Certificate Error in word only

[T-Bird]

Hi, thanks in advance for any help given. The less technical, the better.

Since doing a fresh instal of both W8.1 and Office pro 2016, I have issues with some website links, when preparing word docs.

They work in Wordpad and when placed in emails and forums. Only some links are affected.

Copy and paste a website link to a word doc and it may or may not work. When it doesn't, I first get the window saying Certificate Error and when that is clicked, another saying Cannot locate internet or proxy server.

Thanks.