The issue has been solved. Dell Cares Associate recommended using the Remote Access procedure in Settings/System. Caution, this requires that all computers operate with Win10-Pro. My mistake was assuming that I had installed it on both, not true. Thank you Dell Cares.
An Inspiron-13 laptop on the network is not able to access an Inspiron 5490 after recent Win-10 updates. This has occurred in the past, but I was able to restore access to the 5490 by reentering sharing C: with "everyone". However this time I'm not able to restore network access to the 5490. The 5490 is able to access the Inspiron-13, and always has been with no problems, regardless of all Win-10 updates. Does anyone have a suggestion how to correct this issue? Thanks, Hank
Network Computer Cannot Access Inspiron 5490 After Windows Update