{"id":3764,"date":"2009-03-13T16:01:02","date_gmt":"2009-03-13T16:01:02","guid":{"rendered":"https:\/\/blogs.msdn.microsoft.com\/webdev\/2009\/03\/13\/asp-net-web-development-server-stops-working\/"},"modified":"2009-03-13T16:01:02","modified_gmt":"2009-03-13T16:01:02","slug":"asp-net-web-development-server-stops-working","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/dotnet\/asp-net-web-development-server-stops-working\/","title":{"rendered":"ASP.NET Web Development Server Stops Working"},"content":{"rendered":"<p>A <a href=\"http:\/\/www.microsoft.com\/security\/portal\/Entry.aspx?name=SettingsModifier:Win32\/PossibleHostsFileHijack&amp;threatid=1758608427027806866\" target=\"_blank\" rel=\"noopener\">Windows Defender and Microsoft Forefront Client Security signature file (1.53.256.0)<\/a> was released at 8:45 PM (PST) on March 9, 2009 to address a Win32\/PossibleHostFileHijack issue.&nbsp; This update modified the hosts file to prevent malicious redirection of websites.&nbsp; As a result, the entry for localhost may have been removed from the hosts file.&nbsp; When this entry is missing and a site is launched in the ASP.NET Web Development Server (aka Cassini) via Visual Studio, Internet Explorer displays &ldquo;Internet Explorer cannot display the webpage&rdquo;. <\/p>\n<p>To resolve this issue, open C:WindowsSystem32driversetchosts and add an entry for localhost: <\/p>\n<p>127.0.0.1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; localhost<\/p>\n<p>A new signature file (1.53.288.0) was released at 8:57 PM on March 9, 2009 that does not affect the localhost entry.<\/p>\n<p>More information about this signature file and additional details about the fix can be found at <a title=\"http:\/\/www.microsoft.com\/security\/portal\/Entry.aspx?name=SettingsModifier:Win32\/PossibleHostsFileHijack&amp;threatid=1758608427027806866\" href=\"http:\/\/www.microsoft.com\/security\/portal\/Entry.aspx?name=SettingsModifier:Win32\/PossibleHostsFileHijack&amp;threatid=1758608427027806866\">http:\/\/www.microsoft.com\/security\/portal\/Entry.aspx?name=SettingsModifier:Win32\/PossibleHostsFileHijack&amp;threatid=1758608427027806866<\/a> under the &ldquo;Recovery&rdquo; tab.<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A Windows Defender and Microsoft Forefront Client Security signature file (1.53.256.0) was released at 8:45 PM (PST) on March 9, 2009 to address a Win32\/PossibleHostFileHijack issue.&nbsp; This update modified the hosts file to prevent malicious redirection of websites.&nbsp; As a result, the entry for localhost may have been removed from the hosts file.&nbsp; When this [&hellip;]<\/p>\n","protected":false},"author":404,"featured_media":58792,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[197],"tags":[7335,31,7337,147],"class_list":["post-3764","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aspnet","tag-amyd","tag-asp-net","tag-cassini","tag-visual-studio"],"acf":[],"blog_post_summary":"<p>A Windows Defender and Microsoft Forefront Client Security signature file (1.53.256.0) was released at 8:45 PM (PST) on March 9, 2009 to address a Win32\/PossibleHostFileHijack issue.&nbsp; This update modified the hosts file to prevent malicious redirection of websites.&nbsp; As a result, the entry for localhost may have been removed from the hosts file.&nbsp; When this [&hellip;]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/posts\/3764","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/users\/404"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/comments?post=3764"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/posts\/3764\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/media\/58792"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/media?parent=3764"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/categories?post=3764"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/tags?post=3764"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}