Unable to connect to network share devices

About 3 weeks ago, I lost complete access to all my SMB network devices both at home and at work. I can't figure out what is going on with it. I can browse the internet and do my normal ftp, vnc etc. But when I try and connect to a network drive, I get the error below.

There was a problem connecting to the server “192.168.1.81”.

Check the server name or IP address, and then try again. If you continue to have problems, contact your system administrator.

To my knowledge, two things happened around the same time as when I lost SMB ability. I turned on file sharing so I remotely send my kid a file and a Mac OS update was downloaded.

I've tried googling for answers, but nothing I have found works. I've tried turning off SMB signing and using CIFS instead of SMB. Nothing works.

Anyone have any suggestions of things to try? I'm kind of at a loss and my only other thought is to wipe the OS and start over.