{"id":13325,"date":"2025-10-15T03:01:33","date_gmt":"2025-10-14T18:01:33","guid":{"rendered":"https:\/\/m365jp.net\/?p=13325"},"modified":"2025-10-15T03:02:51","modified_gmt":"2025-10-14T18:02:51","slug":"mc1172445-the-october-2025-windows-security-update-is-now-available","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-10-15-mc1172445-the-october-2025-windows-security-update-is-now-available","title":{"rendered":"MC1172445 | The October 2025 Windows security update is now available"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">MC1172445 | The October 2025 Windows security update is now available<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<table id=\"data\">\n<tbody>\n<tr>\n<th>Classification<\/th>\n<td>stayInformed<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>10\/14\/2025 17:02:04<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>10\/14\/2025 17:02:03<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td>10\/14\/2026 17:02:03<\/td>\n<\/tr>\n<tr>\n<th>Message Content<\/th>\n<td>\n<div>The October 2025 security update is now available for all supported versions of Windows. We recommend that you install these updates promptly. For more information about the contents of this update, see the release notes, which are easily accessible from   the&nbsp;<a href=\"https:\/\/support.microsoft.com\/help\/5066835\" rel=\"noopener noreferrer\" target=\"_blank\">Windows 11<\/a> and&nbsp;<a href=\"https:\/\/support.microsoft.com\/help\/5066791\" rel=\"noopener noreferrer\" target=\"_blank\">Windows 10<\/a>&nbsp;update history pages. To learn   more about the different types of monthly quality updates, see <a href=\"https:\/\/aka.ms\/Windows\/MonthlyUpdates\" rel=\"noopener noreferrer\" target=\"_blank\">  Windows monthly updates explained<\/a>.<\/div>\n<div>&nbsp;&nbsp;<\/div>\n<div><b>Highlights for the Windows 11, version 25H2 update:&nbsp;<\/b><\/div>\n<ul>\n<li>This security update includes improvements that were a part of update&nbsp;<a href=\"https:\/\/support.microsoft.com\/help\/5065789\" rel=\"noopener noreferrer\" target=\"_blank\">KB5065789<\/a> (released September 29, 2025).<\/li>\n<li>This update addresses security issues for your Windows operating system.&nbsp;<\/li>\n<li>This update addresses an issue that caused the print preview screen to stop responding in Chromium-based browsers.<\/li>\n<li>This update addresses an issue that occurred when users signed in to a Windows device using only a Gamepad at the lock screen. If no other input methods\u2014such as touch or fingerprint\u2014were used during sign-in, apps and games did not respond to input afterward.   \u200b\u200b\u200b\u200b\u200b\u200b\u200b<\/li>\n<li>This update addresses an issue that affects the setup process for Windows Hello face recognition when using USB infrared camera modules. Users were unable to complete setup due to a persistent error message, such as &#8220;Make sure your face is centered in the   frame.&#8221; \u200b\u200b\u200b\u200b\u200b\u200b\u200b<\/li>\n<\/ul>\n<div>  <\/div>\n<div>Short on time? Watch our<b> <\/b><a href=\"https:\/\/aka.ms\/Windows11\/ReleaseNotesVideo\/2510\" rel=\"noopener noreferrer\" target=\"_blank\">Windows 11 release notes video<\/a> for this month&#8217;s tips.<\/div>\n<div>  <\/div>\n<div>For instructions on how to install this update, see the KB for your operating system listed below:&nbsp;<\/div>\n<ul>\n<li>Windows 11, versions 25H2 and 24H2: <a href=\"https:\/\/support.microsoft.com\/help\/5066835\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066835<\/a><\/li>\n<li>Windows 11, versions 23H2 and 22H2: <a href=\"https:\/\/support.microsoft.com\/help\/5066793\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066793<\/a><\/li>\n<li>Windows 11 Enterprise LTSC 2024: Hotpatch <a