Mozilla VPN is currently experiencing an outage. Our team is actively working to resolve the issue. Please check the status page for real-time updates. Thank you for your patience.

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Nightly 19.0a1 gives Class not registered error when pinned to taskbar Windows 8

  • 1 reply
  • 35 have this problem
  • 23 views
  • Last reply by jgabor

more options

Firefox Nightly open fine fron the Windows 8 start menu and from and icon on the desktop. It only gives me the error when I pin it to the taskbar. I am thinking it may be more of a Windows error but Nightly is the only program that it happens with. Nightly pins itself to the taskbar automatically but I tried removing and repinning and it still does it.

Firefox Nightly open fine fron the Windows 8 start menu and from and icon on the desktop. It only gives me the error when I pin it to the taskbar. I am thinking it may be more of a Windows error but Nightly is the only program that it happens with. Nightly pins itself to the taskbar automatically but I tried removing and repinning and it still does it.

All Replies (1)

more options

I still have this problem too and I believe I've had it since Nightly 17.0a1.

A small workaround is to right-click the icon and select "Open new tab".