{"id":17428,"date":"2026-07-22T08:01:45","date_gmt":"2026-07-21T23:01:45","guid":{"rendered":"https:\/\/m365jp.net\/?p=17428"},"modified":"2026-07-22T08:03:18","modified_gmt":"2026-07-21T23:03:18","slug":"mc1435782-microsoft-entra-id-retirement-of-custom-css-positioning-properties-in-custom-branding","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-07-22-mc1435782-microsoft-entra-id-retirement-of-custom-css-positioning-properties-in-custom-branding","title":{"rendered":"MC1435782 | Microsoft Entra ID: Retirement of custom CSS positioning properties in custom branding"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">MC1435782 | Microsoft Entra ID: Retirement of custom CSS positioning properties in custom branding<\/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>07\/21\/2026 22:20:31<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>07\/21\/2026 22:20:11<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td>12\/20\/2026 08:00:00<\/td>\n<\/tr>\n<tr>\n<th>Message Content<\/th>\n<td>\n<p><b>[What&nbsp;and&nbsp;Why]<\/b><\/p>\n<p>To&nbsp;align&nbsp;with&nbsp;Microsoft&#8217;s Secure Future Initiative (SFI) and&nbsp;its&nbsp;focus&nbsp;on&nbsp;identity&nbsp;security&nbsp;and&nbsp;phishing&nbsp;resistance,&nbsp;Microsoft&nbsp;is&nbsp;enhancing Microsoft Entra custom branding to&nbsp;support&nbsp;more&nbsp;secure,&nbsp;reliable,&nbsp;and&nbsp;consistent&nbsp;sign&nbsp;in&nbsp;experiences.&nbsp;Beginning&nbsp;in&nbsp;<b>October&nbsp;2026<\/b>,&nbsp;Microsoft&nbsp;Entra&nbsp;ID&nbsp;will&nbsp;retire&nbsp;support&nbsp;for   custom CSS positioning properties used&nbsp;in&nbsp;custom&nbsp;branding.&nbsp;Full&nbsp;retirement&nbsp;of&nbsp;all&nbsp;custom&nbsp;CSS&nbsp;is&nbsp;planned&nbsp;for&nbsp;a&nbsp;future&nbsp;date,&nbsp;and&nbsp;additional&nbsp;notice&nbsp;will&nbsp;be&nbsp;provided&nbsp;before&nbsp;that&nbsp;change&nbsp;occurs.<\/p>\n<p>This&nbsp;update&nbsp;helps&nbsp;further&nbsp;reduce&nbsp;opportunities&nbsp;for&nbsp;deceptive&nbsp;or&nbsp;misleading&nbsp;sign&nbsp;in&nbsp;page&nbsp;layouts&nbsp;and&nbsp;supports&nbsp;trusted&nbsp;sign&nbsp;in&nbsp;experiences&nbsp;that&nbsp;better&nbsp;protect&nbsp;users&nbsp;from&nbsp;phishing&nbsp;attacks&nbsp;while&nbsp;maintaining&nbsp;brand&nbsp;customization&nbsp;capabilities.<\/p>\n<\/p>\n<p>&lt;b[rollout&nbsp;schedule]<b>&lt;\/b[rollout&nbsp;schedule]<\/p>\n<ul>\n<li><b>General&nbsp;Availability&nbsp;(Worldwide&nbsp;and&nbsp;GCC):<\/b>&nbsp;Beginning&nbsp;in<b>&nbsp;October&nbsp;2026<\/b>&nbsp;and&nbsp;expected&nbsp;to&nbsp;complete&nbsp;by&nbsp;<b>late&nbsp;November&nbsp;2026<\/b><\/li>\n<\/ul>\n<p><b>[Impact&nbsp;on&nbsp;Your&nbsp;Organization]<b><\/b><\/b><\/p>\n<p><i>Who&nbsp;is&nbsp;affected<\/i><\/p>\n<ul>\n<li>Administrators&nbsp;managing&nbsp;Microsoft&nbsp;Entra&nbsp;ID&nbsp;company&nbsp;branding<\/li>\n<li>Organizations&nbsp;currently&nbsp;using&nbsp;custom&nbsp;CSS&nbsp;positioning&nbsp;properties&nbsp;in&nbsp;company&nbsp;branding<\/li>\n<li>Organizations&nbsp;that&nbsp;do&nbsp;not&nbsp;use&nbsp;custom&nbsp;CSS&nbsp;positioning&nbsp;properties&nbsp;as&nbsp;of&nbsp;July&nbsp;21,&nbsp;2026,&nbsp;are&nbsp;not&nbsp;affected&nbsp;and&nbsp;will&nbsp;not&nbsp;be&nbsp;able&nbsp;to&nbsp;use&nbsp;these&nbsp;properties&nbsp;going&nbsp;forward<\/li>\n<li>Microsoft&nbsp;Entra&nbsp;External&nbsp;ID&nbsp;tenants&nbsp;are&nbsp;not&nbsp;affected<\/li>\n<\/ul>\n<p><i>Platforms\/Services<\/i><\/p>\n<ul>\n<li>Microsoft&nbsp;Entra&nbsp;ID<\/li>\n<li>Custom&nbsp;branding&nbsp;for&nbsp;sign-in&nbsp;experiences (including company branding and branding themes)<\/li>\n<li>Web-based&nbsp;branded&nbsp;sign-in&nbsp;pages<\/li>\n<\/ul>\n<p><em>What&nbsp;will&nbsp;happen<\/em><\/p>\n<ul>\n<li>Existing&nbsp;tenants&nbsp;that&nbsp;currently&nbsp;use&nbsp;custom&nbsp;CSS&nbsp;positioning&nbsp;properties&nbsp;can&nbsp;continue&nbsp;using&nbsp;them&nbsp;until&nbsp;October&nbsp;2026.<\/li>\n<li>Beginning on October&nbsp;26,&nbsp;2026,&nbsp;the&nbsp;affected&nbsp;positioning&nbsp;properties&nbsp;will&nbsp;no&nbsp;longer&nbsp;be&nbsp;honored&nbsp;and&nbsp;will&nbsp;stop&nbsp;functioning.<\/li>\n<li>Branding&nbsp;elements&nbsp;on&nbsp;branded&nbsp;sign-in&nbsp;pages&nbsp;such&nbsp;as&nbsp;logos,&nbsp;images,&nbsp;and&nbsp;text&nbsp;will&nbsp;remain&nbsp;visible&nbsp;but&nbsp;may&nbsp;revert&nbsp;to&nbsp;their&nbsp;default&nbsp;placement&nbsp;and&nbsp;appearance.<\/li>\n<li>There&nbsp;is&nbsp;no&nbsp;supported&nbsp;migration&nbsp;path&nbsp;or&nbsp;replacement&nbsp;for&nbsp;the&nbsp;retired&nbsp;positioning&nbsp;properties.<\/li>\n<li>Organizations&nbsp;that&nbsp;do&nbsp;not&nbsp;already&nbsp;use&nbsp;custom&nbsp;CSS&nbsp;positioning&nbsp;properties&nbsp;cannot&nbsp;create&nbsp;new&nbsp;dependencies&nbsp;on&nbsp;these&nbsp;properties.<\/li>\n<li>New&nbsp;Microsoft&nbsp;Entra&nbsp;ID&nbsp;tenants&nbsp;created&nbsp;after&nbsp;January&nbsp;5,&nbsp;2026, do&nbsp;not&nbsp;have&nbsp;custom&nbsp;CSS&nbsp;available&nbsp;for&nbsp;company&nbsp;branding.<\/li>\n<li>Microsoft&nbsp;will&nbsp;notify&nbsp;impacted&nbsp;customers&nbsp;directly&nbsp;in&nbsp;advance&nbsp;of&nbsp;the&nbsp;retirement.<\/li>\n<\/ul>\n<p>The&nbsp;following&nbsp;CSS&nbsp;properties&nbsp;are&nbsp;being&nbsp;retired:<\/p>\n<ul>\n<li>position&nbsp;(including&nbsp;top,&nbsp;right,&nbsp;bottom,&nbsp;left,&nbsp;and&nbsp;z-index)<\/li>\n<li>margin&nbsp;(including&nbsp;margin-top,&nbsp;margin-bottom,&nbsp;margin-left,&nbsp;and&nbsp;margin-right)<\/li>\n<li>transform<\/li>\n<li>opacity<\/li>\n<li>overflow<\/li>\n<li>filter<\/li>\n<li>pointer-events<\/li>\n<li>clip-path<\/li>\n<li>mix-blend-mode<\/li>\n<li>translate<\/li>\n<\/ul>\n<p><b><b><strong>[Action&nbsp;Required\/Recommendations]<\/strong><\/b><\/b><\/p>\n<p>Action&nbsp;is&nbsp;required&nbsp;if&nbsp;your&nbsp;organization&nbsp;uses&nbsp;any&nbsp;of&nbsp;the&nbsp;retired&nbsp;positioning&nbsp;properties&nbsp;listed&nbsp;above.<\/p>\n<p>Recommended&nbsp;actions:<\/p>\n<ul>\n<li>Review&nbsp;your&nbsp;Microsoft&nbsp;Entra&nbsp;ID&nbsp;company&nbsp;branding&nbsp;configurations&nbsp;before&nbsp;October&nbsp;26,&nbsp;2026.