You're looking for a feature related to enabling multiple RDP (Remote Desktop Protocol) sessions on Windows Server 2016.

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By default, Windows Server allows for administrative purposes without any extra licensing. If you need to allow multiple sessions for the same user or slightly tweak how these two sessions are handled, you can use the Local Group Policy Editor : Press Win + R , type gpedit.msc , and hit Enter.

: Bypassing software limitations without authorization can violate the software license agreement. This could potentially lead to legal consequences for individuals or organizations found in breach of these agreements.