FAQs

Q: Do I need Exchange Hybrid for Microsoft Teams?

Not necessarily. If all mailboxes are already hosted in Exchange Online, a hybrid configuration is not required. However, if mailboxes are still located on-premises on an Exchange server, a hybrid deployment is often needed to provide full Teams functionality, including calendar integration.

Q: What are typical errors that occur in Exchange Hybrid?

Common causes of issues include: Faulty Autodiscover configuration Expired certificates Problems with OAuth or Modern Authentication Faulty DNS entries Synchronization issues with Microsoft Entra Connect Errors with Free/Busy information

Q: What is Exchange Hybrid?

Exchange Hybrid connects an on-premises Exchange organization with Exchange Online within Microsoft 365. This allows users to work both in the cloud and on on-premises Exchange servers, while features such as calendars, free/busy information, and mail routing work seamlessly together.

Q: Does NIS2 also apply to small companies with fewer than 50 employees?

Generally not—but there are exceptions. Companies , that provide critical services (e.g., in healthcare or digital infrastructure) may also be affected below the thresholds. In addition, large companies subject to NIS2 are increasingly requiring compliance evidence from their suppliers.

Q: Can I implement NIS2 as a SME myself or do I need external consultants?

Simple immediate measures like MFA-Activation or setup your back up system can be done internally and immedaitely. For governance structures, principle guidance and supply chain review we recommend external support - especially if no internally dedicated IT security team has been appointed.

Q: What is the first step in implementing NIS2?

The first step is to assess whether you are affected. The BSI provides a free online tool for this: betroffenheitspruefung-nis-2.bsi.de. After that, you should complete the BSI registration, if you have not already done so.

Do I need Exchange Hybrid for Microsoft Teams?

What are typical errors that occur in Exchange Hybrid?

What is Exchange Hybrid?

Does NIS2 also apply to small companies with fewer than 50 employees?

Can I implement NIS2 as a SME myself or do I need external consultants?

What is the first step in implementing NIS2?

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