<\/li>\n<li>Identify&nbsp;any&nbsp;usage&nbsp;of&nbsp;the&nbsp;retired&nbsp;CSS&nbsp;positioning&nbsp;properties.<\/li>\n<li>Remove&nbsp;or&nbsp;redesign&nbsp;branding&nbsp;customizations&nbsp;that&nbsp;depend&nbsp;on&nbsp;these&nbsp;properties.<\/li>\n<li>Validate&nbsp;your&nbsp;branded&nbsp;sign&nbsp;in&nbsp;experience&nbsp;after&nbsp;changes&nbsp;are&nbsp;made&nbsp;to&nbsp;ensure&nbsp;the&nbsp;layout&nbsp;remains&nbsp;acceptable.<\/li>\n<li>Communicate&nbsp;this&nbsp;upcoming&nbsp;change&nbsp;to&nbsp;identity&nbsp;administrators&nbsp;and&nbsp;support&nbsp;teams.<\/li>\n<\/ul>\n<p>To&nbsp;determine&nbsp;whether&nbsp;your&nbsp;tenant&nbsp;is&nbsp;using&nbsp;retired&nbsp;positioning&nbsp;properties:<\/p>\n<ul>\n<li>Sign&nbsp;in&nbsp;using&nbsp;a&nbsp;Global&nbsp;Administrator&nbsp;or&nbsp;Branding&nbsp;Administrator&nbsp;account.<\/li>\n<li>Use&nbsp;<a href=\"https:\/\/developer.microsoft.com\/graph\/graph-explorer\" rel=\"noopener noreferrer\" target=\"_blank\">Microsoft&nbsp;Graph&nbsp;Explorer<\/a>&nbsp;to&nbsp;retrieve&nbsp;your&nbsp;organization&nbsp;branding&nbsp;configuration.<\/li>\n<li>Review&nbsp;all&nbsp;configured&nbsp;branding&nbsp;localizations.<\/li>\n<li>Identify&nbsp;any&nbsp;references&nbsp;to&nbsp;the&nbsp;retired&nbsp;CSS&nbsp;positioning&nbsp;properties.<\/li>\n<li>Remove&nbsp;those&nbsp;properties&nbsp;before&nbsp;October&nbsp;2026.<\/li>\n<\/ul>\n<p>Learn&nbsp;more:&nbsp;<\/p>\n<ul>\n<li><a href=\"https:\/\/learn.microsoft.com\/entra\/fundamentals\/how-to-customize-branding\" target=\"_blank\">Configure your company branding | Fundamentals | Microsoft Entra | Microsoft Learn<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/entra\/fundamentals\/reference-company-branding-css-template#deprecation-of-custom-css-positioning-properties\" target=\"_blank\">CSS template reference guide | Fundamentals | Microsoft Entra | Microsoft Learn<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/entra\/fundamentals\/how-to-customize-branding-themes-apps\" target=\"_blank\">Customize the sign-in experience for your application with branding themes | Fundamentals | Microsoft Entra | Microsoft Learn<\/a><\/li>\n<li><a href=\"https:\/\/techcommunity.microsoft.com\/blog\/microsoft-entra-blog\/microsoft-entra-id-enhances-security-of-branded-sign-ins\/4537471\" target=\"_blank\">Microsoft Entra ID enhances security of branded sign-ins | Microsoft Entra Blog<\/a><\/li>\n<li><a href=\"https:\/\/www.microsoft.com\/trust-center\/security\/secure-future-initiative?msockid=22346ecb805f631739b27a6e81726266\" target=\"_blank\">Science Future Initiative (SFI) | Microsoft<\/a><\/li>\n<\/ul>\n<p><b><b><strong>[Compliance&nbsp;considerations]<\/strong><\/b><\/b><\/p>\n<p>No&nbsp;compliance&nbsp;considerations&nbsp;identified.&nbsp;Review&nbsp;as&nbsp;appropriate&nbsp;for&nbsp;your&nbsp;organization.