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. Note: These vulnerabilities affect…
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 Microsoft Entra ID Conditional Access…
How to enable Hybrid Modern Authentication (HMA) in Exchange Server on-premises? We want to secure the Exchange on-premises organization with modern authentication instead of basic authentication. This way, we can use MFA for on-premises user mailboxes and not only for…
A hybrid deployment provides the seamless look and feel of a single Exchange organization between an on-premises Exchange organization and an Exchange Online organization. In addition, a hybrid deployment can serve as an intermediate step to moving completely to Exchange…
How to add an Exchange Online license to a mailbox in Exchange Hybrid? You have an Exchange Hybrid deployment, and you want to license the mailboxes. Before you do that, you must know how to create mailboxes. If you don't…
We see a mailbox with a different mailbox type in Exchange on-premises and Exchange Online. However, the mailbox type should be the same between both organizations in an Exchange Hybrid deployment. Why is that happening, and how to correct this…
Microsoft released Cumulative Update 10 for Exchange Server 2019 (KB5003612) on June 29, 2021. Also known as Exchange Server 2019 CU10. This Cumulative Update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. These…