I
had a similar problem after installing windows 10 version 1809
I was no longer able to access my NAS.
After enabling SMB 1.0
manually as
suggested by several forums I was able to se the NAS in the Network,
but was still not able to connect getting an error message.
At
the end after trying all different kind of
solutions at what worked for me was adding the credentials to access
the shared folder manually under Control Panel/Credential
Manager Windows Credentials Add a windows credential. Providing the network address as: \My_NAS_name\My_Shared_folder_name
together with user name and password.
Once the credential was created I was able to
access the NAS directly
from Network in File Explorer.
Hope this helps