we have an internal website with specific items eg. "//"
When i copy this link and put it in the browser, it does everything like it should be (open a new tab, navigates to the specific item and using my active login of another tab and showing the item).

When i put this link in Excel without a formula or in Word and click on it, it opens a new tab in the browser as it should be.
But the link leads to another location or forward it and i get the error message of Github "You are already logged in" and thats it.
It seems that Excel and Word is not only open the link but give the opening command an extra information which leads to a different Result.
Can someone provide me some information, on how the link opening process works?

Kind regards