Cookie authentication does not work with MS FLOW when using the REST API. 

If you like to authenticate with the DocuWare REST API, you need to handle the returned cookies from authentication request.

Unfortunately MS Flow cannot handle deletion cookies like this;
Set-Cookie: .DWPLATFORMAUTH=; path=/; expires=Thu, 01 Jan 1970 00:00:00 GMT;
(Setting expiration date into the past)

You need to transform the cookies and remove the “deletion” DocuWare cookies:


Set the transformed cookie string again to the next request.

KBA applicable for both Cloud and On-premise Organizations.