iTunes "network connection lost" error message, everything else works
I keep on getting an error message on iTunes saying that the network connection has been lost, but there is nothing wrong with the network connection and it means that downloading app updates or new albums from the iTunes store is almost impossible.
Up until a few months ago, everything worked fine.
I spoke to technical support who said it had something to do with the number of devices on my home network, but that doesn't explain why if I connect my computer to another internet service, iTunes works fine.
No other problems with anything on my home network or with any other service I use, e.g. Netflix, Amazon Video or Sky Q.
I have tried changing the DNS servers but that didn't help.