Hello!
I have downloaded an S2A_OPER_PRD_MSIL1C product from the Hub, (the only available for the selected region) and after unzipping it, I try to open the xml file using the SNAP 5.0 versión
the problems seems to be related to the path length limitation on Windows. This was solved in a previous version of SNAP by using the short path names of Windows, but if the generation of short path names is not enabled in Windows, it is failing. (Please, see https://technet.microsoft.com/en-us/library/ff621566(v=ws.11).aspx )
I suggest to place the data folder directly in the root.
Yes it is a problem with the length of names of folders in Windows (I am using Windows 10). The problem is already solved with just changing the the unzipped S2 product folder name from:
S2A_OPER_PRD_MSIL1C_PDMC_20160710T021114_R037_V20160709T112403_20160709T112403.SAFE
to:
S2A_OPER_PRD_MSIL1C_PDMC.SAFE
In addition to the useful feedabck of Omar @obarrilero , You will find that products acquired on 06 December 2016 from and including Absolute Orbit 007608 (including the naming of folders and files within the product) have been compacted to overcome the 256 characters limitation on pathnames imposed by Windows platforms.
In order to investigate these products, you will need to update to SNAP 5.0.