I have a replica that I have tried to generate multiple times. It always returns this error when trying to open
var gdb = await Geodatabase.OpenAsync(file.FullName);
The only thing I can think of different from all the other successful offline replicas I have used is that this contains features in a geometric network. Is it not possible to load features from a geometric network?
The error message is a little poor (we're working on improving that) but generally the NoData error has been known to mean the file could either not be found, be read or is an invalid/unexpected format.
Having said that, geometric networks aren't supported (yet) so that could be why this error occurs, rather than just skipping over that part.
Please try to assign the folder permission to "ALL APPLICATION PACKAGES" group. Right click the folder where the map resides, Properties > Security > Edit > Add > From This Location set to Machine name select from the tree > Search Object name "ALL APPLICATION PACKAGES" > OK
This only applies to UWP, and I believe Joe Hershman is using WPF (judging from his other posts)
Sorry I never updated with solution, but the issue does seem to have been the geometric network. After we dropped the network and regenerated it worked as expected