href=\"https:\/\/support.microsoft.com\/topic\/0a8c23de-276c-4396-a6e8-beb5c4a2ec26\" rel=\"noopener noreferrer\" target=\"_blank\">  Baseline<\/a><\/li>\n<li>Windows 10, versions 22H2 and 21H2: <a href=\"https:\/\/support.microsoft.com\/help\/5066791\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066791<\/a><\/li>\n<li>Windows 10 Enterprise LTSC 2019 and Windows Server 2019: <a href=\"https:\/\/support.microsoft.com\/help\/5066586\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066586<\/a><\/li>\n<li>Windows 10 LTSB 2016 and Windows Server 2016: <a href=\"https:\/\/support.microsoft.com\/help\/5066836\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066836<\/a><\/li>\n<li>Windows 10 LTSB 2015: <a href=\"https:\/\/support.microsoft.com\/help\/5066837\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066837<\/a><\/li>\n<li>Windows Server 2025: <a href=\"https:\/\/support.microsoft.com\/topic\/6cdcc1c3-cfbf-41a3-8f0d-0c4a9d2b7d1e\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066835<\/a><\/li>\n<li>Windows Server 2025 Datacenter: Azure Edition: Hotpatch <a href=\"https:\/\/support.microsoft.com\/topic\/58e80013-ba94-46ad-a56c-b6691d2405ad\" rel=\"noopener noreferrer\" target=\"_blank\">  Baseline<\/a><\/li>\n<li>Windows Server 2022: <a href=\"https:\/\/support.microsoft.com\/help\/5066782\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066782<\/a><\/li>\n<li>Windows Server 2022 Datacenter: Azure Edition: Hotpatch <a href=\"https:\/\/support.microsoft.com\/topic\/235851f3-bc60-4de2-a4b2-88278e1d795d\" rel=\"noopener noreferrer\" target=\"_blank\">  Baseline<\/a><\/li>\n<li>Windows Server 2012 R2: Monthly Rollup: <a href=\"https:\/\/support.microsoft.com\/help\/5066873\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066873<\/a><\/li>\n<li>Windows Server 2012: Monthly Rollup: <a href=\"https:\/\/support.microsoft.com\/help\/5066875\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066875<\/a><\/li>\n<li>Windows Server 2008 R2 Service Pack 1: Monthly Rollup: <a href=\"https:\/\/support.microsoft.com\/help\/5066872\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066872<\/a>&nbsp;\/ Security Only: <a href=\"https:\/\/support.microsoft.com\/help\/5066876\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066876<\/a><\/li>\n<li>Windows Server 2008 SP2: Monthly Rollup: <a href=\"https:\/\/support.microsoft.com\/help\/5066874\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066874<\/a> \/ Security Only: <a href=\"https:\/\/support.microsoft.com\/help\/5066877\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066877<\/a><\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<tr>\n<th>Machine Translation<\/th>\n<td>\n<div>2025 \u5e74 10 \u6708\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u308b\u3059\u3079\u3066\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306e Windows \u3067\u5229\u7528\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u3089\u306e\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u901f\u3084\u304b\u306b\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\u3053\u306e\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u5185\u5bb9\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001<a href=\"https:\/\/support.microsoft.com\/help\/5066835\" rel=\"noopener noreferrer\" target=\"_blank\">Windows 11<\/a> \u304a\u3088\u3073&nbsp;<a href=\"https:\/\/support.microsoft.com\/help\/5066791\" rel=\"noopener noreferrer\" target=\"_blank\">Windows   10<\/a>&nbsp;\u306e\u66f4\u65b0\u5c65\u6b74\u30da\u30fc\u30b8\u304b\u3089&nbsp;\u7c21\u5358\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u30ea\u30ea\u30fc\u30b9 \u30ce\u30fc\u30c8\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u306e\u6708\u6b21\u54c1\u8cea\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u300c <a href=\"https:\/\/aka.ms\/Windows\/MonthlyUpdates\" rel=\"noopener