Error details: The FILE send adapter cannot open file path\file_name for writing because it is associated with an unsupported device type.
Additionally, BizTalk Server deletes the existing file from the Send folder. The Send instance remains in a dehydrated state. After the second retry, BizTalk Server puts the new file into the Send folder, and finishes the instance.
Article ID: 3108066 - Last Review: 31 Dec 2015 - Revision: 1