I do not know exactly which is the error you are having with winrar, but perhaps it is caused by the long path names of the files. You are working with an old product with the old naming convention. It uses a lot of character and in windows there is a limitation. See:
So in Windows, it is only possible to manage them if you use a very short path. For example, if you extract your product directly in C:/ or D:/ instead of D:/myFolder/myProducts/Sentinel2/…
On the other hand, some problems were also reported when using some zip tools. I suggest you to use 7zip