{"id":15509,"date":"2026-03-21T04:01:19","date_gmt":"2026-03-20T19:01:19","guid":{"rendered":"https:\/\/m365jp.net\/?p=15509"},"modified":"2026-03-21T04:06:17","modified_gmt":"2026-03-20T19:06:17","slug":"servicerestored-mo1243496-microsoft-365-suite-some-admins-may-be-unable-to-deploy-custom-add-ins-from-the-microsoft-365-admin-center-and-users-cant-access-add-ins","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-03-21-servicerestored-mo1243496-microsoft-365-suite-some-admins-may-be-unable-to-deploy-custom-add-ins-from-the-microsoft-365-admin-center-and-users-cant-access-add-ins","title":{"rendered":"[serviceRestored] MO1243496 | Microsoft 365 suite | Some admins may be unable to deploy custom add-ins from the Microsoft 365 admin center and users can&#8217;t access add-ins"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">MO1243496 | Microsoft 365 suite | Some admins may be unable to deploy custom add-ins from the Microsoft 365 admin center and users can&#8217;t access add-ins<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<table id=\"data\">\n<tbody>\n<tr>\n<th>Status<\/th>\n<td class=\"bad\">serviceRestored<\/td>\n<\/tr>\n<tr>\n<th>Classification<\/th>\n<td>advisory<\/td>\n<\/tr>\n<tr>\n<th>User Impact<\/th>\n<td>Admins may have been unable to deploy custom add-ins from the Microsoft 365 admin center.<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>03\/20\/2026 18:21:49<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>01\/21\/2026 10:27:00<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td>03\/19\/2026 19:00:00<\/td>\n<\/tr>\n<tr>\n<th>Latest Message<\/th>\n<td>Title: Some admins may be unable to deploy custom add-ins from the Microsoft 365 admin center and users can&#8217;t access add-ins<\/p>\n<p>  User impact: Admins may have been unable to deploy custom add-ins from the Microsoft 365 admin center.<\/p>\n<p>  More info: Admins may have seen an error that stated, \u201cLearn more about eligibility requirements\u201d<\/p>\n<p>  Final status: Our deployment has completed and we&#8217;ve confirmed through service health telemetry and with a subset of affected users that the impact is remediated.<\/p>\n<p>  Scope of impact: Any admin that attempted deploy custom add-ins from the Microsoft 365 admin center may have been impacted.<\/p>\n<p>  Start time: Wednesday, January 21, 2026, at 10:27 AM UTC<\/p>\n<p>  End time: Thursday, March 19, 2026, at 7:00 PM UTC<\/p>\n<p>  Root cause: A recent service change designed to enforce stricter authentication requirements blocked admins from deploying custom add-ins from the Microsoft 365 admin center.<\/p>\n<p>  Next steps: <br \/>  &#8211; We&#8217;re reviewing our service change testing and validation procedures to identify and prevent similar issues with authentication requirements in deployments moving forward.<\/p>\n<p>  This is the final update for the event.<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>MO1243496 | Microsoft 365 suite | Some admins may be unable to deploy custom add-ins from the Microsoft 365 ad [&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-15509","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15509","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=15509"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15509\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=15509"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=15509"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=15509"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}