{"id":135775,"date":"2026-09-09T10:19:47","date_gmt":"2026-09-09T01:19:47","guid":{"rendered":"https:\/\/softantenna.com\/blog\/?p=135775"},"modified":"2026-09-09T10:19:47","modified_gmt":"2026-09-09T01:19:47","slug":"windows-10-version-22h2-21h2-kb5122878-monthly","status":"publish","type":"post","link":"https:\/\/softantenna.com\/blog\/windows-10-version-22h2-21h2-kb5122878-monthly\/","title":{"rendered":"Windows 10\u306e\u6708\u4f8b\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0KB5122878\u304c\u516c\u958b - 2026\u5e749\u6708\u306e\u6708\u4f8b\u66f4\u65b0"},"content":{"rendered":"<p><img decoding=\"async\" style=\"display:block; margin-left:auto; margin-right:auto;\" src=\"https:\/\/softantenna.com\/blog\/wp-content\/uploads\/2017\/09\/Iwindows-10-logo.jpg\" alt=\"Windows 10 logo\" title=\"windows-10-logo.jpg\" border=\"0\" width=\"1358\" height=\"740\" \/><\/p>\n<p>Microsoft\u306f\u672c\u65e5\u3001\u6bce\u6708\u7c73\u56fd\u6642\u9593\u306e\u7b2c2\u706b\u66dc\u65e5\u306b\u63d0\u4f9b\u3057\u3066\u3044\u308b\u6708\u4f8b\u66f4\u65b0\u306e\u4e00\u74b0\u3068\u3057\u3066\u3001Windows 10\u306e\u5404\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u5bfe\u3059\u308b\u7d2f\u7a4d\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u305d\u308c\u305e\u308c\u516c\u958b\u3057\u307e\u3057\u305f\u3002<\/p>\n<ul>\n<li>Windows 10 Version 20H2\/21H1\/21H2\/22H2: <a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-10\/2026\/09\/kb5122878-windows-10-21h2-22h2-security-update\">KB5122878<\/a><\/li>\n<li>Windows 10 Version 1909: <a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/end-of-service-statement-e440a698-de79-4ace-b53b-5a6a3e36685e\">EOS<\/a><\/li>\n<li>Windows 10 Version 1903: <a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/end-of-service-statement-e440a698-de79-4ace-b53b-5a6a3e36685e\">EOS<\/a><\/li>\n<li>Windows 10 Version 1809: <a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-10\/2026\/09\/kb5122876-windows-10-1809-security-update\">KB5122876<\/a><\/li>\n<li>Windows 10 version 1803: <a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/end-of-service-statement-e440a698-de79-4ace-b53b-5a6a3e36685e\">EOS<\/a><\/li>\n<li>Windows 10 version 1709: <a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/end-of-service-statement-e440a698-de79-4ace-b53b-5a6a3e36685e\">EOS<\/a><\/li>\n<li>Windows 10 version 1703: <a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/end-of-service-statement-e440a698-de79-4ace-b53b-5a6a3e36685e\">EOS<\/a><\/li>\n<li>Windows 10 version 1607: <a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-10\/2026\/09\/kb5123099-windows-10-1607-security-update\">KB5123099<\/a><\/li>\n<li>Windows 10 Version 1511: <a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/end-of-service-statement-e440a698-de79-4ace-b53b-5a6a3e36685e\">EOS<\/a><\/li>\n<li>Windows 10 Version 1507: <a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/end-of-service-statement-e440a698-de79-4ace-b53b-5a6a3e36685e\">EOS<\/a><\/li>\n<\/ul>\n<p>\u305d\u308c\u305e\u308cWindows Update\u307e\u305f\u306fMicrosoft Update Catalog\u3092\u5229\u7528\u3057\u3066\u5c0e\u5165\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3001\u5909\u66f4\u70b9\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059(\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306e\u5185\u5bb9\u306f<a href=\"https:\/\/www.microsoft.com\/en-us\/msrc\/blog\/category?cat=Japan%20Security%20Team\">\u65e5\u672cMicrosoft\u306e\u30d6\u30ed\u30b0<\/a>\u3067\u53c2\u7167\u3067\u304d\u307e\u3059)\u3002<\/p>\n<h2>September 8, 2026\u2014KB5122878 (OS Builds 19045.7725 and 19044.7725)<\/h2>\n<p>Windows 10 Version 