I already commented that I have difficulties opening Sentinel 2A_MSIL2A files where I followed step by step the recommendations that helped to solve the same problem to EliaSt, but in my case it did not work.
But also, I can’t open Sentinel 3A_OL_2_LFR___ files either.
How can I solve this problem? I have several images to process with SNAP and I can’t do it.
this sounds strange. There are some remaining issues with S2 but they appear only on Mac.
That you can’t open also the S3 products might be an indicator that you installation got corrupted during the last update.
Try deleting these directories:
C:\Users[username]\AppData\Roaming\SNAP or C:\Users[username]\AppData\Local\SNAP
If this doesn’t help, I would suggest that you deinstall and SNAP and the reinstall it.
In both cases you need to update SNAP and reinstall plugins…