EXCHANGE

Hi All, Microsoft has released the Exchange Server Security Updates yesterday for these Exchange Server Versions: Exchange Server Subscription Edition (SE) Exchange Server 2019 CU14 and CU15 (to access, enroll into the ESU program) Exchange Server 2016 CU23 (to access, enroll into the ESU program) Exchange Team Blog Article Released: December 2025 Exchange Server Security Updates Description of the security update for Microsoft Exchange Server Subscription Edition RTM: December 9, 2025 (KB5071876)

Hi All, A few Months ago i saw, that the recommendation for New-ApplicationAccessPolicy has changed. App Access Policies are replaced by Role Based Access Control for Applications. To learn more, see Role Based Access Control for Exchange Applications. Don’t create new App Access Policies as these policies will eventually require migration to Role Based Access Control for Applications. In Github you can see that the Change has been Published in August

Hi All, I write this Article about Distribution Group Manager in Exchange Server for two reasons First: I want to point out, how it’s represented in Exchange Server and actually stored in Active Directory Second: I’ll explain why Exchange Online Users can’t manage Group Members in Outlook anymore This is absolutly not anything new. Distribution Group Manager exists at least since Exchange Server 2010 or maybe even longer - honestly i don’t remember

Hi All, After i solved this Issue, i decided to write this Article to help others solve it too. Initial situation My Mailbox is in Exchange Online, but i have Full Access (with Automapping) to a Mailbox OnPrem, that is mapped into my Outlook Profile About a Month ago, i did get this Error Message in Outlook. Error Something went wrong. [4usqa] Correlation ld: 0f05e4c6-7doa-4e5a-962f-6611 b82fd6e4 Timestamp: 2025-10-22T06:07:14.000Z DPTI: bbb47eogc0037aadeb4933ca14060b6975dcgc5bg 1 15 If8daOcb Message: Access denied for the resource.

Hi All, This Week, Microsoft has annouced the Public Preview of Exchange Online Admin API. Announcing Public Preview: Exchange Online Admin API It’s a REST based API, specifically designed to help organizations migrate away from EWS for specific Exchange admin scenarios and modernize automation workflows over HTTPS. Keep in Mind the Deprecation of Exchange Web Services in Exchange Online October 2026 Capabilities available in Public Preview The Admin API Public Preview includes 6 endpoints.

Hi All, SWITCH operates as the official registry for Switzerland’s .ch and Liechtenstein’s .li country-code top-level domains (ccTLDs). It maintains the central database of all .ch domain names and runs the DNS infrastructure, ensuring that the Swiss internet remains stable and secure. This role is mandated by the Federal Office of Communications (OFCOM), as the DNS is considered part of Switzerland’s critical infrastructure Switch DNS Resilience Dashboard Do you know the Switch DNS Resilience Dashboard

Hi All, Did you notice that the EntraID User Accounts are now disabled when you create Shared Mailboxes in Exchange Online? In April this of Year i saw, that Shared Mailboxes in Exchange Online had disabled Entra Accounts. But it was not consistent in diffrent Tenants and disappeared after a few days. Now i have retested this, and the Entra ID Accounts of Shared Mailboxes are now disabled. I can’t tell when this change was implemented and i didn’t see any Documentation or Information in the Message Center - but it’s possible i’ve overseen that.

Hi All, Microsoft has released the Exchange Server Security Updates yesterday for these Exchange Server Versions: Exchange Server Subscription Edition (SE) Exchange Server 2019 Exchange Server 2016 October 2025 SUs are the last publicly available SUs for Exchange Server 2016 and 2019. From this point forward, only customers who contacted their Microsoft Account Teams to get the Extended Security Update (ESU) for those versions will receive new SUs that we might release for Exchange 2016 and 2019, through April 2026.

Hi All, Until now, for a Hybrid Deployment with Entra Connect Sync or Cloud Sync it was required to have an Exchange Server OnPrem or to use Exchange Recipient Management. A few Weeks ago, Microsoft has published an Article with another Option. Introducing Cloud-Managed Remote Mailboxes: a Step to Last Exchange Server Retirement With the Introducion of the “IsExchangeCloudManaged” Attribute, you can change the source of authority (SOA) from an OnPrem Synced Object for the Exchange Attributes (like Emailaddresses, Alias, HideFromAddressList, ExtensionAttributes) from OnPrem to the Cloud.

Hi All, Microsoft has released the Exchange Server Security Updates yesterday for all currently supported Versions: Exchange Server Subscription Edition (SE) Exchange Server 2019 Exchange Server 2016 Exchange Team Blog Article Released: September 2025 Exchange Server Hotfix Updates Hotfix update for Exchange Server Subscription Edition RTM HU2: September 8, 2025 (KB5066373) Online archiving fails for on-premises users in hybrid environment Issues that this hotfix update fixes: ​​​​​​​Online archiving fails for on-premises users in hybrid environment using the dedicated Hybrid App Exchange Server Subscription Edition In my case, i’ve downloaded the Security Update for Exchange Server Subscription Edition