<\/p>\n<\/td>\n<\/tr>\n<tr>\n<th>Machine Translation<\/th>\n<td>\n<p><b>\u3010\u4f55\u3068&nbsp;&nbsp;\u306a\u305c\u3011<\/b><\/p>\n<p>Microsoft\u306eSecure Future Initiative(SFI)\u3068&nbsp;&nbsp;\u30a2\u30a4\u30c7\u30f3\u30c6\u30a3\u30c6\u30a3&nbsp;\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3&nbsp;\u304a\u3088\u3073&nbsp;\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0&nbsp;\u5bfe\u7b56\u3078\u306e\u6ce8\u529b&nbsp;&nbsp;\u306b\u5408\u308f\u305b\u3066&nbsp;\u3001&nbsp;Microsoft&nbsp;&nbsp;Entra\u306e\u30ab\u30b9\u30bf\u30e0\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u5f37\u5316\u3057\u3001\u3088\u308a&nbsp;\u5b89\u5168\u3067&nbsp;\u4fe1\u983c\u6027&nbsp;\u304c\u9ad8\u304f&nbsp;\u4e00\u8cab\u3057\u305f&nbsp;\u30b5\u30a4\u30f3\u30a4\u30f3&nbsp;&nbsp;\u4f53\u9a13\u3092\u652f\u63f4\u3057&nbsp;\u3066\u3044\u307e\u3059&nbsp;\u3002<b>2026\u5e7410\u6708&nbsp;<\/b>\u304b\u3089\u958b\u59cb&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Microsoft&nbsp;Entra&nbsp;ID&nbsp;\u306f\u30ab\u30b9\u30bf\u30e0&nbsp;\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0\u3067\u4f7f\u7528\u3055\u308c\u308b&nbsp;\u30ab\u30b9\u30bf\u30e0CSS\u30dd\u30b8\u30b7\u30e7\u30cb\u30f3\u30b0\u30d7\u30ed\u30d1\u30c6\u30a3&nbsp;\u306e\u30b5\u30dd\u30fc\u30c8&nbsp;\u3092\u7d42\u4e86&nbsp;\u3057\u307e\u3059&nbsp;\u3002&nbsp;\u3059\u3079\u3066\u306e&nbsp;\u30ab\u30b9\u30bf\u30e0&nbsp;CSS&nbsp;\u306e&nbsp;\u5b8c\u5168\u306a&nbsp;\u5ec3&nbsp;\u6b62\u306f&nbsp;\u5c06\u6765&nbsp;\u7684\u306b\u4e88\u5b9a&nbsp;&nbsp;&nbsp;\u3055\u308c\u3066\u304a\u308a\u3001&nbsp;&nbsp;\u305d\u306e&nbsp;\u5909\u66f4&nbsp;\u524d\u306b&nbsp;\u8ffd\u52a0\u306e&nbsp;\u901a\u77e5&nbsp;&nbsp;&nbsp;\u304c\u884c\u308f\u308c\u307e\u3059\u3002&nbsp;&nbsp;<\/p>\n<p>\u3053\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306f\u3001\u8aa4\u89e3\u3092\u62db&nbsp;\u304f&nbsp;&nbsp;\u30b5\u30a4\u30f3\u30a4\u30f3&nbsp;&nbsp;\u30da\u30fc\u30b8&nbsp;\u30ec\u30a4\u30a2\u30a6\u30c8&nbsp;\u306e&nbsp;\u6a5f\u4f1a&nbsp;\u3092\u3055\u3089\u306b&nbsp;\u6e1b\u3089&nbsp;\u3057&nbsp;\u3001&nbsp;\u30d6\u30e9\u30f3\u30c9\u30ab\u30b9\u30bf\u30de\u30a4\u30ba&nbsp;\u6a5f\u80fd\u3092\u7dad\u6301\u3057&nbsp;&nbsp;\u3064&nbsp;\u3064\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0&nbsp;\u653b\u6483&nbsp;\u304b\u3089&nbsp;\u30e6\u30fc\u30b6\u30fc&nbsp;\u3092\u3088\u308a\u3088\u304f&nbsp;\u5b88\u308b&nbsp;\u4fe1\u983c\u3067\u304d\u308b&nbsp;\u30b5\u30a4\u30f3\u30a4\u30f3&nbsp;&nbsp;\u4f53\u9a13&nbsp;&nbsp;\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002&nbsp;&nbsp;&nbsp;<\/p>\n<\/p>\n<p>&lt;b[rollout&nbsp;schedule]<b>&lt;&gt;<\/p>\n<ul>\n<li><b>\u4e00\u822c\u7a3c\u50cd&nbsp;(&nbsp;\u4e16\u754c\u304a\u3088\u3073&nbsp;&nbsp;GCC):<\/b>&nbsp;<b>2026\u5e74&nbsp;10\u6708\u306b&nbsp;<\/b>\u958b\u59cb&nbsp;\u3001&nbsp;<b>2026\u5e7411\u6708&nbsp;\u4e0b\u65ec&nbsp;<\/b>\u307e\u3067\u306b&nbsp;\u5b8c\u4e86&nbsp;\u4e88\u5b9a&nbsp;&nbsp;&nbsp;<\/li>\n<\/ul>\n<p><b>[\u7d44\u7e54&nbsp;\u3078\u306e&nbsp;\u5f71\u97ff&nbsp;]<b><\/b><\/b><\/p>\n<p><i>\u5f71\u97ff\u3092\u53d7\u3051\u308b&nbsp;\u4eba\u7269&nbsp;<\/i><\/p>\n<ul>\n<li>Microsoft