NP-34925-3 occurs if the PS4 fails to upload Game Save Data to the Cloud server while the console is on stand-by mode. The error will appear in the [Uploads] section of the [Notification] menu, usually indicating that save data failed to upload.
The PS4 Support site doesn’t specify exactly what error NP-34925-3 means, but according to the Prefix table, the error has something to do with the remote Network Server the PS4 is trying to connect to. It is likely meant to indicate that the remote server was unavailable when trying to upload the data, i.e. the PlayStation Network could have been down, or the PS4 could not connect to the server (connectivity issue).
I received this error with relation to NBA2K14 uploading of save files. To solve this error I added the 2K ports to my firewall:
TCP 80,
UDP 88,
UDP 3074,
TCP 3074,
UDP 53,
TCP 53,
UDP 3064,
TCP 1795,
TCP 1745,
UDP 1795,
UDP 1745
Source:
http://support.2k.com/hc/en-us/articles/201334903-NBA-2K14-Connection-Troubleshooting
This NBA 2K14 error is completely unrelated to the NP-34925-3 described in this post.
This error occured with all of the files on my ps4. No files will upload but i can still see my friends that are online and my connection is fine. What can i do to fix this?
Go to the failed uploads and try retrying. If that doesn’t work, try using the Recovery Menu / Safe Mode to rebuild the database and try again.
I have this problem with XenoVerse 2, And and I keep retrying.
Have you tried to manually upload the save data using the Options button? It might give you an idea of what’s causing the problem (like conflict of data).