{"id":12811,"date":"2025-09-11T01:01:06","date_gmt":"2025-09-10T16:01:06","guid":{"rendered":"https:\/\/m365jp.net\/?p=12811"},"modified":"2025-09-11T01:01:41","modified_gmt":"2025-09-10T16:01:41","slug":"servicerestored-mo1148487-microsoft-365-suite-some-users-may-be-blocked-from-opening-urls-in-exchange-online-messages-and-microsoft-teams","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-09-11-servicerestored-mo1148487-microsoft-365-suite-some-users-may-be-blocked-from-opening-urls-in-exchange-online-messages-and-microsoft-teams","title":{"rendered":"[serviceRestored] MO1148487 | Microsoft 365 suite | Some users may be blocked from opening URLs in Exchange Online messages and Microsoft Teams"},"content":{"rendered":"
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MO1148487 | Microsoft 365 suite | Some users may be blocked from opening URLs in Exchange Online messages and Microsoft Teams<\/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>\nincident<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may have been blocked from opening URLs in Exchange Online messages and Microsoft Teams.<\/td>\n<\/tr>\n
Last Updated<\/th>\n09\/10\/2025 15:55:39<\/td>\n<\/tr>\n
Start Time<\/th>\n09\/05\/2025 13:10:00<\/td>\n<\/tr>\n
End Time<\/th>\n09\/09\/2025 20:46:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users may be blocked from opening URLs in Exchange Online messages and Microsoft Teams<\/p>\n

User impact: Users may have been blocked from opening URLs in Exchange Online messages and Microsoft Teams.<\/p>\n

More info: Additionally, admins may have received alerts titled “A potentially malicious URL click was detected involving one user”; however, the URLs were confirmed as safe.<\/p>\n

Some email messages may have also been incorrectly quarantined.<\/p>\n

Final status: After an extended period of monitoring, we’ve confirmed that service remains healthy and users will no longer experience impact. <\/p>\n

Scope of impact: Any user receiving email messages or messages within Microsoft Teams containing specific URLs may have been affected.<\/p>\n

Start time: Friday, September 5, 2025, at 1:10 PM UTC<\/p>\n

End time: Tuesday, September 9, 2025, at 8:46 PM UTC<\/p>\n

Preliminary root cause: An anti-spam service incorrectly flagged URLs contained within other URLs as potentially malicious, resulting in impact.<\/p>\n

Next steps:
– We’re further reviewing why the anti-spam service incorrectly flagged the affected URLs to prevent similar issues from happening in the future. <\/p>\n

We’ll provide a preliminary Post-Incident Report within two business days and a final Post-Incident Report within five business days.<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb: \u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u3001Exchange Online \u30e1\u30c3\u30bb\u30fc\u30b8\u3068 Microsoft Teams \u3067 URL \u3092\u958b\u304f\u3053\u3068\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff: \u30e6\u30fc\u30b6\u30fc\u304c Exchange Online \u30e1\u30c3\u30bb\u30fc\u30b8\u3068 Microsoft Teams \u3067 URL \u3092\u958b\u304f\u3053\u3068\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8a73\u7d30: \u3055\u3089\u306b\u3001\u7ba1\u7406\u8005\u306f\u300c1 \u4eba\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u95a2\u4e0e\u3059\u308b\u60aa\u610f\u306e\u3042\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b URL \u30af\u30ea\u30c3\u30af\u304c\u691c\u51fa\u3055\u308c\u307e\u3057\u305f\u300d\u3068\u3044\u3046\u30bf\u30a4\u30c8\u30eb\u306e\u30a2\u30e9\u30fc\u30c8\u3092\u53d7\u3051\u53d6\u3063\u305f\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001URL \u306f\u5b89\u5168\u3067\u3042\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n

\u4e00\u90e8\u306e\u96fb\u5b50\u30e1\u30fc\u30eb \u30e1\u30c3\u30bb\u30fc\u30b8\u3082\u8aa4\u3063\u3066\u9694\u96e2\u3055\u308c\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u6700\u7d42\u72b6\u614b: \u9577\u6642\u9593\u306e\u76e3\u8996\u306e\u5f8c\u3001\u30b5\u30fc\u30d3\u30b9\u304c\u6b63\u5e38\u306a\u307e\u307e\u3067\u3042\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u5f71\u97ff\u304c\u53ca\u3070\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u5f71\u97ff\u306e\u7bc4\u56f2: \u96fb\u5b50\u30e1\u30fc\u30eb \u30e1\u30c3\u30bb\u30fc\u30b8\u307e\u305f\u306f\u7279\u5b9a\u306e URL \u3092\u542b\u3080 Microsoft Teams \u5185\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u4fe1\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u958b\u59cb\u6642\u9593: 2025 \u5e74 9 \u6708 5 \u65e5\u91d1\u66dc\u65e5\u5348\u5f8c 1 \u6642 10 \u5206 UTC<\/p>\n

\u7d42\u4e86\u6642\u523b: 2025 \u5e74 9 \u6708 9 \u65e5\u706b\u66dc\u65e5\u5348\u5f8c 8 \u6642 46 \u5206 UTC<\/p>\n

\u4e88\u5099\u7684\u306a\u6839\u672c\u539f\u56e0: \u30b9\u30d1\u30e0\u5bfe\u7b56\u30b5\u30fc\u30d3\u30b9\u304c\u3001\u4ed6\u306e URL \u306b\u542b\u307e\u308c\u308b URL \u306b\u60aa\u610f\u306e\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3068\u8aa4\u3063\u3066\u30d5\u30e9\u30b0\u3092\u4ed8\u3051\u3001\u5f71\u97ff\u3092\u5f15\u304d\u8d77\u3053\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
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2\u55b6\u696d\u65e5\u4ee5\u5185\u306b\u66ab\u5b9a\u7684\u306a\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5f8c\u30ec\u30dd\u30fc\u30c8\u3092\u30015\u55b6\u696d\u65e5\u4ee5\u5185\u306b\u6700\u7d42\u7684\u306a\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u5f8c\u30ec\u30dd\u30fc\u30c8\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

MO1148487 | Microsoft 365 suite | Some users may be blocked from opening URLs in Exchange Online messages and […]<\/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-12811","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/12811","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=12811"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/12811\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=12811"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=12811"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=12811"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}