{"id":18257,"date":"2026-09-02T04:01:57","date_gmt":"2026-09-01T19:01:57","guid":{"rendered":"https:\/\/m365jp.net\/?p=18257"},"modified":"2026-09-02T04:05:30","modified_gmt":"2026-09-01T19:05:30","slug":"servicedegradation-sp1464785-sharepoint-online-some-users-may-be-unable-to-access-sharepoint-online-sites-configured-with-authentication-context-4","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-09-02-servicedegradation-sp1464785-sharepoint-online-some-users-may-be-unable-to-access-sharepoint-online-sites-configured-with-authentication-context-4","title":{"rendered":"[serviceDegradation] SP1464785 | SharePoint Online | Some users may be unable to access SharePoint Online sites configured with Authentication Context"},"content":{"rendered":"
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SP1464785 | SharePoint Online | Some users may be unable to access SharePoint Online sites configured with Authentication Context<\/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>\nUsers may be unable to access SharePoint Online sites configured with Authentication Context.<\/td>\n<\/tr>\n
Last Updated<\/th>\n09\/01\/2026 18:05:23<\/td>\n<\/tr>\n
Start Time<\/th>\n08\/23\/2026 02:38:00<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users may be unable to access SharePoint Online sites configured with Authentication Context <\/p>\n

User impact: Users may be unable to access SharePoint Online sites configured with Authentication Context. <\/p>\n

More info: Specifically, users are unable to access SharePoint Online sites configured with Authentication Context through sensitivity labels.<\/p>\n

Users receive the following error message:
“Server Error in ‘\/’ Application.”<\/p>\n

As a workaround, users may be able to temporarily access the affected content by first clearing internet browser cookies and navigating to the root site collection before opening the direct link. Users can also open a new browser tab on the same session and access the site. The link may work as well. <\/p>\n

Current status: We’ve identified that a recent SharePoint Online code change intended to update authentication processing resulted in Authentication Context requests not being processed as expected, preventing some users from accessing affected sites. We’ve developed a fix to revert the offending change and have initiated deployment to the affected environments. We’re monitoring the deployment to ensure successful completion, and as the fix progresses, some users may experience impact relief. We’ll provide a resolution timeline once available. <\/p>\n

Scope of impact: Some users attempting to access SharePoint Online sites configured with Authentication Context through sensitivity labels may be impacted. <\/p>\n

Start time: Sunday, August 23, 2026, at 2:38 AM UTC <\/p>\n

Root cause: A recent SharePoint Online code change intended to update authentication processing resulted in Authentication Context requests not being processed as expected, preventing some users from accessing affected sites. <\/p>\n

Next update by: Wednesday, September 2, 2026, at 7:00 PM UTC<\/td>\n<\/tr>\n

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SP1464785 | SharePoint Online | Some users may be unable to access SharePoint Online sites configured with Aut […]<\/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-18257","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/18257","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=18257"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/18257\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=18257"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=18257"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=18257"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}