noreferrer\" target=\"_blank\">  Windows \u306e\u6708\u6b21\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8aac\u660e<\/a>\u300d\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/div>\n<div>&nbsp;&nbsp;<\/div>\n<div><b>Windows 11 \u30d0\u30fc\u30b8\u30e7\u30f3 25H2 \u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306e\u30cf\u30a4\u30e9\u30a4\u30c8:&nbsp;<\/b><\/div>\n<ul>\n<li>\u3053\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u306f\u3001\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0&nbsp;<a href=\"https:\/\/support.microsoft.com\/help\/5065789\" rel=\"noopener noreferrer\" target=\"_blank\">KB5065789<\/a> (2025 \u5e74 9 \u6708 29 \u65e5\u30ea\u30ea\u30fc\u30b9) \u306e\u4e00\u90e8\u3067\u3042\u3063\u305f\u6a5f\u80fd\u5f37\u5316\u304c\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<li>\u3053\u306e\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001Windows \u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0 \u30b7\u30b9\u30c6\u30e0\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u554f\u984c\u306b\u5bfe\u51e6\u3057\u307e\u3059\u3002&nbsp;<\/li>\n<li>\u3053\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306f\u3001Chromium \u30d9\u30fc\u30b9\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u3067\u5370\u5237\u30d7\u30ec\u30d3\u30e5\u30fc\u753b\u9762\u304c\u5fdc\u7b54\u3057\u306a\u304f\u306a\u308b\u554f\u984c\u306b\u5bfe\u51e6\u3057\u307e\u3059\u3002<\/li>\n<li>\u3053\u306e\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30ed\u30c3\u30af\u753b\u9762\u3067\u30b2\u30fc\u30e0\u30d1\u30c3\u30c9\u306e\u307f\u3092\u4f7f\u7528\u3057\u3066 Windows \u30c7\u30d0\u30a4\u30b9\u306b\u30b5\u30a4\u30f3\u30a4\u30f3\u3057\u305f\u3068\u304d\u306b\u767a\u751f\u3059\u308b\u554f\u984c\u306b\u5bfe\u51e6\u3057\u307e\u3059\u3002\u30b5\u30a4\u30f3\u30a4\u30f3\u4e2d\u306b\u30bf\u30c3\u30c1\u3084\u6307\u7d0b\u306a\u3069\u306e\u4ed6\u306e\u5165\u529b\u65b9\u6cd5\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u30a2\u30d7\u30ea\u3068\u30b2\u30fc\u30e0\u306f\u305d\u306e\u5f8c\u5165\u529b\u306b\u5fdc\u7b54\u3057\u307e\u305b\u3093\u3067\u3057\u305f\u3002???????<\/li>\n<li>\u3053\u306e\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u3001USB \u8d64\u5916\u7dda\u30ab\u30e1\u30e9 \u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e Windows Hello \u9854\u8a8d\u8b58\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7 \u30d7\u30ed\u30bb\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u554f\u984c\u306b\u5bfe\u51e6\u3057\u307e\u3059\u3002\u300c\u9854\u304c\u30d5\u30ec\u30fc\u30e0\u306e\u4e2d\u592e\u306b\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u300d\u306a\u3069\u306e\u30a8\u30e9\u30fc \u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u7d9a\u304f\u305f\u3081\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3092\u5b8c\u4e86\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f???????<\/li>\n<\/ul>\n<div>  <\/div>\n<div>\u6642\u9593\u304c\u3042\u308a\u307e\u305b\u3093\u304b?\u4eca\u6708\u306e\u30d2\u30f3\u30c8\u306b\u3064\u3044\u3066\u306f\u3001<a href=\"https:\/\/aka.ms\/Windows11\/ReleaseNotesVideo\/2510\" rel=\"noopener noreferrer\" target=\"_blank\">Windows 11 \u30ea\u30ea\u30fc\u30b9 \u30ce\u30fc\u30c8\u306e\u30d3\u30c7\u30aa<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044<b><\/b>\u3002<\/div>\n<div>  <\/div>\n<div>\u3053\u306e\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0 \u30b7\u30b9\u30c6\u30e0\u306e KB \u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002&nbsp;<\/div>\n<ul>\n<li>Windows 11 \u30d0\u30fc\u30b8\u30e7\u30f3 25H2 \u304a\u3088\u3073 24H2: <a href=\"https:\/\/support.microsoft.com\/help\/5066835\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066835<\/a><\/li>\n<li>Windows 11 \u30d0\u30fc\u30b8\u30e7\u30f3 23H2 \u304a\u3088\u3073 22H2: <a