I downloaded R (3.6.0) and RStudio for Windows 7 SP1, 64bit. R works fine, but if I try to start RStudio I get the following screen:
RStudio tells me: "This site can't be reached. 127.0.0.1 refused to connect."
Also none of the menu bars are cllickable.
I tried to reinstall R and RStudio without an antimalware-program and without an activated firewall, but this did not solve the problem.
Following a search in the web I checked if "localhost" and "127.0.0.1" are on the list of approved Hosts and Domains; in Firefox, this is the case.
There was a slightly similar post a year ago, but the Problem was not the same, as it was on Windows 10 and as RStudio was usable if opened directly (Bizarre Behaviour: RStudio launches to "This site can’t be reached" page when opening scripts).
Does anybody have an idea how to fix this problem?
I would be very thankful. I am just starting to get to know R and it certainly would help to be able to use it on my own computer.