Statement of fact: future simple

I don't think this example is future tense, because it is a description of the current state of the software (per the comment that a user tried the software and reported this error). The software doesn't transfer files at this moment, but it is expected that it should. The use of will not here indicates the modality. (Note: futurity may or may not be implied, as the software probably won't transfer files in the future as well).

Will is used to say what always happens in a particular situation or what is generally true.

Humankind will question the reason for its existence.

In informal English, will is also used to describe someone's habits, especially when you think they are annoying.

Most three-year olds will go on yelling until they get what they want.

In the example in the question, will may have been used to denote that something always happens or that it is annoying.