醫療 IT 維運報告|2026-10-04

本期重點

1. Exchange Online EWS 退役分階段管制啟動,新增混合式郵件情境指引(持續追蹤): Microsoft Exchange Team 於 2026-09-30 補充混合式共存及跨組織分享的影響情境;EWS 管制分階段自 2026 年 10 月開始,Exchange Online 舊租戶設定可能在 rollout 中由 EWSEnabled = Null 改為 False。[7][8]

2. Microsoft Defender ISOC 公開預覽的第三方資料匯入計量自 10/1 開放: 符合資格的 Defender Suite、Microsoft 365 E5 或 E7 客戶可透過 500 多個連接器,以每 GB 2.40 美元的隨用隨付計量匯入非 Microsoft 資料;區域價格及其他條款可能不同。[1]

1. Exchange Online:EWS 分階段退役及混合式共存影響

2. Microsoft Defender:ISOC 非 Microsoft 資料匯入計量開始提供

去重與查核界線

Sources

[1] https://techcommunity.microsoft.com/blog/microsoftthreatprotectionblog/integrated-security-operations-center-in-microsoft-defender/4559097

"Starting October 1, 2026, eligible customers can use the $2.40 per GB meter to ingest non-Microsoft data through more than 500 connectors. Regional pricing and other terms may vary."
"Customers need an active, eligible Microsoft Defender Suite, Microsoft 365 E5 or E7 license. An Azure subscription is required to create an ISOC workspace and use workspace-dependent capabilities."

[7] https://techcommunity.microsoft.com/blog/exchange/exchange-online-ews-your-time-is-almost-up/4492361

"Any tenant with EWSEnabled still set to Null on October 1, 2026, will see the value changed to False as the deployment rolls out. That will block EWS for all applications in the tenant at that time."
"Review EWS usage reports in the Microsoft 365 admin center, and consider the published scripts if you need more information."
"Starting with April 1, 2027, EWS will be fully and permanently disabled."

[8] https://techcommunity.microsoft.com/blog/exchange/impact-of-exchange-online-ews-deprecation-on-hybrid-rich-coexistence-and-cross-o/4561161

"Changes to Exchange Web Services (EWS) in Exchange Online are imminent as per Exchange Online EWS, Your Time is Almost Up | Microsoft Community Hub. While EWS is not getting deprecated on-premises, we wanted to call out two specific scenarios that do impact our on-premises Exchange customers and how to ensure that your business is not impacted when Exchange Online EWS changes start happening between October 2026 and April 2027."
"For now, continue using EWS functionality with your Exchange Online tenant if you have on-premises mailboxes with online archives."
"Making sure that your tenant’s EWSEnabled setting is set to TRUE."
"Adding your dedicated Exchange hybrid application into your tenant’s EWSAllowedAppIDs (AppID allow list)."