{"id":16991,"date":"2026-06-21T02:00:56","date_gmt":"2026-06-20T17:00:56","guid":{"rendered":"https:\/\/m365jp.net\/?p=16991"},"modified":"2026-06-21T02:15:18","modified_gmt":"2026-06-20T17:15:18","slug":"servicerestored-ex1394927-exchange-online-admins-may-be-unable-to-perform-actions-involving-domain-name-system-dns-records-within-the-exchange-admin-center","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-06-21-servicerestored-ex1394927-exchange-online-admins-may-be-unable-to-perform-actions-involving-domain-name-system-dns-records-within-the-exchange-admin-center","title":{"rendered":"[serviceRestored] EX1394927 | Exchange Online | Admins may be unable to perform actions involving Domain Name System (DNS) records within the Exchange admin center"},"content":{"rendered":"
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EX1394927 | Exchange Online | Admins may be unable to perform actions involving Domain Name System (DNS) records within the Exchange admin center<\/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 perform actions involving DNS records within the Exchange admin center.<\/td>\n<\/tr>\n
Last Updated<\/th>\n06\/20\/2026 16:30:46<\/td>\n<\/tr>\n
Start Time<\/th>\n06\/17\/2026 06:00:00<\/td>\n<\/tr>\n
End Time<\/th>\n06\/20\/2026 16:00:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Admins may be unable to perform actions involving Domain Name System (DNS) records within the Exchange admin center <\/p>\n

User impact: Admins may have been unable to perform actions involving DNS records within the Exchange admin center. <\/p>\n

More info: This issue may have impacted admins attempting to perform any actions involving DNS records within the Exchange admin center, such as provisioning new domains or mailboxes, accessing the Exchange admin center, or changing domains from IPv6 to IPv4. <\/p>\n

Final status: We’ve processed the backlog of accumulated requests and confirmed through monitoring service health telemetry that the impact has been remediated. <\/p>\n

Scope of impact: Admins attempting to perform actions involving DNS records within the Exchange admin center may have been impacted. <\/p>\n

Start time: Wednesday, June 17, 2026, at 6:00 AM UTC <\/p>\n

End time: Saturday, June 20, 2026, at 4:00 PM UTC <\/p>\n

Root cause: A recently enabled provisioning feature introduced a large number of synchronization divergences, resulting in repeated cmdlet executions that was causing resource contention and impact. <\/p>\n

Next steps:
– We’re reviewing the offending provisioning feature to determine why it introduced a large number of synchronization divergences once implemented, so that we can prevent similar issues from occurring in the future. <\/p>\n

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

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