Ok techies

I have Windows 10, IE 11 and the latest Firefox. I'm not too tech savvy but can manage.

I have issues with Hotmail (now Outlook of course) and my ISP email (Tiscali/Talk Talk).

For the last few months, when using an Ethernet connection I get both Hotmail and Tiscali failing connections. If I switch to wireless - through the same router - they almost always work. I don't see it being an IP address issue because of the router and as far as I can tell I have nothing unusual in my set up although I do have a number of networked drives and printer.

I know Hotmail has had difficulties recently but this appears to be a totally separate issue.

Any suggestions (apart from going to Mac/Linux that is...)?

Cheers, Nick