Windows Event Viewer - Error 1229 Operation attempted on a nonexistent network connection
Check to make sure that your DHCP range is large enough for all of your computers and ensure that they are all receiving leases. Make sure that the leases are being granted for a few days at least. Also, ensure that your DHCP server is configured to update DNS on behalf of the clients (Secure Dynamic Updates).
I'm assuming that you're using IIS since the QVWS shouldn't result in such an error. So also try the following: In IIS Manager, select Default Web Site --> ASP --> Com Plus Properties, and set the following fields with the following values.
Enable Side by Side Component = True Enable Tracker = True Execute in MTA = True Side By Side Component = MSMXL
Then restart IIS. Hopefully, one of the above steps would fix your problem.