{"id":17617,"date":"2026-07-31T07:04:11","date_gmt":"2026-07-30T22:04:11","guid":{"rendered":"https:\/\/m365jp.net\/?p=17617"},"modified":"2026-07-31T07:13:37","modified_gmt":"2026-07-30T22:13:37","slug":"servicedegradation-mo1440526-microsoft-365-suite-some-users-may-be-unable-to-share-files-with-external-recipients-through-sharepoint-online-and-microsoft-onedrive-9","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-07-31-servicedegradation-mo1440526-microsoft-365-suite-some-users-may-be-unable-to-share-files-with-external-recipients-through-sharepoint-online-and-microsoft-onedrive-9","title":{"rendered":"[serviceDegradation] MO1440526 | Microsoft 365 suite | Some users may be unable to share files with external recipients through SharePoint Online and Microsoft OneDrive"},"content":{"rendered":"
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MO1440526 | Microsoft 365 suite | Some users may be unable to share files with external recipients through SharePoint Online and Microsoft OneDrive<\/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 share files with external recipients through SharePoint Online and OneDrive.<\/td>\n<\/tr>\n
Last Updated<\/th>\n07\/30\/2026 21:46:48<\/td>\n<\/tr>\n
Start Time<\/th>\n07\/27\/2026 14:10:34<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users may be unable to share files with external recipients through SharePoint Online and Microsoft OneDrive <\/p>\n

User impact: Users may be unable to share files with external recipients through SharePoint Online and OneDrive. <\/p>\n

More info: Affected users may be unable to send external sharing invitations from SharePoint Online sites and OneDrive locations, despite external sharing being enabled at both the tenant and site levels. Upon failure, affected users encounter the following error: “That didn’t work: We couldn’t find a valid SharePoint Online license…” <\/p>\n

Current status: We’ve identified that this impact only occurs in a specific scenario: if your organization previously contacted Microsoft at some point in the past to specifically request that Microsoft turn off Unlicensed User Access for your organization. Otherwise, no impact is occurring. Furthermore, the reason why this was previously working, and is now not working, is we’ve identified that an unlicensed user check exists in the external sharing code that was previously not enforced, as one-time password (OTP) generation essentially rendered it unnecessary. However, with the recent deprecation of OTP, this check is now being enforced. We’ve identified two mitigations impacted organizations can take to relieve the issue:<\/p>\n

1) Affected organizations can provide a license to the external users they’re attempting to share with. <\/p>\n

2) Impacted organizations can create a support case and contact Microsoft to request that “Unlicensed User Access” be enabled for their tenant. <\/p>\n

We’re continuing to evaluate how unlicensed user access should interact with external sharing. <\/p>\n

Scope of impact: Some users attempting to share files with external recipients through SharePoint Online and OneDrive may be impacted. This information may be updated as our investigation continues. <\/p>\n

Root cause: Organizations that requested we turn off Unlicensed User Access for their organization are encountering this problem after OTP deprecation and unlicensed user check in the external sharing code is now being enforced. <\/p>\n

Next update by: Wednesday, August 5, 2026, at 10:30 PM UTC<\/td>\n<\/tr>\n

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1) \u5f71\u97ff\u3092\u53d7\u3051\u308b\u7d44\u7e54\u306f\u3001\u5171\u6709\u3057\u3088\u3046\u3068\u3057\u3066\u3044\u308b\u5916\u90e8\u30e6\u30fc\u30b6\u30fc\u306b\u30e9\u30a4\u30bb\u30f3\u30b9\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002 <\/p>\n

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MO1440526 | Microsoft 365 suite | Some users may be unable to share files with external recipients through Sha […]<\/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-17617","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/17617","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=17617"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/17617\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=17617"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=17617"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=17617"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}