Entra&nbsp;ID&nbsp;\u306e\u4f01\u696d&nbsp;\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u7ba1\u7406\u3059\u308b&nbsp;\u7ba1\u7406\u8005&nbsp;&nbsp;<\/li>\n<li>\u73fe\u5728\u3001\u4f01\u696d&nbsp;\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0\u306b\u304a\u3044\u3066&nbsp;\u30ab\u30b9\u30bf\u30e0&nbsp;CSS&nbsp;\u30dd\u30b8\u30b7\u30e7\u30cb\u30f3\u30b0&nbsp;\u30d7\u30ed\u30d1\u30c6\u30a3&nbsp;\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b&nbsp;\u7d44\u7e54&nbsp;&nbsp;<\/li>\n<li>2026\u5e747\u670821&nbsp;\u65e5&nbsp;\u6642\u70b9\u3067&nbsp;&nbsp;\u30ab\u30b9\u30bf\u30e0&nbsp;CSS&nbsp;\u30dd\u30b8\u30b7\u30e7\u30cb\u30f3\u30b0&nbsp;\u30d7\u30ed\u30d1\u30c6\u30a3&nbsp;\u3092\u4f7f\u7528\u3057\u3066&nbsp;\u3044\u306a\u3044&nbsp;\u7d44\u7e54&nbsp;&nbsp;&nbsp;\u306f\u5f71\u97ff&nbsp;\u3092\u53d7\u3051\u305a&nbsp;\u3001&nbsp;&nbsp;\u4eca\u5f8c\u3053\u308c\u3089\u306e\u30d7\u30ed\u30d1\u30c6\u30a3&nbsp;&nbsp;\u3092\u4f7f\u7528\u3067\u304d\u307e\u305b\u3093&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<\/li>\n<li>Microsoft&nbsp;Entra&nbsp;\u306e\u5916\u90e8&nbsp;ID&nbsp;\u30c6\u30ca\u30f3\u30c8&nbsp;\u306f\u5f71\u97ff\u3092\u53d7\u3051\u307e\u305b\u3093&nbsp;&nbsp;<\/li>\n<\/ul>\n<p><i>\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\/\u30b5\u30fc\u30d3\u30b9<\/i><\/p>\n<ul>\n<li>Microsoft&nbsp;Entra&nbsp;ID<\/li>\n<li>\u30b5\u30a4\u30f3\u30a4\u30f3&nbsp;\u4f53\u9a13\u306e\u305f\u3081\u306e&nbsp;\u30ab\u30b9\u30bf\u30e0&nbsp;\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0&nbsp;(\u4f01\u696d\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0\u3084\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0\u30c6\u30fc\u30de\u3092\u542b\u3080)<\/li>\n<li>\u30a6\u30a7\u30d6\u30d9\u30fc\u30b9\u306e&nbsp;\u30d6\u30e9\u30f3\u30c9&nbsp;\u30b5\u30a4\u30f3\u30a4\u30f3&nbsp;\u30da\u30fc\u30b8<\/li>\n<\/ul>\n<p><em>\u4f55&nbsp;\u304c\u8d77\u3053\u308b\u306e\u304b&nbsp;<\/em><\/p>\n<ul>\n<li>\u73fe\u5728\u30ab\u30b9\u30bf\u30e0CSS&nbsp;\u30dd\u30b8\u30b7\u30e7\u30cb\u30f3\u30b0&nbsp;\u30d7\u30ed\u30d1\u30c6\u30a3&nbsp;\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b&nbsp;\u65e2\u5b58\u306e\u30c6\u30ca\u30f3&nbsp;&nbsp;\u30c8\u306f&nbsp;\u30012026\u5e7410\u6708&nbsp;\u307e\u3067&nbsp;\u5f15\u304d\u7d9a\u304d\u4f7f\u7528&nbsp;&nbsp;\u53ef\u80fd\u3067\u3059&nbsp;&nbsp;\u3002&nbsp;&nbsp;<\/li>\n<li>2026\u5e7410\u670826\u65e5\u3088\u308a\u3001&nbsp;&nbsp;\u5f71\u97ff\u3092\u53d7\u3051\u305f&nbsp;\u30dd\u30b8\u30b7\u30e7\u30cb\u30f3\u30b0&nbsp;\u7269\u4ef6&nbsp;&nbsp;\u306f\u4f7f\u7528\u3055\u308c\u305a&nbsp;&nbsp;&nbsp;&nbsp;\u3001&nbsp;\u6a5f\u80fd\u3092\u505c\u6b62&nbsp;\u3057\u307e\u3059\u3002&nbsp;&nbsp;&nbsp;<\/li>\n<li>\u30ed\u30b4\u3001\u753b\u50cf\u3001&nbsp;&nbsp;\u30c6\u30ad\u30b9\u30c8&nbsp;&nbsp;&nbsp;\u306a\u3069\u306e&nbsp;&nbsp;\u30d6\u30e9\u30f3\u30c9&nbsp;\u30b5\u30a4\u30f3\u30a4\u30f3&nbsp;\u30da\u30fc\u30b8&nbsp;\u4e0a\u306e&nbsp;\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0&nbsp;\u8981\u7d20&nbsp;\u306f\u5f15\u304d\u7d9a\u304d\u8868\u793a\u3055\u308c\u307e\u3059&nbsp;\u304c\u3001&nbsp;\u30c7\u30d5\u30a9\u30eb\u30c8\u306e&nbsp;\u914d\u7f6e&nbsp;\u3084&nbsp;\u5916\u89b3\u306b\u623