Assume that you are using an SFTP receive location in BizTalk Server to receive files from an SFTP server, and the receive location doesn't have sufficient file permissions to download one or more files from the SFTP server. In this case, you may notice that the receive location doesn't log any warnings or error entries in the event log, and it stops receiving any more files.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
This problem is fixed in the following cumulative update for BizTalk Server:
Cumulative Update 8 for BizTalk Server 2016
For information about the service packs and cumulative update list for BizTalk Server, see the following article in the Microsoft Knowledge Base:
2555976 Service pack and cumulative update list for BizTalk Server
For more information about BizTalk Server hotfixes, see the following article in the Microsoft Knowledge Base:
2003907 Information about BizTalk hotfixes and Cumulative Update support