You like to remove a mailbox server from DAG (Database Availability Group). However, when performing the removal task, you get the error: Mailbox server cannot be removed from the Database Availability Group because mailbox database has multiple copies. Use Remove-MailboxDatabaseCopy…
The time has come, the Exchange Server DAG (Database Availability Group) member failed, and it's not starting anymore. Of course, this is not great news because one Exchange Server failed. However, as long as you have a DAG configured, the…
Frustration about the autodiscover URL when you migrate to Office 365/Microsoft 365. Where do you need to point your autodiscover URL to in an Exchange hybrid configuration? Do you need to point the autodiscover record to the Exchange on-premises or…
How to renew a certificate in Exchange hybrid? You have a new third-party certificate installed on the Exchange Server. Now that you finished that task, you like to remove the old certificate. But, you get a message that these certificates…
The following tables are a comprehensive collection of the Microsoft Exchange Server schema versions. The tables show the Exchange objects in Active Directory that get updated each time you install a new version of Exchange. Compare the object versions you…
Since Exchange Server 2016 CU21 and Exchange Server 2019 CU10, users complain that there are Outlook problems. The Outlook application freezes and nothing helps until the Internet Information Services, or the Exchange Server is completely restarted. However, when the users…
When you create a Teams meeting in Outlook for another user, you get the error: Looks like you don't have permission to schedule meetings for this account. Talk to the owner to get permission and try again. Why is this…
We have a hybrid deployment between the Exchange on-premises organization and Exchange Online organization. The delegate permissions are set for the user to create Teams meetings. When we run Outlook and create a Teams meeting for other Exchange on-premises users,…
Microsoft released several Security Updates (SUs) for Microsoft Exchange Server to address vulnerabilities. Due to the critical nature of these vulnerabilities, we recommend that customers apply the updates to affected systems immediately to protect the environment. These vulnerabilities affect Microsoft…
Hybrid Modern Authentication (HMA) is implemented in the on-premises organization. This way, the users with an on-premises mailbox will use modern authentication instead of basic authentication. It's great because from now on, they will use Azure AD Conditional Access policies.…