href=\"https:\/\/support.microsoft.com\/help\/5066793\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066793<\/a><\/li>\n<li>Windows 11 Enterprise LTSC 2024: \u30db\u30c3\u30c8\u30d1\u30c3\u30c1 <a href=\"https:\/\/support.microsoft.com\/topic\/0a8c23de-276c-4396-a6e8-beb5c4a2ec26\" rel=\"noopener noreferrer\" target=\"_blank\">  \u30d9\u30fc\u30b9\u30e9\u30a4\u30f3<\/a><\/li>\n<li>Windows 10 \u30d0\u30fc\u30b8\u30e7\u30f3 22H2 \u304a\u3088\u3073 21H2: <a href=\"https:\/\/support.microsoft.com\/help\/5066791\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066791<\/a><\/li>\n<li>Windows 10 Enterprise LTSC 2019 \u304a\u3088\u3073 Windows Server 2019: <a href=\"https:\/\/support.microsoft.com\/help\/5066586\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066586<\/a><\/li>\n<li>Windows 10 LTSB 2016 \u304a\u3088\u3073 Windows Server 2016: <a href=\"https:\/\/support.microsoft.com\/help\/5066836\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066836<\/a><\/li>\n<li>Windows 10 LTSB 2015: <a href=\"https:\/\/support.microsoft.com\/help\/5066837\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066837<\/a><\/li>\n<li>Windows Server 2025: <a href=\"https:\/\/support.microsoft.com\/topic\/6cdcc1c3-cfbf-41a3-8f0d-0c4a9d2b7d1e\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066835<\/a><\/li>\n<li>Windows Server 2025 Datacenter: Azure Edition: \u30db\u30c3\u30c8\u30d1\u30c3\u30c1 <a href=\"https:\/\/support.microsoft.com\/topic\/58e80013-ba94-46ad-a56c-b6691d2405ad\" rel=\"noopener noreferrer\" target=\"_blank\">  \u30d9\u30fc\u30b9\u30e9\u30a4\u30f3<\/a><\/li>\n<li>Windows Server 2022: <a href=\"https:\/\/support.microsoft.com\/help\/5066782\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066782<\/a><\/li>\n<li>Windows Server 2022 Datacenter: Azure Edition: \u30db\u30c3\u30c8\u30d1\u30c3\u30c1 <a href=\"https:\/\/support.microsoft.com\/topic\/235851f3-bc60-4de2-a4b2-88278e1d795d\" rel=\"noopener noreferrer\" target=\"_blank\">  \u30d9\u30fc\u30b9\u30e9\u30a4\u30f3<\/a><\/li>\n<li>Windows Server 2012 R2: \u6708\u6b21\u30ed\u30fc\u30eb\u30a2\u30c3\u30d7: <a href=\"https:\/\/support.microsoft.com\/help\/5066873\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066873<\/a><\/li>\n<li>Windows Server 2012: \u6708\u6b21\u30ed\u30fc\u30eb\u30a2\u30c3\u30d7: <a href=\"https:\/\/support.microsoft.com\/help\/5066875\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066875<\/a><\/li>\n<li>Windows Server 2008 R2 Service Pack 1: \u6708\u6b21\u30ed\u30fc\u30eb\u30a2\u30c3\u30d7: <a href=\"https:\/\/support.microsoft.com\/help\/5066872\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066872<\/a>&nbsp;\/ \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u307f: <a href=\"https:\/\/support.microsoft.com\/help\/5066876\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066876<\/a><\/li>\n<li>Windows Server 2008 SP2: \u6708\u6b21\u30ed\u30fc\u30eb\u30a2\u30c3\u30d7: <a href=\"https:\/\/support.microsoft.com\/help\/5066874\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066874<\/a> \/ \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u307f: <a href=\"https:\/\/support.microsoft.com\/help\/5066877\" rel=\"noopener noreferrer\" target=\"_blank\">  KB5066877<\/a><\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>MC1172445 | The October 2025 Windows security update is now available Classification stayInformed Last Updated [&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-13325","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/13325","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=13325"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/13325\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=13325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=13325"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=13325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}