{"id":13615,"date":"2025-11-04T10:02:36","date_gmt":"2025-11-04T01:02:36","guid":{"rendered":"https:\/\/m365jp.net\/?p=13615"},"modified":"2025-11-04T10:06:24","modified_gmt":"2025-11-04T01:06:24","slug":"mc1182696-microsoft-defender-application-guard-for-office-is-being-removed","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-11-04-mc1182696-microsoft-defender-application-guard-for-office-is-being-removed","title":{"rendered":"MC1182696 | Microsoft Defender: Application Guard for Office is being removed"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">MC1182696 | Microsoft Defender: Application Guard for Office is being removed<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<table id=\"data\">\n<tbody>\n<tr>\n<th>Classification<\/th>\n<td>planForChange<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>11\/04\/2025 00:41:10<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>11\/04\/2025 00:40:23<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td>08\/31\/2027 07:00:00<\/td>\n<\/tr>\n<tr>\n<th>Message Content<\/th>\n<td>\n<p><a href=\"https:\/\/learn.microsoft.com\/defender-office-365\/app-guard-for-office-install\" target=\"_blank\">Microsoft Defender Application Guard for Office<\/a> was retired in April 2024 and is now being removed from Office. This change aligns with the end of   support for Windows 11 version 23H2 and helps streamline the security experience for users. Documents that previously opened in  <i>Application Guard <\/i>will now open in <i><a href=\"https:\/\/support.microsoft.com\/office\/what-is-protected-view-d6f09ac7-e6b9-4495-8e43-2bbcdbcb6653\" target=\"_blank\">Protected View<\/a><\/i>, maintaining strong protection against threats.<\/p>\n<p>  <b>When this will happen:<\/b>  <\/p>\n<p><b>Phase 1:<\/b> Removal begins with Office version 2602<\/p>\n<p>  <\/p>\n<ul>  <\/p>\n<li>Current Channel: early February 2026<\/li>\n<p>  <\/p>\n<li>Monthly Enterprise Channel: April 2026<\/li>\n<p>  <\/p>\n<li>Semi-Annual Enterprise Channel: July 2026<\/li>\n<p>  <\/ul>\n<p>  <\/p>\n<p><b>Phase 2:<\/b> Full removal with Office version 2612<\/p>\n<p>  <\/p>\n<ul>  <\/p>\n<li>Current Channel: early December 2026<\/li>\n<p>  <\/p>\n<li>Monthly Enterprise Channel: February 2027<\/li>\n<p>  <\/p>\n<li>Semi-Annual Enterprise Channel: July 2027<\/li>\n<p>  <\/ul>\n<p>  <b>How this affects your organization:<\/b>  <\/p>\n<p>  <\/p>\n<p><b>Who is affected:<\/b> All Win32 users who previously used Microsoft Defender Application Guard for Office.<\/p>\n<p>  <\/p>\n<p><b>What will happen:<\/b><\/p>\n<p>  <\/p>\n<ul>  <\/p>\n<li>Files that previously opened in<i> Application Guard<\/i> will now open in <i>  Protected View<\/i>.<\/li>\n<p>  <\/p>\n<li>Application Guard for Office will be disabled in Phase 1; support exceptions may be available until Phase 2.<\/li>\n<p>  <\/p>\n<li>Application Guard for Office will be fully removed in Phase 2 with no workaround.<\/li>\n<p>  <\/p>\n<li>Admins are encouraged to enable Microsoft Defender for Endpoint <a href=\"https:\/\/learn.microsoft.com\/defender-endpoint\/overview-attack-surface-reduction\" target=\"_blank\">  Attack Surface Reduction (ASR)<\/a> rules and <a href=\"https:\/\/learn.microsoft.com\/windows\/security\/application-security\/application-control\/windows-defender-application-control\/wdac\" target=\"_blank\">  Windows Defender Application Control (WDAC)<\/a>.<\/li>\n<p>  <\/ul>\n<p>  <b>What you can do to prepare:<\/b>  <\/p>\n<p>No admin action is required for the removal itself. However, to maintain strong protection, we recommend:<\/p>\n<p>  <\/p>\n<ul>  <\/p>\n<li>Enable Microsoft Defender for Endpoint <a href=\"https:\/\/learn.microsoft.com\/defender-endpoint\/overview-attack-surface-reduction\" target=\"_blank\">  ASR<\/a> rules to block risky behaviors in Office files.<\/li>\n<p>  <\/p>\n<li>Enable <a href=\"https:\/\/learn.microsoft.com\/windows\/security\/application-security\/application-control\/windows-defender-application-control\/wdac\" target=\"_blank\">  Windows Defender Application Control (WDAC)<\/a> to ensure only trusted, signed code runs on devices.