b&nbsp;&nbsp;\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059&nbsp;&nbsp;\u3002&nbsp;<\/li>\n<li>\u9000\u5f79&nbsp;\u3057\u305f\u30dd\u30b8\u30b7\u30e7\u30cb\u30f3\u30b0&nbsp;\u7269\u4ef6\u306b\u306f&nbsp;&nbsp;\u3001\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u305f&nbsp;\u79fb\u884c&nbsp;\u7d4c\u8def&nbsp;\u3084&nbsp;\u4ee3\u66ff&nbsp;\u624b\u6bb5\u306f\u3042\u308a\u307e\u305b\u3093&nbsp;\u3002&nbsp;&nbsp;<\/li>\n<li>\u30ab\u30b9\u30bf\u30e0CSS\u306e\u30dd\u30b8\u30b7\u30e7\u30cb\u30f3\u30b0&nbsp;\u30d7\u30ed\u30d1\u30c6\u30a3&nbsp;\u3092\u65e2&nbsp;\u306b\u4f7f\u7528&nbsp;&nbsp;\u3057\u3066\u3044\u306a\u3044&nbsp;\u7d44\u7e54\u306f&nbsp;&nbsp;&nbsp;&nbsp;\u3001\u3053\u308c\u3089\u306e&nbsp;\u30d7\u30ed\u30d1\u30c6\u30a3\u306b&nbsp;\u65b0\u305f\u306a&nbsp;\u4f9d\u5b58\u95a2\u4fc2\u3092\u4f5c\u6210\u3059\u308b&nbsp;\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002&nbsp;&nbsp;<\/li>\n<li>2026\u5e741\u67085\u65e5\u4ee5\u964d\u306b\u4f5c\u6210\u3055\u308c\u305f&nbsp;\u65b0\u3057\u3044&nbsp;Microsoft&nbsp;Entra&nbsp;ID&nbsp;\u30c6\u30ca\u30f3\u30c8&nbsp;\u306b\u306f&nbsp;\u3001\u4f01\u696d&nbsp;\u30d6\u30e9\u30f3\u30c9\u306e\u305f\u3081\u306e&nbsp;\u30ab\u30b9\u30bf\u30e0&nbsp;CSS&nbsp;\u304c\u5229\u7528\u3067\u304d\u307e\u305b\u3093&nbsp;&nbsp;&nbsp;\u3002&nbsp;&nbsp;&nbsp;<\/li>\n<li>\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8&nbsp;\u306f\u3001\u5f15\u9000\u524d\u306b\u5f71\u97ff&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u3092\u53d7\u3051\u308b&nbsp;\u9867\u5ba2&nbsp;\u306b\u76f4\u63a5\u901a\u77e5&nbsp;\u3057\u307e\u3059\u3002&nbsp;<\/li>\n<\/ul>\n<p>\u4ee5\u4e0b\u306eCSS&nbsp;\u30d7\u30ed\u30d1\u30c6\u30a3&nbsp;\u304c\u5ec3\u6b62\u3055\u308c\u307e\u3059&nbsp;&nbsp;:&nbsp;&nbsp;<\/p>\n<ul>\n<li>\u4f4d\u7f6e&nbsp;(\u30c8\u30c3\u30d7\u3001&nbsp;\u30e9\u30a4\u30c8\u3001&nbsp;\u30dc\u30c8\u30e0\u3001&nbsp;\u30ec\u30d5\u30c8&nbsp;&nbsp;\u3001Z\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u542b\u3080&nbsp;)<\/li>\n<li>\u4f59\u767d&nbsp;(\u4f59\u767d-\u4e0a\u3001&nbsp;\u4f59\u767d-\u4e0b\u3001&nbsp;\u4f59\u767d-\u5de6&nbsp;&nbsp;\u3001\u4f59\u767d-\u53f3\u3092\u542b\u3080&nbsp;)<\/li>\n<li>\u5909\u63db<\/li>\n<li>\u4e0d\u900f\u660e\u5ea6<\/li>\n<li>\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc<\/li>\n<li>\u30d5\u30a3\u30eb\u30bf\u30fc<\/li>\n<li>\u30dd\u30a4\u30f3\u30bf\u30a4\u30d9\u30f3\u30c8<\/li>\n<li>\u30af\u30ea\u30c3\u30d7\u30d1\u30b9<\/li>\n<li>\u30df\u30c3\u30af\u30b9\u30d6\u30ec\u30f3\u30c9\u30e2\u30fc\u30c9<\/li>\n<li>\u7ffb\u8a33<\/li>\n<\/ul>\n<p><b><b><strong>[\u884c\u52d5&nbsp;\u304c\u5fc5\u8981\/\u63d0\u8a00]<\/strong><\/b><\/b><\/p>\n<p>\u4e0a\u8a18\u306e\u9000\u8077\u3057\u305f\u30dd\u30b8\u30b7\u30e7\u30f3&nbsp;\u7269\u4ef6&nbsp;&nbsp;\u306e\u3044\u305a\u308c\u304b\u3092\u5229\u7528\u3057&nbsp;&nbsp;&nbsp;&nbsp;\u3066\u3044\u308b\u5834\u5408\u306f&nbsp;&nbsp;&nbsp;\u3001\u5bfe\u5fdc&nbsp;&nbsp;\u304c\u5fc5\u8981\u3067\u3059\u3002&nbsp;&nbsp;<\/p>\n<p>\u63a8\u5968\u3055\u308c\u308b&nbsp;\u884c\u52d5:<\/p>\n<ul>\n<li>2026\u5e7410\u670826\u65e5\u307e\u3067\u306bMicrosoft