{"id":18079,"date":"2026-08-26T11:01:28","date_gmt":"2026-08-26T02:01:28","guid":{"rendered":"https:\/\/m365jp.net\/?p=18079"},"modified":"2026-08-26T11:03:45","modified_gmt":"2026-08-26T02:03:45","slug":"servicedegradation-sp1461217-sharepoint-online-guest-users-are-unable-to-access-sharepoint-online-sites-connected-to-microsoft-teams-4","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-08-26-servicedegradation-sp1461217-sharepoint-online-guest-users-are-unable-to-access-sharepoint-online-sites-connected-to-microsoft-teams-4","title":{"rendered":"[serviceDegradation] SP1461217 | SharePoint Online | Guest users are unable to access SharePoint Online sites connected to Microsoft Teams"},"content":{"rendered":"
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SP1461217 | SharePoint Online | Guest users are unable to access SharePoint Online sites connected to Microsoft Teams<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\nserviceDegradation<\/td>\n<\/tr>\n
Classification<\/th>\nincident<\/td>\n<\/tr>\n
User Impact<\/th>\nGuest users are unable to access SharePoint Online sites connected to Microsoft Teams.<\/td>\n<\/tr>\n
Last Updated<\/th>\n08\/26\/2026 01:47:35<\/td>\n<\/tr>\n
Start Time<\/th>\n08\/25\/2026 01:58:05<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Guest users are unable to access SharePoint Online sites connected to Microsoft Teams <\/p>\n

User impact: Guest users are unable to access SharePoint Online sites connected to Microsoft Teams. <\/p>\n

More info: Specifically, guest users are redirected to an AccessDenied.aspx page when attempting to access SharePoint Online sites where access is granted through Microsoft 365 Groups.<\/p>\n

As a potential workaround, admins can manually add affected guest users directly to the SharePoint Members group instead of relying on Microsoft 365 Group membership propagation. <\/p>\n

Current status: We’ve received some feedback indicating the impact is now resolved after we reverted the change. We’re conducting persistent monitoring of the affected environment to ensure customers who previously reported the issue are seeing withstanding recovery. <\/p>\n

Scope of impact: This issue could impact any guest users attempting to access SharePoint Online sites where access is granted through Microsoft 365 Groups. <\/p>\n

Start time: Thursday, August 20, 2026, at 7:30 AM UTC <\/p>\n

Root cause: A recently deployed change interacted with dynamic claims process, causing impact. <\/p>\n

Next update by: Wednesday, August 26, 2026, at 7:30 AM UTC<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u30b2\u30b9\u30c8\u30e6\u30fc\u30b6\u30fc\u306fMicrosoft Teams\u306b\u63a5\u7d9a\u3055\u308c\u305fSharePoint Online\u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u305b\u3093 <\/p>\n

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\u73fe\u72b6:\u5909\u66f4\u3092\u5143\u306b\u623b\u3057\u305f\u3053\u3068\u3067\u5f71\u97ff\u304c\u89e3\u6d88\u3055\u308c\u305f\u3068\u3044\u3046\u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3092\u53d7\u3051\u53d6\u308a\u307e\u3057\u305f\u3002\u4ee5\u524d\u306b\u554f\u984c\u3092\u5831\u544a\u3057\u305f\u9867\u5ba2\u304c\u56de\u5fa9\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u3001\u5f71\u97ff\u3092\u53d7\u3051\u305f\u74b0\u5883\u306e\u7d99\u7d9a\u7684\u306a\u76e3\u8996\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002 <\/p>\n

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\u958b\u59cb\u6642\u9593:2026\u5e748\u670820\u65e5\u6728\u66dc\u65e5 \u5348\u524d7\u664230\u5206 UTC <\/p>\n

\u6839\u672c\u539f\u56e0:\u6700\u8fd1\u5c0e\u5165\u3055\u308c\u305f\u5909\u66f4\u304c\u52d5\u7684\u8acb\u6c42\u30d7\u30ed\u30bb\u30b9\u3068\u76f8\u4e92\u4f5c\u7528\u3057\u3001\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3057\u305f\u3002 <\/p>\n

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SP1461217 | SharePoint Online | Guest users are unable to access SharePoint Online sites connected to Microsof […]<\/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-18079","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/18079","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=18079"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/18079\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=18079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=18079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=18079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}