I have an XPS 8900 and an Inspiron 7373 2-1 on the same network. They can longer "see" each other since installing Win10 Update 2004. Each monthly 2004 patch update has not changed this issue.

Both computer's C drives allow full access to Everyone. Both computer's Advanced Access identify the other by name.

The XPS was able to "see" the Inspiron all the time prior to installing 2004. However the Inspiron had to be "tweeked" occasionally before it would "see" the XPS. Unfortunately I couldn't see a pattern to the tweeking, Just got lucky each time.

Has anyone seen this issue? I'm open to anyone's SWAG. Thanks y'all, much appreciated.