Link to startpage not working in Microsoft Edge
We are using the HTML output of RoboHelp 2020.8.34.
The link to Startpage in the Breadcrumb-Menu seems not to work correctly when these conditions are met:
1. Microsoft Edge is used.
2. A specific topic is opened directly (e.g. by using a link) and not opened using the menu.
3. The html output is served by a webserver.
If then the link to startpage is used, a error from webserver occurs that "directory listing is turned off". It seems that RoboHelp tries to open a directory rather than the startpage.
However, the link to startpage works when
1. Google Chrome is used
2. or Firefox is used
3. or the html output is opened directly from hard disk, i.e. in browser a path like D:\RH\Output\1\topic.htm is used and not http://localhost/1/topic.htm.
Can someone verify this?
This is the link ("Startseite" is german for "Startpage"):

