Did anyone find a resolution to this issue
I am having the same exact issue with a new hardware refresh installation. We are using Windows 10 professional with SQL Express 2012 on the database and the offline database will not sync. No third part add-on. Firewall off. Antivirus off. Have used both machine name and IP address for database connection. Have deleted and recreated the offline database. Connects to the main database and operates without issue throughout day. Only think I haven't tried is a SQL reinstall. I have this same set up working elsewhere so I do not believe it is related to Windows 10 or SQL 2012.