{"id":33235,"date":"2021-06-08T11:25:57","date_gmt":"2021-06-08T18:25:57","guid":{"rendered":"https:\/\/devblogs.microsoft.com\/dotnet\/?p=33235"},"modified":"2021-06-09T07:17:03","modified_gmt":"2021-06-09T14:17:03","slug":"net-framework-june-2021-security-and-quality-rollup-updates","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/dotnet\/net-framework-june-2021-security-and-quality-rollup-updates\/","title":{"rendered":".NET Framework June 2021 Security and Quality Rollup Updates"},"content":{"rendered":"<p>Today, we are releasing the June 2021 Security and Quality Rollup Updates for .NET Framework.<\/p>\n<h3>Security<\/h3>\n<p>The June Security and Quality Rollup Update does not contain any new security fixes. See <a href=\"https:\/\/devblogs.microsoft.com\/dotnet\/net-framework-february-security-and-quality-rollup\/\" rel=\"nofollow\">February 2021 Security and Quality Rollup<\/a> for the latest security updates.<\/p>\n<h3>Quality and Reliability<\/h3>\n<p>This release contains the following quality and reliability improvements.<\/p>\n<h5>CLR<span style=\"font-size: 12pt;\"><sup>1<\/sup><\/span><\/h5>\n<ul>\n<li>Addresses a performance issue caused by incorrect configuration in the GC.<\/li>\n<li>Addresses an issue where a background GC could pause the runtime for a long period of time if a large managed heap is filled with long lived objects with a deep chain of references.<\/li>\n<li>Addresses an issue where crashes could occur if security stackwalks were generated during ThreadAbortException handling.<\/li>\n<\/ul>\n<h5>NCL<span style=\"font-size: 12pt;\"><sup>2<\/sup><\/span><\/h5>\n<ul>\n<li>.NET Framework 4.8 will now allow to negotiate TLS 1.3 if underlying OS supports it.<\/li>\n<\/ul>\n<h5>WPF<span style=\"font-size: 12pt;\"><sup>3<\/sup><\/span><\/h5>\n<ul>\n<li>Addresses an issue when rapid typing using an IME can crash via FailFast.<\/li>\n<li>Addresses an issue where Thaana characters displayed in left-to-right order.<\/li>\n<li>Addresses a crash when WebBrowser receives a completion event for a navigation it tried to cancel.<\/li>\n<\/ul>\n<p><\/br><sup>1 <\/sup>Common Language Runtime (CLR)\n<\/br><sup>2 <\/sup>Network Class Library (NCL)\n<\/br><sup>3 <\/sup>Windows Presentation Foundation (WPF)<\/p>\n<h3><a id=\"user-content-getting-the-update\" class=\"anchor\" href=\"#getting-the-update\"><\/a>Getting the Update<\/h3>\n<p>The Security and Quality Rollup is available via Windows Update, Windows Server Update Services, and Microsoft Update Catalog.<\/p>\n<h5><a id=\"user-content-microsoft-update-catalog\" class=\"anchor\" href=\"#microsoft-update-catalog\"><\/a>Microsoft Update Catalog<\/h5>\n<p>You can get the update via the Microsoft Update Catalog.<\/p>\n<p>**Note**: Customers that rely on Windows Update and Windows Server Update Services will automatically receive the .NET Framework version-specific updates. Advanced system administrators can also take use of the below direct Microsoft Update Catalog download links to .NET Framework-specific updates. Before applying these updates, please ensure that you carefully review the .NET Framework version applicability, to ensure that you only install updates on systems where they apply.<\/p>\n<p>The following table is for Windows 10 and Windows Server 2016+ versions.<\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"8px\">\n<thead>\n<tr>\n<th>Product Version<\/th>\n<th colspan=\"2\">Cumulative Update<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr bgcolor=\"#F0F0F0\">\n<td><strong>Windows 10 version 21H1<\/strong><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 3.5, 4.8<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003254\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003254\" rel=\"nofollow\">5003254<\/a><\/td>\n<\/tr>\n<tr bgcolor=\"#F0F0F0\">\n<td><strong>Windows 10, version 20H2 and Windows Server, version 20H2<\/strong><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 3.5, 4.8<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003254\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003254\" rel=\"nofollow\">5003254<\/a><\/td>\n<\/tr>\n<tr bgcolor=\"#F0F0F0\">\n<td><strong>Windows 10 version 2004 and Windows Server, version 2004<\/strong><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 3.5, 4.8<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003254\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003254\" rel=\"nofollow\">5003254<\/a><\/td>\n<\/tr>\n<tr bgcolor=\"#F0F0F0\">\n<td><strong>Windows 10 version 1909<\/strong><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 3.5, 4.8<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003256\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003256\" rel=\"nofollow\">5003256<\/a><\/td>\n<\/tr>\n<tr bgcolor=\"#F0F0F0\">\n<td><strong>Windows 10 version 1809 (October 2018 Update) and Windows Server 2019<\/strong><\/td>\n<td><\/td>\n<td><strong><a href=\"https:\/\/support.microsoft.com\/kb\/5003778\" rel=\"nofollow\">5003778<\/a><\/strong><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 3.5, 4.7.2<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003258\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003258\" rel=\"nofollow\">5003258<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 3.5, 4.8<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003255\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003255\" rel=\"nofollow\">5003255<\/a><\/td>\n<\/tr>\n<tr bgcolor=\"#F0F0F0\">\n<td><strong>Windows 10 version 1607 (Anniversary Update) and Windows Server 2016<\/strong><\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003638\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003638\" rel=\"nofollow\">5003638<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 4.8<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003542\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003542\" rel=\"nofollow\">5003542<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The following table is for earlier Windows and Windows Server versions.