{"id":14059,"date":"2025-12-02T04:01:31","date_gmt":"2025-12-01T19:01:31","guid":{"rendered":"https:\/\/m365jp.net\/?p=14059"},"modified":"2025-12-02T04:07:02","modified_gmt":"2025-12-01T19:07:02","slug":"servicedegradation-ex1189359-exchange-online-users-may-be-unable-to-open-excel-files-attached-to-email-messages-in-new-outlook-and-receive-an-error-2","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-12-02-servicedegradation-ex1189359-exchange-online-users-may-be-unable-to-open-excel-files-attached-to-email-messages-in-new-outlook-and-receive-an-error-2","title":{"rendered":"[serviceDegradation] EX1189359 | Exchange Online | Users may be unable to open Excel files attached to email messages in new Outlook and receive an error"},"content":{"rendered":"
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EX1189359 | Exchange Online | Users may be unable to open Excel files attached to email messages in new Outlook and receive an error<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\nserviceDegradation<\/td>\n<\/tr>\n
Classification<\/th>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers may be unable to open Excel files attached to email messages in new Outlook and receive an error.<\/td>\n<\/tr>\n
Last Updated<\/th>\n12\/01\/2025 18:40:09<\/td>\n<\/tr>\n
Start Time<\/th>\n11\/24\/2025 02:33:31<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users may be unable to open Excel files attached to email messages in new Outlook and receive an error<\/p>\n

User impact: Users may be unable to open Excel files attached to email messages in new Outlook and receive an error.<\/p>\n

More info: Users receive an error stating: “Try opening the file again later.”<\/p>\n

This issue impacts attachments that contain non-ASCII characters. As a way to avoid impact, users with access to Outlook on the web can use this to bypass the impact or download the file locally to manually open Excel files.<\/p>\n

Current status: The process of validating the fix to address this issue is ongoing. We anticipate that the deployment of the fix should begin this week, and we\u2019ll provide an estimation for the completion of this process when available. <\/p>\n

Scope of impact: Any user may be unable to open Excel files attached to email messages in the new Outlook client if the attachment contains non-ASCII characters.<\/p>\n

Start time: Monday, November 24, 2025, at 6:00 PM UTC<\/p>\n

Root cause: An encoding error within Excel file names is resulting in this impact.<\/p>\n

Next update by: Thursday, December 4, 2025, at 8:00 PM UTC<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb:\u30e6\u30fc\u30b6\u30fc\u304c\u65b0\u3057\u3044Outlook\u3067\u30e1\u30fc\u30eb\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u6dfb\u4ed8\u3055\u308c\u305fExcel\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u305a\u3001\u30a8\u30e9\u30fc\u304c\u51fa\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:\u30e6\u30fc\u30b6\u30fc\u306f\u65b0\u3057\u3044Outlook\u3067\u30e1\u30fc\u30eb\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u6dfb\u4ed8\u3055\u308c\u305fExcel\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u305a\u3001\u30a8\u30e9\u30fc\u304c\u51fa\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8a73\u7d30\u60c5\u5831:\u30e6\u30fc\u30b6\u30fc\u306b\u300c\u5f8c\u3067\u518d\u5ea6\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3044\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u300d\u3068\u3044\u3046\u30a8\u30e9\u30fc\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u3053\u306e\u554f\u984c\u306fASCII\u4ee5\u5916\u306e\u6587\u5b57\u3092\u542b\u3080\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u306b\u5f71\u97ff\u3057\u307e\u3059\u3002\u5f71\u97ff\u3092\u907f\u3051\u308b\u65b9\u6cd5\u3068\u3057\u3066\u3001\u30a6\u30a7\u30d6\u4e0a\u306eOutlook\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u3053\u308c\u3092\u4f7f\u3063\u3066\u5f71\u97ff\u3092\u56de\u907f\u3057\u305f\u308a\u3001\u30ed\u30fc\u30ab\u30eb\u3067\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3057\u3066\u624b\u52d5\u3067Excel\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u73fe\u72b6:\u3053\u306e\u554f\u984c\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u306e\u4fee\u6b63\u306e\u691c\u8a3c\u30d7\u30ed\u30bb\u30b9\u306f\u73fe\u5728\u9032\u884c\u4e2d\u3067\u3059\u3002\u4fee\u6b63\u306e\u5c55\u958b\u306f\u4eca\u9031\u4e2d\u306b\u958b\u59cb\u3055\u308c\u308b\u898b\u8fbc\u307f\u3067\u3001\u5b8c\u4e86\u307e\u3067\u306e\u898b\u7a4d\u3082\u308a\u3092\u767a\u8868\u3057\u307e\u3059\u3002 <\/p>\n

\u5f71\u97ff\u7bc4\u56f2:\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u306bASCII\u4ee5\u5916\u306e\u6587\u5b57\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u65b0\u3057\u3044Outlook\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3067\u30e1\u30fc\u30eb\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u6dfb\u4ed8\u3055\u308c\u305fExcel\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u3051\u306a\u304f\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u958b\u59cb\u6642\u9593:2025\u5e7411\u670824\u65e5(\u6708)\u5348\u5f8c6\u6642(UTC)<\/p>\n

\u6839\u672c\u539f\u56e0:Excel\u30d5\u30a1\u30a4\u30eb\u540d\u5185\u306e\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u30df\u30b9\u304c\u3053\u306e\u5f71\u97ff\u3092\u5f15\u304d\u8d77\u3053\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u6b21\u56de\u66f4\u65b0:2025\u5e7412\u67084\u65e5\u6728\u66dc\u65e5 \u5348\u5f8c8\u6642 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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