescanning the first 1024 bytes of the file. When viewed in a differently-configured browser, this page will reload automatically. The encoding declaration needs to be moved to be within the first 1024 bytes of the file.

The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must be declared in the document or in the transfer protocol.

The character encoding of the plain text document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the file needs to be declared in the transfer protocol or file needs to use a byte order mark as an encoding signature.

<p>Though the site seems valid, the browser was unable to establish a connection.</p><ul><li>Could the site be temporarily unavailable? Try again later.</li><li>Are you unable to browse other sites? Check the computer’s network connection.</li><li>Is your computer or network protected by a firewall or proxy? Incorrect settings can interfere with Web browsing.</li></ul>

<p>The browser prevented this page from loading in this way because the page has a content security policy that disallows it.</p>

<p>The requested address specified a port (e.g. <q>mozilla.org:80</q> for port 80 on mozilla.org) normally used for purposes <em>other</em> than Web browsing. The browser has canceled the request for your protection and security.</p>

<p>The browser could not find the host server for the provided address.</p><ul><li>Did you make a mistake when typing the domain? (e.g. <q><strong>ww</strong>.mozilla.org</q> instead of <q><strong>www</strong>.mozilla.org</q>)</li><li>Are you certain this domain address exists? Its registration may have expired.</li><li>Are you unable to browse other sites? Check your network connection and DNS server settings.</li><li>Is your computer or network protected by a firewall or proxy? Incorrect settings can interfere with Web browsing.</li></ul>

<p>The browser connected successfully, but the connection was interrupted while transferring information. Please try again.</p><ul><li>Are you unable to browse other sites? Check the computer’s network connection.</li><li>Still having trouble? Consult your network administrator or Internet provider for assistance.</li></ul>

<p>The browser is operating in its offline mode and cannot connect to the requested item.</p><ul><li>Is the computer connected to an active network?</li><li>Press &quot;Try Again&quot; to switch to online mode and reload the page.</li></ul>

<p>The requested site did not respond to a connection request and the browser has stopped waiting for a reply.</p><ul><li>Could the server be experiencing high demand or a temporary outage? Try again later.</li><li>Are you unable to browse other sites? Check the computer’s network connection.</li><li>Is your computer or network protected by a firewall or proxy? Incorrect settings can interfere with Web browsing.</li><li>Still having trouble? Consult your network administrator or Internet provider for assistance.</li></ul>

<p>The requested document is not available in the browser’s cache.</p><ul><li>As a security precaution, the browser does not automatically re-request sensitive documents.</li><li>Click Try Again to re-request the document from the website.</li></ul>

<p>The browser is configured to use a proxy server, but the proxy refused a connection.</p><ul><li>Is the browser’s proxy configuration correct? Check the settings and try again.</li><li>Does the proxy service allow connections from this network?</li><li>Still having trouble? Consult your network administrator or Internet provider for assistance.</li></ul>

<p>The browser is configured to use a proxy server, but the proxy could not be found.</p><ul><li>Is the browser’s proxy configuration correct? Check the settings and try again.</li><li>Is the computer connected to an active network?</li><li>Still having trouble? Consult your network administrator or Internet provider for assistance.</li></ul>

<p>The browser has stopped trying to retrieve the requested item. The site is redirecting the request in a way that will never complete.</p><ul><li>Have you disabled or blocked cookies required by this site?</li><li><em>NOTE</em>: If accepting the site’s cookies does not resolve the problem, it is likely a server configuration issue and not your computer.</li></ul>

<p>The address specifies a protocol (e.g. <q>wxyz://</q>) the browser does not recognize, so the browser cannot properly connect to the site.</p><ul><li>Are you trying to access multimedia or other non-text services? Check the site for extra requirements.</li><li>Some protocols may require third-party software or plugins before the browser can recognize them.</li></ul>

<p>The site responded to the network request in an unexpected way and the browser cannot continue.</p>

<p>The browser prevented this page from loading in this context because the page has an X-Frame-Options policy that disallows it.</p>