<\/li>\n<p>  <\/p>\n<li>Review internal documentation and helpdesk guidance if your organization previously relied on Application Guard for Office.<\/li>\n<p>  <\/ul>\n<p>  <\/p>\n<p>For instructions on verifying if users are using Application Guard for Office, refer to&nbsp;<a href=\"https:\/\/learn.microsoft.com\/defender-office-365\/app-guard-for-office-install#confirm-that-application-guard-for-office-is-enabled-and-working\" target=\"_blank\">Confirm   that Application Guard for Office is enabled and working &#8211; Application Guard for Office for admins | Microsoft Learn<\/a>.<\/p>\n<p>  <b>Compliance considerations:<\/b>  <\/p>\n<p>No compliance considerations identified, review as appropriate for your organization.<\/p>\n<\/p>\n<\/td>\n<\/tr>\n<tr>\n<th>Machine Translation<\/th>\n<td>\n<p><a href=\"https:\/\/learn.microsoft.com\/defender-office-365\/app-guard-for-office-install\" target=\"_blank\">Microsoft Defender Application Guard for Office<\/a> \u306f 2024 \u5e74 4 \u6708\u306b\u5ec3\u6b62\u3055\u308c\u3001\u73fe\u5728\u306f Office \u304b\u3089\u524a\u9664\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u5909\u66f4\u306f\u3001Windows 11 \u30d0\u30fc\u30b8\u30e7\u30f3 23H2 \u306e\u30b5\u30dd\u30fc\u30c8\u7d42\u4e86\u306b\u5408\u308f\u305b\u3066\u884c\u308f\u308c\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u5408\u7406\u5316\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u4ee5\u524d\u306b  <i>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3 \u30ac\u30fc\u30c9 <\/i>\u3067\u958b\u3044\u3066\u3044\u305f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306f\u3001 <i><a href=\"https:\/\/support.microsoft.com\/office\/what-is-protected-view-d6f09ac7-e6b9-4495-8e43-2bbcdbcb6653\" target=\"_blank\">\u4fdd\u8b77\u30d3\u30e5\u30fc<\/a><\/i>\u3067\u958b\u304d\u3001\u8105\u5a01\u306b\u5bfe\u3059\u308b\u5f37\u529b\u306a\u4fdd\u8b77\u304c\u7dad\u6301\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>  <b>\u3053\u308c\u304c\u3044\u3064\u8d77\u3053\u308b\u304b:<\/b>  <\/p>\n<p><b>\u30d5\u30a7\u30fc\u30ba 1:<\/b> \u524a\u9664\u306f Office \u30d0\u30fc\u30b8\u30e7\u30f3 2602 \u304b\u3089\u958b\u59cb\u3055\u308c\u307e\u3059<\/p>\n<p>  <\/p>\n<ul>  <\/p>\n<li>\u73fe\u5728\u306e\u30c1\u30e3\u30f3\u30cd\u30eb: 2026 \u5e74 2 \u6708\u4e0a\u65ec<\/li>\n<p>  <\/p>\n<li>\u6708\u9593\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba \u30c1\u30e3\u30cd\u30eb: 2026 \u5e74 4 \u6708<\/li>\n<p>  <\/p>\n<li>\u534a\u671f\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba \u30c1\u30e3\u30cd\u30eb: 2026 \u5e74 7 \u6708<\/li>\n<p>  <\/ul>\n<p>  <\/p>\n<p><b>\u30d5\u30a7\u30fc\u30ba2:<\/b> Office \u30d0\u30fc\u30b8\u30e7\u30f3 2612 \u3067\u5b8c\u5168\u306b\u524a\u9664<\/p>\n<p>  <\/p>\n<ul>  <\/p>\n<li>\u73fe\u5728\u306e\u30c1\u30e3\u30f3\u30cd\u30eb: 2026 \u5e74 12 \u6708\u4e0a\u65ec<\/li>\n<p>  <\/p>\n<li>\u6708\u9593\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba \u30c1\u30e3\u30cd\u30eb: 2027 \u5e74 2 \u6708<\/li>\n<p>  <\/p>\n<li>\u534a\u671f\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba \u30c1\u30e3\u30cd\u30eb: 2027 \u5e74 7 \u6708<\/li>\n<p>  <\/ul>\n<p>  <b>\u3053\u308c\u304c\u7d44\u7e54\u306b\u4e0e\u3048\u308b\u5f71\u97ff:<\/b>  <\/p>\n<p>  <\/p>\n<p><b>\u5f71\u97ff\u3092\u53d7\u3051\u308b\u4eba:<\/b> \u4ee5\u524d\u306bMicrosoft Defender Application Guard for Office\u3092\u4f7f\u7528\u3057\u305f\u3059\u3079\u3066\u306eWin32\u30e6\u30fc\u30b6\u30fc\u3002<\/p>\n<p>  <\/p>\n<p><b>\u4f55\u304c\u8d77\u3053\u308b\u304b:<\/b><\/p>\n<p>  <\/p>\n<ul>  <\/p>\n<li>\u4ee5\u524d\u306b<i> \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3 \u30ac\u30fc\u30c9<\/i> \u3067\u958b\u3044\u305f\u30d5\u30a1\u30a4\u30eb\u306f\u3001 <i>\u4fdd\u8b77\u30d3\u30e5\u30fc<\/i>\u3067\u958b\u304f\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/li>\n<p>  <\/p>\n<li>Application Guard for Office \u306f\u30d5\u30a7\u30fc\u30ba 1 \u3067\u7121\u52b9\u306b\u306a\u308a\u307e\u3059\u3002\u30b5\u30dd\u30fc\u30c8\u306e\u4f8b\u5916\u306f\u3001\u30d5\u30a7\u30fc\u30ba 2 \u307e\u3067\u5229\u7528\u3067\u304d\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<p>  <\/p>\n<li>Application Guard for Office \u306f\u3001\u56de\u907f\u7b56\u306a\u3057\u3067\u30d5\u30a7\u30fc\u30ba 2 \u3067\u5b8c\u5168\u306b\u524a\u9664\u3055\u308c\u307e\u3059\u3002<\/li>\n<p>  <\/p>\n<li>\u7ba1\u7406\u8005\u306f\u3001Microsoft Defender for Endpoint <a href=\"https:\/\/learn.microsoft.com\/defender-endpoint\/overview-attack-surface-reduction\" target=\"_blank\">  \u653b\u6483\u9762\u306e\u7e2e\u5c0f (ASR)<\/a> \u30eb\u30fc\u30eb\u3068 <a href=\"https:\/\/learn.microsoft.com\/windows\/security\/application-security\/application-control\/windows-defender-application-control\/wdac\" target=\"_blank\">  Windows Defender \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5236\u5fa1 (WDAC)<\/a> \u3092\u6709\u52b9\u306b\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/li>\n<p>  <\/ul>\n<p>  <b>\u6e96\u5099\u3059\u308b\u305f\u3081\u306b\u3067\u304d\u308b\u3053\u3068:<\/b>  <\/p>\n<p>\u524a\u9664\u81ea\u4f53\u306b\u7ba1\u7406\u8005\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u3002\u305f\u3060\u3057\u3001\u5f37\u529b\u306a\u4fdd\u8b77\u3092\u7dad\u6301\u3059\u308b\u306b\u306f\u3001\u6b21\u306e\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n<p>  <\/p>\n<ul>  <\/p>\n<li>Microsoft Defender for Endpoint <a href=\"https:\/\/learn.microsoft.com\/defender-endpoint\/overview-attack-surface-reduction\" target=\"_blank\">  ASR<\/a> \u30eb\u30fc\u30eb\u3092\u6709\u52b9\u306b\u3057\u3066\u3001Office \u30d5\u30a1\u30a4\u30eb\u5185\u306e\u5371\u967a\u306a\u52d5\u4f5c\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002<\/li>\n<p>  <\/p>\n<li><a href=\"https:\/\/learn.microsoft.com\/windows\/security\/application-security\/application-control\/windows-defender-application-control\/wdac\" target=\"_blank\">Windows Defender \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5236\u5fa1 (WDAC)<\/a> \u3092\u6709\u52b9\u306b\u3057\u3066\u3001\u4fe1\u983c\u3055\u308c\u305f\u7f72\u540d\u4ed8\u304d\u30b3\u30fc\u30c9\u306e\u307f\u304c\u30c7\u30d0\u30a4\u30b9\u3067\u5b9f\u884c\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n<p>  <\/p>\n<li>\u7d44\u7e54\u304c\u4ee5\u524d\u306b Application Guard for Office \u306b\u4f9d\u5b58\u3057\u3066\u3044\u305f\u5834\u5408\u306f\u3001\u5185\u90e8\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3068\u30d8\u30eb\u30d7\u30c7\u30b9\u30af \u30ac\u30a4\u30c0\u30f3\u30b9\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/li>\n<p>  <\/ul>\n<p>  <\/p>\n<p>\u30e6\u30fc\u30b6\u30fc\u304c Application Guard for Office \u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u624b\u9806\u306b\u3064\u3044\u3066\u306f\u3001\u300c&nbsp;<a href=\"https:\/\/learn.microsoft.com\/defender-office-365\/app-guard-for-office-install#confirm-that-application-guard-for-office-is-enabled-and-working\" target=\"_blank\">Application Guard for Office   \u304c\u6709\u52b9\u3067\u52d5\u4f5c\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b &#8211; \u7ba1\u7406\u8005\u5411\u3051 Application Guard for Office |Microsoft Learn<\/a>\u3002<\/p>\n<p>  <b>\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u306b\u95a2\u3059\u308b\u8003\u616e\u4e8b\u9805:<\/b>  <\/p>\n<p>\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u306b\u95a2\u3059\u308b\u8003\u616e\u4e8b\u9805\u304c\u7279\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u3001\u7d44\u7e54\u306b\u5fdc\u3058\u3066\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>MC1182696 | Microsoft Defender: Application Guard for Office is being removed Classification planForChange Las [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-13615","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/13615","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/comments?post=13615"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/13615\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=13615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=13615"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=13615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}