{"id":17440,"date":"2026-07-23T14:02:43","date_gmt":"2026-07-23T05:02:43","guid":{"rendered":"https:\/\/m365jp.net\/?p=17440"},"modified":"2026-07-23T14:06:48","modified_gmt":"2026-07-23T05:06:48","slug":"servicerestored-tm1436888-microsoft-teams-admins-may-be-unable-to-enforce-data-loss-prevention-dlp-policies-in-microsoft-teams","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-07-23-servicerestored-tm1436888-microsoft-teams-admins-may-be-unable-to-enforce-data-loss-prevention-dlp-policies-in-microsoft-teams","title":{"rendered":"[serviceRestored] TM1436888 | Microsoft Teams | Admins may be unable to enforce Data Loss Prevention (DLP) policies in Microsoft Teams"},"content":{"rendered":"
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TM1436888 | Microsoft Teams | Admins may be unable to enforce Data Loss Prevention (DLP) policies in 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>\nadvisory<\/td>\n<\/tr>\n
User Impact<\/th>\nAdmins may have been unable to enforce DLP policies in Microsoft Teams.<\/td>\n<\/tr>\n
Last Updated<\/th>\n07\/23\/2026 04:34:48<\/td>\n<\/tr>\n
Start Time<\/th>\n06\/22\/2026 07:00:00<\/td>\n<\/tr>\n
End Time<\/th>\n07\/23\/2026 04:20:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Admins may be unable to enforce Data Loss Prevention (DLP) policies in Microsoft Teams <\/p>\n

User impact: Admins may have been unable to enforce DLP policies in Microsoft Teams. <\/p>\n

More info: DLP policies configured in Microsoft Purview successfully detected policy matches, but the expected enforcement actions weren’t being applied within Microsoft Teams. As a result, messages that should have been blocked may have continued to be delivered. This applied to all Microsoft Teams channels. <\/p>\n

Final status: We’ve validated through our testing that an authentication configuration change made to the service infrastructure affected the enforcement of DLP policies, which led to impact. We’ve successfully deployed our fix to roll back this configuration change in all environments and confirmed that impact has been resolved. <\/p>\n

Scope of impact: Any admin may have been impacted and may have been unable to enforce DLP policies in Microsoft Teams. <\/p>\n

Start time: Monday, June 22, 2026, at 7:00 AM UTC <\/p>\n

End time: Thursday, July 23, 2026, at 4:20 AM UTC <\/p>\n

Root cause: An authentication configuration change made to the service infrastructure affected the enforcement of DLP policies, which led to impact. <\/p>\n

Next steps:
– We’re reviewing our feature update testing and validation methods to better identify the potential for impact to DLP policies prior to deployment to prevent similar impact in the future, and to improve our pre-deployment update testing processes. <\/p>\n

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

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\u958b\u59cb\u6642\u9593:2026\u5e746\u670822\u65e5(\u6708)\u5348\u524d7\u6642(UTC) <\/p>\n

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\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
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