{"id":14508,"date":"2026-01-14T23:01:09","date_gmt":"2026-01-14T14:01:09","guid":{"rendered":"https:\/\/m365jp.net\/?p=14508"},"modified":"2026-01-14T23:01:19","modified_gmt":"2026-01-14T14:01:19","slug":"servicerestored-mo1213801-microsoft-365-suite-users-may-have-been-unable-to-access-shared-microsoft-to-do-lists","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-01-14-servicerestored-mo1213801-microsoft-365-suite-users-may-have-been-unable-to-access-shared-microsoft-to-do-lists","title":{"rendered":"[serviceRestored] MO1213801 | Microsoft 365 suite | Users may have been unable to access shared Microsoft To Do lists"},"content":{"rendered":"
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MO1213801 | Microsoft 365 suite | Users may have been unable to access shared Microsoft To Do lists<\/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 may have been unable to access shared Microsoft To Do lists.<\/td>\n<\/tr>\n
Last Updated<\/th>\n01\/14\/2026 13:52:49<\/td>\n<\/tr>\n
Start Time<\/th>\n12\/29\/2025 20:00:00<\/td>\n<\/tr>\n
End Time<\/th>\n01\/14\/2026 12:30:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may have been unable to access shared Microsoft To Do lists<\/p>\n

User impact: Users may have been unable to access shared Microsoft To Do lists.<\/p>\n

More info: Users may also have been unable to open shared To Do list invitation links.<\/p>\n

Final status: We\u2019ve confirmed that the issue is resolved following successful deployment of the fix.<\/p>\n

Scope of impact: This issue may have potentially impacted any user attempting to access shared Microsoft To Do lists.<\/p>\n

Start time: Monday, December 29, 2025, at 8:00 PM UTC<\/p>\n

End time: Wednesday, January 14, 2026, at 12:30 PM UTC<\/p>\n

Root cause: A recent change to add optimizations when sharing To Do lists introduced a misconfiguration which resulted in impact.<\/p>\n

Next steps:
– We\u2019ll continue monitoring the sharing functionality to ensure stability and service health.<\/p>\n

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

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u30e6\u30fc\u30b6\u30fc\u306f\u5171\u6709\u3055\u308c\u305fMicrosoft\u306eTo Do\u30ea\u30b9\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u304b\u3063\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059<\/p>\n

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\u3055\u3089\u306b\u8a73\u3057\u304f:\u30e6\u30fc\u30b6\u30fc\u306f\u5171\u6709\u306eTo Do\u30ea\u30b9\u30c8\u62db\u5f85\u30ea\u30f3\u30af\u3092\u958b\u3051\u306a\u304b\u3063\u305f\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u6700\u7d42\u72b6\u6cc1:\u4fee\u6b63\u306e\u5c0e\u5165\u306b\u6210\u529f\u3057\u305f\u305f\u3081\u3001\u554f\u984c\u306f\u89e3\u6c7a\u3055\u308c\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n

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\u958b\u59cb\u6642\u9593:2025\u5e7412\u670829\u65e5(\u6708)\u5348\u5f8c8\u6642(UTC)<\/p>\n

\u7d42\u4e86\u6642\u523b:2026\u5e741\u670814\u65e5\u6c34\u66dc\u65e5 12:30 PM UTC<\/p>\n

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\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
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MO1213801 | Microsoft 365 suite | Users may have been unable to access shared Microsoft To Do lists Status ser […]<\/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-14508","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/14508","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=14508"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/14508\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=14508"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=14508"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=14508"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}