Entra&nbsp;ID&nbsp;\u306e\u4f01\u696d&nbsp;&nbsp;\u30d6\u30e9\u30f3\u30c9\u8a2d\u5b9a&nbsp;\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044&nbsp;&nbsp;\u3002&nbsp;&nbsp;&nbsp;&nbsp;<\/li>\n<li>\u5ec3\u6b62\u3055\u308c\u305f&nbsp;CSS&nbsp;\u306e\u4f4d\u7f6e\u4ed8\u3051&nbsp;\u30d7\u30ed\u30d1\u30c6\u30a3\u306e&nbsp;\u5229\u7528&nbsp;\u4f8b&nbsp;\u3092\u7279\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044&nbsp;\u3002&nbsp;<\/li>\n<li>\u3053\u308c\u3089\u306e&nbsp;\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u4f9d\u5b58&nbsp;&nbsp;\u3059\u308b&nbsp;\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0&nbsp;\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3092\u524a\u9664&nbsp;\u307e\u305f\u306f&nbsp;\u518d\u8a2d\u8a08&nbsp;\u3057\u307e\u3057\u3087\u3046&nbsp;\u3002<\/li>\n<li>\u30ec\u30a4\u30a2\u30a6\u30c8\u304c\u8a31\u5bb9\u7bc4\u56f2\u306b\u4fdd\u305f\u308c\u308b\u3088\u3046\u3001\u5909\u66f4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u5f8c\u3082&nbsp;\u30d6\u30e9\u30f3\u30c9\u306e&nbsp;\u30b5\u30a4\u30f3\u30a4\u30f3&nbsp;&nbsp;\u4f53\u9a13&nbsp;\u3092\u691c\u8a3c&nbsp;&nbsp;\u3057\u3066\u304f\u3060\u3055\u3044\u3002&nbsp;<\/li>\n<li>\u3053\u306e\u5909\u66f4&nbsp;\u3092\u30a2\u30a4\u30c7\u30f3\u30c6\u30a3\u30c6\u30a3&nbsp;\u7ba1\u7406\u8005&nbsp;\u3084&nbsp;\u30b5\u30dd\u30fc\u30c8&nbsp;\u30c1\u30fc\u30e0\u306b&nbsp;\u4f1d\u3048\u307e\u3057\u3087\u3046&nbsp;\u3002&nbsp;&nbsp;<\/li>\n<\/ul>\n<p>\u5165\u5c45&nbsp;\u8005\u304c\u9000\u8077&nbsp;\u3057\u305f\u30dd\u30b8\u30b7\u30e7\u30cb\u30f3\u30b0&nbsp;\u7269\u4ef6\u3092\u4f7f\u3063\u3066&nbsp;\u3044\u308b\u304b\u3069\u3046\u304b&nbsp;&nbsp;\u3092\u5224\u65ad&nbsp;\u3059\u308b\u306b\u306f&nbsp;:&nbsp;<\/p>\n<ul>\n<li>\u30b0\u30ed\u30fc\u30d0\u30eb&nbsp;\u7ba1\u7406\u8005&nbsp;\u307e\u305f\u306f&nbsp;\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0&nbsp;\u7ba1\u7406\u8005&nbsp;\u30a2\u30ab\u30a6\u30f3\u30c8\u3067&nbsp;&nbsp;\u30b5\u30a4\u30f3\u30a4\u30f3&nbsp;&nbsp;\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><a href=\"https:\/\/developer.microsoft.com\/graph\/graph-explorer\" rel=\"noopener noreferrer\" target=\"_blank\">Microsoft&nbsp;Graph&nbsp;Explorer<\/a>&nbsp;\u3092\u4f7f\u3063\u3066&nbsp;&nbsp;\u3001\u7d44\u7e54&nbsp;\u306e\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0&nbsp;\u8a2d\u5b9a\u3092\u53d6\u5f97\u3057&nbsp;&nbsp;\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li>\u3059\u3079\u3066\u306e&nbsp;\u8a2d\u5b9a\u6e08\u307f&nbsp;\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0&nbsp;\u30ed\u30fc\u30ab\u30ea\u30bc\u30fc\u30b7\u30e7\u30f3\u3092\u78ba\u8a8d\u3057&nbsp;\u307e\u3057\u3087\u3046\u3002<\/li>\n<li>\u5f15\u9000\u3057\u305fCSS\u306e\u30dd\u30b8\u30b7\u30e7\u30cb\u30f3\u30b0&nbsp;\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u95a2\u3059\u308b&nbsp;&nbsp;\u53c2\u7167&nbsp;\u3092\u7279\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044&nbsp;&nbsp;\u3002&nbsp;&nbsp;<\/li>\n<li>\u3053\u308c\u3089\u306e&nbsp;\u7269\u4ef6&nbsp;\u306f2026\u5e7410\u6708&nbsp;\u307e\u3067\u306b&nbsp;\u524a\u9664\u3057\u3066\u304f\u3060\u3055\u3044&nbsp;\u3002<\/li>\n<\/ul>\n<p>\u8a73\u3057\u304f\u306f\u3053\u3061\u3089&nbsp;:&nbsp;<\/p>\n<ul>\n<li><a