Automatic Live Update Stops Working Following a Switch from Ethernet to Wireless ISP Connection

Twice now over the past 2 days, I've noticed that Automatic Live Update Stopped Working Following a Mid-Session Switch from an Ethernet ISP Connection to my in-home Wireless ISP Connection (AT&T DSL).  I normally always use the Ethernet cable for my internet connection at home (home office), but both yesterday and today, I had to use my PC remotely (for guests) during this holiday season, so while the PC was in use (i.e., Mid-Session), I first connected wirelessly, and then physically unplugged the Ethernet cable before moving the PC to the other room in the house for use at that new location.

 

It was then that I noticed that Automatic Live Update Stopped Working.  Manual Live Updates worked fine during each of these wireless sessions (i.e., my wireless internet connection was strong) , but at no time did Automatic Live Updates ever work. Also FYI, and FWIW, there was no problem surfing the Internet during these wireless sessions (i.e., again, the wireless internet connection was strong). 

 

Now, for the really strange part...when I disconnected from my wireless network and plugged the Ethernet cable back in to my PC during the same session, Automatic Live Update began working again almost immediately!!

 

FYI, this week is the first time I've ever done a Mid-Session Switch from an Ethernet ISP Connection to Wireless ISP Connection (and back again) since upgrading to NAV Version 21.1.0.18., so this is the first time I've observed these anomalous Automatic Live Update failures.

  

Can anybody explain why Automatic Live Update Stops Working (Manual Live Update works fine) Following a Mid-Session Switch from an Ethernet ISP Connection to a Wireless ISP Connection, and then resumes to correct/normal functionality following a switch back to the Ethernet ISP Connection from the Wireless ISP Connection??

 

DD

 

NAV Version 21.1.0.18 

2013 Dell Inspiron Windows 7 64 Bit Sp1