Entra Connect - Access to onsite Server Shares

Hi SamE 

Setting up Entra Connect and syncing AD accounts with Entra ID can help in managing identities, but it won't directly provide access to on-premises Windows server shares.

The synchronization primarily ensures that user identities are consistent across on-premises and cloud environments, but access to file shares still relies on the on-premises Active Directory (AD) infrastructure.

Here are some useful articles and that delve into this topic:

1. https://learn.microsoft.com/en-us/entra/identity/hybrid/accounts: This article provides detailed information on the accounts required for integrating Active Directory with Microsoft Entra ID, which is crucial for understanding the synchronization process.
2. https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/reference-connect-accounts-permissions: This resource outlines the permissions and accounts needed for Entra Connect, helping you understand the setup and synchronization process.

For your scenario, maintaining access to on-premises shares will require continued reliance on your existing AD infrastructure. 

If you follow the advice from Kidd_Ip and there is a direct connection (Site-to-Site VPN), the access should technically work.

If you have any more questions or need further assistance, feel free to ask!

Regards, Matthias