href=\"https:\/\/learn.microsoft.com\/entra\/fundamentals\/how-to-customize-branding\" target=\"_blank\">\u4f1a\u793e\u306e\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0\u3092\u8a2d\u5b9a |\u57fa\u790e |Microsoft Entra |Microsoft Learn<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/entra\/fundamentals\/reference-company-branding-css-template#deprecation-of-custom-css-positioning-properties\" target=\"_blank\">CSS\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u53c2\u7167\u30ac\u30a4\u30c9 |\u57fa\u790e |Microsoft Entra |Microsoft Learn<\/a><\/li>\n<li><a href=\"https:\/\/learn.microsoft.com\/entra\/fundamentals\/how-to-customize-branding-themes-apps\" target=\"_blank\">\u30d6\u30e9\u30f3\u30c7\u30a3\u30f3\u30b0\u30c6\u30fc\u30de\u3067\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5408\u3063\u305f\u30b5\u30a4\u30f3\u30a4\u30f3\u4f53\u9a13\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba |\u57fa\u790e |Microsoft Entra |Microsoft Learn<\/a><\/li>\n<li><a href=\"https:\/\/techcommunity.microsoft.com\/blog\/microsoft-entra-blog\/microsoft-entra-id-enhances-security-of-branded-sign-ins\/4537471\" target=\"_blank\">Microsoft Entra ID\u304c\u30d6\u30e9\u30f3\u30c9\u30b5\u30a4\u30f3\u30a4\u30f3\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5f37\u5316\u3059\u308b|Microsoft Entra \u30d6\u30ed\u30b0<\/a><\/li>\n<li><a href=\"https:\/\/www.microsoft.com\/trust-center\/security\/secure-future-initiative?msockid=22346ecb805f631739b27a6e81726266\" target=\"_blank\">\u30b5\u30a4\u30a8\u30f3\u30b9\u30fb\u30d5\u30e5\u30fc\u30c1\u30e3\u30fc\u30fb\u30a4\u30cb\u30b7\u30a2\u30c6\u30a3\u30d6(SFI) |\u30de\u30a4\u30af\u30ed\u30bd\u30d5\u30c8<\/a><\/li>\n<\/ul>\n<p><b><b><strong>[\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9&nbsp;\u306e\u8003\u616e\u4e8b\u9805]<\/strong><\/b><\/b><\/p>\n<p>\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9&nbsp;\u4e0a\u306e\u8003\u616e\u4e8b\u9805\u306f\u7279\u5b9a\u3055\u308c\u3066\u3044\u307e\u305b\u3093&nbsp;\u3002&nbsp;\u7d44\u7e54&nbsp;\u306b\u9069\u3057\u305f&nbsp;\u30ec\u30d3\u30e5\u30fc&nbsp;&nbsp;&nbsp;\u3092\u884c\u3044&nbsp;\u307e\u3057\u3087\u3046\u3002<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>MC1435782 | Microsoft Entra ID: Retirement of custom CSS positioning properties in custom branding Classificat [&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-17428","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/17428","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=17428"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/17428\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=17428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=17428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=17428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}