{"id":14671,"date":"2026-01-24T11:01:11","date_gmt":"2026-01-24T02:01:11","guid":{"rendered":"https:\/\/m365jp.net\/?p=14671"},"modified":"2026-01-24T11:06:08","modified_gmt":"2026-01-24T02:06:08","slug":"servicerestored-sp1220310-sharepoint-online-some-users-that-are-mentioned-in-list-comments-in-sharepoint-online-may-not-receive-email-notifications","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-01-24-servicerestored-sp1220310-sharepoint-online-some-users-that-are-mentioned-in-list-comments-in-sharepoint-online-may-not-receive-email-notifications","title":{"rendered":"[serviceRestored] SP1220310 | SharePoint Online | Some users that are mentioned in list comments in SharePoint Online may not receive email notifications"},"content":{"rendered":"
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SP1220310 | SharePoint Online | Some users that are mentioned in list comments in SharePoint Online may not receive email notifications<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\nserviceRestored<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers that were mentioned in list comments in SharePoint Online may have not received email notifications.<\/td>\n<\/tr>\n
Last Updated<\/th>\n01\/24\/2026 01:27:03<\/td>\n<\/tr>\n
Start Time<\/th>\n01\/08\/2026 12:24:00<\/td>\n<\/tr>\n
End Time<\/th>\n01\/24\/2026 01:07:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users that are mentioned in list comments in SharePoint Online may not receive email notifications<\/p>\n

User impact: Users that were mentioned in list comments in SharePoint Online may have not received email notifications.<\/p>\n

Final status: Our reversion of the offending change has completed its saturation process throughout the affected environment, and we\u2019ve confirmed through an extended period of monitoring the service health telemetry that impact has been remediated. <\/p>\n

Scope of impact: Impact was specific to some users that were mentioned in list comments in SharePoint Online.<\/p>\n

Start time: Thursday, January 8, 2026, at 12:24 PM UTC<\/p>\n

End time: Saturday, January 24, 2026, at 1:07 AM UTC<\/p>\n

Root cause: A recent service change to remove a separate feature introduced a regression within SharePoint Online email notifications, which resulted in impact.<\/p>\n

Next steps:
– We\u2019re continuing to analyze how the service change was partially applied to understand why the potential for impact wasn’t caught during the update testing and validation phase. These actions will help us to clarify what actions we can take to ensure similar impact doesn’t occur in future and to continue our ongoing mission to improve the resilience of our service for all SharePoint Online users.<\/p>\n

This is the final update for the event.<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:SharePoint Online\u306e\u30ea\u30b9\u30c8\u30b3\u30e1\u30f3\u30c8\u306b\u540d\u524d\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u30e1\u30fc\u30eb\u901a\u77e5\u3092\u53d7\u3051\u53d6\u308c\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:SharePoint Online\u306e\u30ea\u30b9\u30c8\u30b3\u30e1\u30f3\u30c8\u3067\u8a00\u53ca\u3055\u308c\u305f\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u30e1\u30fc\u30eb\u901a\u77e5\u3092\u53d7\u3051\u53d6\u3063\u3066\u3044\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u6700\u7d42\u72b6\u6cc1:\u554f\u984c\u306e\u5909\u66f4\u306e\u30ea\u30d0\u30fc\u30c8\u306f\u5f71\u97ff\u3092\u53d7\u3051\u305f\u74b0\u5883\u5168\u4f53\u3067\u98fd\u548c\u30d7\u30ed\u30bb\u30b9\u3092\u5b8c\u4e86\u3057\u3001\u30b5\u30fc\u30d3\u30b9\u30d8\u30eb\u30b9\u30c6\u30ec\u30e1\u30c8\u30ea\u30fc\u306e\u9577\u671f\u76e3\u8996\u3092\u901a\u3058\u3066\u5f71\u97ff\u304c\u662f\u6b63\u3055\u308c\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u5f71\u97ff\u7bc4\u56f2:\u5f71\u97ff\u306fSharePoint Online\u306e\u30ea\u30b9\u30c8\u30b3\u30e1\u30f3\u30c8\u3067\u8a00\u53ca\u3055\u308c\u305f\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u7279\u6709\u306e\u3082\u306e\u3067\u3057\u305f\u3002<\/p>\n

\u958b\u59cb\u6642\u9593:2026\u5e741\u67088\u65e5\u6728\u66dc\u65e5 12:24 PM UTC<\/p>\n

\u7d42\u4e86\u6642\u523b:2026\u5e741\u670824\u65e5\u571f\u66dc\u65e5 \u5348\u524d1\u664207\u5206 UTC<\/p>\n

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\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
– \u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3001\u30c6\u30b9\u30c8\u3001\u691c\u8a3c\u30d5\u30a7\u30fc\u30ba\u3067\u5f71\u97ff\u306e\u53ef\u80fd\u6027\u304c\u306a\u305c\u6349\u3048\u3089\u308c\u306a\u304b\u3063\u305f\u306e\u304b\u3092\u7406\u89e3\u3059\u308b\u305f\u3081\u3001\u30b5\u30fc\u30d3\u30b9\u5909\u66f4\u306e\u90e8\u5206\u7684\u306a\u9069\u7528\u65b9\u6cd5\u306e\u5206\u6790\u3092\u7d99\u7d9a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u63aa\u7f6e\u306f\u3001\u540c\u69d8\u306e\u5f71\u97ff\u304c\u5c06\u6765\u8d77\u3053\u3089\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306b\u53d6\u308c\u308b\u63aa\u7f6e\u3092\u660e\u78ba\u306b\u3057\u3001\u3059\u3079\u3066\u306eSharePoint Online\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u30b5\u30fc\u30d3\u30b9\u306e\u30ec\u30b8\u30ea\u30a8\u30f3\u30b9\u5411\u4e0a\u3068\u3044\u3046\u7d99\u7d9a\u7684\u306a\u4f7f\u547d\u3092\u7d99\u7d9a\u3059\u308b\u52a9\u3051\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n

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SP1220310 | SharePoint Online | Some users that are mentioned in list comments in SharePoint Online may not re […]<\/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-14671","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/14671","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=14671"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/14671\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=14671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=14671"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=14671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}