New Media Source Won't Scan

[TheDreadPirate]

On my Windows test setup, I have my SMB share mapped to a drive letter and have no issue navigating down. I have on drive letter for my entire library and use the M:\Movies, M:\Shows, etc., for each library.

Not sure if what you're experiencing is some sort of permissions issue. Does Jellyfin run as an admin or as your user? One thing with my test setup that may not be typical for other users is that my desktop Windows user name matches the SMB user (but different passwords). Not sure if that matters.