Where are you opening these links from?

Let's try an experiment. Before clicking a link, hold down the <Shift> key. Is the problem still there?

Type about:preferences#general<enter> in the address bar. Turn on Make Firefox Default Browser. You can also turn on; Always Check Firefox Default Browser.

Hi, here is some more information and test results. I am opening links from Outlook 2013 email messages. Since Firefox opens when I click on the link, it seems that the default apps are configured properly. The problem also happens if I open Firefox manually and type a URL directly into the address bar. If I hold down Shift, all that happens is that the link text is selected, and the link is not opened. I tried quitting the Windscribe VPN (app, not browser plug-in) instead of "disconnecting" and the problem seemed to go away, but it came back. There may be some network-related issue, since sometimes I have to disable and re-enable my Ethernet adapter. All drivers and OS versions are fully updated.

Right-click the link, hold down <Shift> then select Open In Browser or whatever.

Opening hyperlink from a right-click still behaves the same. I did try disabling the Windscribe add-in and this seems to work much better. I will close this question and pursue it with Windscribe. Thanks for your suggestions.

How do you open the link if you "If I hold down Shift" ? Is this with the Enter key or do yo7 click the mouse of the Go (right pointing arrow) button?

Does the Console or Network Monitor show anything when this fails?

• https://developer.mozilla.org/en-US/Tools/Network_Monitor
• https://developer.mozilla.org/en-US/Tools/Web_Console
• https://developer.mozilla.org/en-US/Tools/Browser_Console