<\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"8px\">\n<thead>\n<tr>\n<th>Product Version<\/th>\n<th colspan=\"2\">Security and Quality Rollup<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr bgcolor=\"#F0F0F0\">\n<td><strong>Windows 8.1, Windows RT 8.1 and Windows Server 2012 R2<\/strong><\/td>\n<td><\/td>\n<td><strong><a href=\"https:\/\/support.microsoft.com\/kb\/5003781\" rel=\"nofollow\">5003781<\/a><\/strong><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 3.5<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=4578953\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/4578953\" rel=\"nofollow\">4578953<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 4.5.2<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=4578956\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/4578956\" rel=\"nofollow\">4578956<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003549\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003549\" rel=\"nofollow\">5003549<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 4.8<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003545\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003545\" rel=\"nofollow\">5003545<\/a><\/td>\n<\/tr>\n<tr bgcolor=\"#F0F0F0\">\n<td><strong>Windows Server 2012<\/strong><\/td>\n<td><\/td>\n<td><strong><a href=\"https:\/\/support.microsoft.com\/kb\/5003780\" rel=\"nofollow\">5003780<\/a><\/strong><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 3.5<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=4578950\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/4578950\" rel=\"nofollow\">4578950<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 4.5.2<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=4578954\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/4578954\" rel=\"nofollow\">4578954<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003548\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003548\" rel=\"nofollow\">5003548<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 4.8<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003544\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003544\" rel=\"nofollow\">5003544<\/a><\/td>\n<\/tr>\n<tr bgcolor=\"#F0F0F0\">\n<td><strong>Windows 7 SP1 and Windows Server 2008 R2 SP1<\/strong><\/td>\n<td><\/td>\n<td><strong><a href=\"https:\/\/support.microsoft.com\/kb\/5003779\" rel=\"nofollow\">5003779<\/a><\/strong><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 3.5.1<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=4578952\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/4578952\" rel=\"nofollow\">4578952<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 4.5.2<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=4578955\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/4578955\" rel=\"nofollow\">4578955<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003547\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003547\" rel=\"nofollow\">5003547<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 4.8<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003543\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003543\" rel=\"nofollow\">5003543<\/a><\/td>\n<\/tr>\n<tr bgcolor=\"#F0F0F0\">\n<td><strong>Windows Server 2008<\/strong><\/td>\n<td><\/td>\n<td><strong><a href=\"https:\/\/support.microsoft.com\/kb\/5003782\" rel=\"nofollow\">5003782<\/a><\/strong><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 2.0, 3.0<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=4578951\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/4578951\" rel=\"nofollow\">4578951<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 4.5.2<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=4578955\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/4578955\" rel=\"nofollow\">4578955<\/a><\/td>\n<\/tr>\n<tr>\n<td>.NET Framework 4.6<\/td>\n<td><a href=\"http:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=5003547\" rel=\"nofollow\">Catalog<\/a><\/td>\n<td><a href=\"https:\/\/support.microsoft.com\/kb\/5003547\" rel=\"nofollow\">5003547<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<h5>Previous Monthly Rollups<\/h5>\n<p>The last few .NET Framework Monthly updates are listed below for your convenience:<\/p>\n<ul>\n<li><a href=\"https:\/\/devblogs.microsoft.com\/dotnet\/net-framework-may-2021-cumulative-update-preview\/\" rel=\"nofollow\">.NET Framework May 2021 Cumulative Update Preview<\/a><\/li>\n<li><a href=\"https:\/\/devblogs.microsoft.com\/dotnet\/net-framework-may-2021-security-and-quality-rollup-updates\/\" rel=\"nofollow\">.NET Framework May 2021 Security and Quality Rollup Updates<\/a><\/li>\n<li><a href=\"https:\/\/devblogs.microsoft.com\/dotnet\/net-framework-february-2021-cumulative-update-preview-for-windows-10-2004-windows-server-version-2004-windows-10-version-20h2-and-windows-server-version-20h2\/\" rel=\"nofollow\">.NET Framework February 2021 Cumulative Update Preview for Windows 10 2004, Windows Server, version 2004, Windows 10, version 20H2 and Windows Server, version 20H2<\/a><\/li>\n<li><a href=\"https:\/\/devblogs.microsoft.com\/dotnet\/net-framework-february-2021-cumulative-update-preview-for-net-framework\/\" rel=\"nofollow\">.NET Framework February 2021 Cumulative Update Preview for .NET Framework.<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Today, we are releasing the June 2021 Security and Quality Rollup Updates for .NET Framework. Security The June Security and Quality Rollup Update does not contain any new security fixes. See February 2021 Security and Quality Rollup for the latest security updates. Quality and Reliability This release contains the following quality and reliability improvements. CLR1 [&hellip;]<\/p>\n","protected":false},"author":369,"featured_media":58792,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[195,509],"tags":[],"class_list":["post-33235","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dotnet-framework","category-wpf"],"acf":[],"blog_post_summary":"<p>Today, we are releasing the June 2021 Security and Quality Rollup Updates for .NET Framework. Security The June Security and Quality Rollup Update does not contain any new security fixes. See February 2021 Security and Quality Rollup for the latest security updates. Quality and Reliability This release contains the following quality and reliability improvements. CLR1 [&hellip;]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/posts\/33235","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\/369"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/comments?post=33235"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/posts\/33235\/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=33235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/categories?post=33235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/dotnet\/wp-json\/wp\/v2\/tags?post=33235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}