Krypton not playing well with Samba on RPi3

Please help. I have two RPi3’s running in separate rooms and one of them (lets say RPi#1) has Samba running and a powered external drive attached via USB for sharing media files. After updating to Krypton, RPi#2 gets an error (“Software caused connection abort.”) when I try to connect to RPi#1. I enabled Samba on RPi#2 and have no problem connecting to it with RPi#1 or my Windows pc. Any ideas on this?

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