{"id":11214,"date":"2025-04-25T09:00:55","date_gmt":"2025-04-25T00:00:55","guid":{"rendered":"https:\/\/m365jp.net\/?p=11214"},"modified":"2025-04-25T09:04:57","modified_gmt":"2025-04-25T00:04:57","slug":"servicedegradation-ex1056704-exchange-online-users-may-see-a-503-error-when-starting-outlook-classic-in-online-mode-or-utilizing-the-exchange-admin-center-eac","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-04-25-servicedegradation-ex1056704-exchange-online-users-may-see-a-503-error-when-starting-outlook-classic-in-online-mode-or-utilizing-the-exchange-admin-center-eac","title":{"rendered":"[serviceDegradation] EX1056704 | Exchange Online | Users may see a 503 error when starting Outlook (classic) in online mode or utilizing the Exchange admin center (EAC)"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">EX1056704 | Exchange Online | Users may see a 503 error when starting Outlook (classic) in online mode or utilizing the Exchange admin center (EAC)<\/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\">serviceDegradation<\/td>\n<\/tr>\n<tr>\n<th>Classification<\/th>\n<td>advisory<\/td>\n<\/tr>\n<tr>\n<th>User Impact<\/th>\n<td>Users may see a 503 error when starting Outlook (classic) in online mode or utilizing the EAC.<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>04\/24\/2025 23:53:59<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>04\/02\/2025 04:29:00<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td><\/td>\n<\/tr>\n<tr>\n<th>Latest Message<\/th>\n<td>Title: Users may see a 503 error when starting Outlook (classic) in online mode or utilizing the Exchange admin center (EAC)<\/p>\n<p>  User impact: Users may see a 503 error when starting Outlook (classic) in online mode or utilizing the EAC.<\/p>\n<p>  More info: Some users intermittently may be unable to start Outlook (classic) when in working online mode and encounter the following error: &#8220;HTTP 503 Service Unavailable.&#8221;<\/p>\n<p>  Additionally, when attempting to complete operations in the Exchange admin center (EAC), admins are returned a &#8220;503 Service Unavailable\u201d error.<\/p>\n<p>  Current status: We&#8217;ve amended the Title, User impact, and More info sections of this communication to more fully capture the affected scenarios. We&#8217;re further analyzing a portion of Exchange Online infrastructure responsible for EAC and Outlook (classic) functionality   to help with understanding the root cause. Additionally, we&#8217;re investigating if a possible networking issue could be contributing to the &#8220;503 Service Unavailable&#8221; errors to help with the underlying investigation.<\/p>\n<p>  Scope of impact: Any user who attempts to start Outlook (classic) when working in online mode or utilize the EAC may be impacted by this event.<\/p>\n<p>  Next update by: Friday, April 25, 2025, at 2:00 AM UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>EX1056704 | Exchange Online | Users may see a 503 error when starting Outlook (classic) in online mode or util [&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-11214","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/11214","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=11214"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/11214\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=11214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=11214"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=11214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}