Connecting OutSystems with Dynamics365

Is there a way to consume Dynamics 365 from Outsystems.

I understand that forge has a Dynamic 365 Connector but i wish to access without Azure. Is there another way?
(Consuming through REST only gives me a 401 error)..

401 means "unauthorized", which means you don't pass the correct credentials. If Dynamics 365 has a REST interface, you can very likely consume it in OutSystems.