22H2\/21H2\u7528\u306e\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0<a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-10\/2026\/09\/kb5122878-windows-10-21h2-22h2-security-update\">KB5122878<\/a>\u3067\u306f\u30018\u670811\u65e5\u306b\u516c\u958b\u3055\u308c\u305f<a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-10\/2026\/08\/kb5120249-windows-10-21h2-22h2-security-update\">KB5120249<\/a>\u306e\u5185\u5bb9\u306b\u52a0\u3048\u3001\u30bb\u30ad\u30e5\u30a2\u30d6\u30fc\u30c8\u8a3c\u660e\u66f8\u3092\u81ea\u52d5\u914d\u5e03\u3059\u308b\u305f\u3081\u306e\u30c7\u30d0\u30a4\u30b9\u5224\u5b9a\u30c7\u30fc\u30bf\u306e\u5f37\u5316\u3084\u3001\u30e2\u30ed\u30c3\u30b3\u306e\u6a19\u6e96\u6642\u306e\u8abf\u6574\u3001\u30ea\u30e2\u30fc\u30c8\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u306e\u7279\u5b9a\u69cb\u6210\u3067\u767a\u751f\u3057\u3066\u3044\u305f\u3001\u30ed\u30fc\u30ab\u30eb\u3067\u30ea\u30e2\u30fc\u30c8\u97f3\u58f0\u304c\u518d\u751f\u3055\u308c\u306a\u3044\u554f\u984c\u306e\u4fee\u6b63\u306a\u3069\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u30ea\u30ea\u30fc\u30b9\u30ce\u30fc\u30c8\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<h3>\u6539\u826f\u3068\u4fee\u6b63<\/h3>\n<blockquote>\n<ul>\n<li>\n<p><strong>[Secure Boot]<\/strong> This update includes additional high confidence device targeting data, increasing coverage of devices eligible to automatically receive new <a href=\"https:\/\/support.microsoft.com\/en-us\/topic\/windows-devices-for-home-users-businesses-and-schools-with-microsoft-managed-updates-29bfd847-5855-49f1-bb94-e18497fe2315\">Secure Boot certificates<\/a>. Certificate deployment via Windows updates continues across supported PCs and non-managed business devices in the coming months.<\/p>\n<\/li>\n<li>\n<p><strong>[Date and Time]<\/strong> This update adjusts Morocco Standard Time to reflect Morocco's transition to permanent UTC+00:00 effective September 20, 2026. This change ensures that the correct local time is displayed after the transition.<\/p>\n<\/li>\n<li>\n<p><strong>[OMA DM protocol]<\/strong> This update improves the logging features of the OMA DM Client (omadmclient.exe) component. More debug information is now saved when connecting to a server.<\/p>\n<\/li>\n<li>\n<p><strong>[Windows Code Integrity policies]<\/strong> Improves application compatibility during Windows certificate-authority rotation by recognizing Microsoft Windows Production PCA 2026 RSA2048-SHA256 as equivalent to PCA 2011.<\/p>\n<\/li>\n<li>\n<p><strong>[Remote Desktop]<\/strong> This update addresses an issue that affects Remote Desktop audio redirection. Audio from the remote session might not play on the local computer in certain configurations.<\/p>\n<\/li>\n<li>\n<p><strong>[BitLocker Group Policy]<\/strong> This update addresses the \"Devices with an unrecommended BitLocker Group Policy configuration might be required to enter their BitLocker recovery key\" known issue.<\/p>\n<\/li>\n<\/ul>\n<\/blockquote>\n<h3>\u65e2\u77e5\u306e\u4e0d\u5177\u5408<\/h3>\n<p>\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u306f\u65e2\u77e5\u306e\u4e0d\u5177\u5408\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\u3002<\/p>\n<p>\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306fWindows Update\u306e\u4ed6\u3001<a href=\"https:\/\/www.catalog.update.microsoft.com\/Search.aspx?q=KB5122878\">Microsoft Update Catalog<\/a>\u3001Windows Server Update Services(WSUS)\u3092\u5229\u7528\u3057\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Microsoft\u306f\u672c\u65e5\u3001\u6bce\u6708\u7c73\u56fd\u6642\u9593\u306e\u7b2c2\u706b\u66dc\u65e5\u306b\u63d0\u4f9b\u3057\u3066\u3044\u308b\u6708\u4f8b\u66f4\u65b0\u306e\u4e00\u74b0\u3068\u3057\u3066\u3001Windows 10\u306e\u5404\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u5bfe\u3059\u308b\u7d2f\u7a4d\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u305d\u308c\u305e\u308c\u516c\u958b\u3057\u307e\u3057\u305f\u3002 Windows 10 Version 20H2\/2 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":53492,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[3],"tags":[4315,3298,2701],"class_list":["post-135775","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows","tag-kb","tag-windows","tag-windows10"],"_links":{"self":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/135775","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/comments?post=135775"}],"version-history":[{"count":0,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/135775\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media\/53492"}],"wp:attachment":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media?parent=135775"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/categories?post=135775"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/tags?post=135775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}