Issue accessing file share in different AD forest

Daniel 41 Reputation points


I am having trouble accessing a file share that is located in a different AD forest from my laptop with AlwaysONVPN configured.

I am able to access the file share without issue from a servers that are located in AD forest B and AD forest C network domain, but not from my VPN-connected laptop. I have confirmed that DNS resolution and network connectivity are working properly. Does anyone have any ideas on what could be causing this issue?

Attached for context is a diagram of the AD Forests setup:

User's image Thanks in advance for any suggestions!

Active Directory
Active Directory
A set of directory-based technologies included in Windows Server.
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  1. Daniel 41 Reputation points


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  2. Karlie Weng 13,796 Reputation points Microsoft Vendor


    Perform a packet capture using tools like Wireshark while attempting to access the file share as both an admin user and a regular user. Analyze the captured packets to compare the network traffic between the two scenarios. Look for differences in protocols used, authentication attempts, or any other relevant details.

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