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My Malwarebytes is suddenly blocking Firefox attempts to connect to coinhive.com. What's going on??

  • 2 replies
  • 6 have this problem
  • 2 views
  • Last reply by cor-el

RYukon
RYukon
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Earlier today I was checking my Yahoo email when I got a "red screen of death" that said i had to "click here" to get new Firefox download. I used Task Manager to shut the program down. Now, using another computer, when I am on Yahoo, Malwarebytes is blocking Firefox.exe attempts to a contact a couple of websites with the name *coinhive.com. I uninstalled Firefox, shut down my computer, then re-installed Forefox. Same problem!! I'm currently using Chrome to contact you. I also checked Yahoo and Yahoo mail with chrome with no problem

Earlier today I was checking my Yahoo email when I got a "red screen of death" that said i had to "click here" to get new Firefox download. I used Task Manager to shut the program down. Now, using another computer, when I am on Yahoo, Malwarebytes is blocking Firefox.exe attempts to a contact a couple of websites with the name *coinhive.com. I uninstalled Firefox, shut down my computer, then re-installed Forefox. Same problem!! I'm currently using Chrome to contact you. I also checked Yahoo and Yahoo mail with chrome with no problem

Chosen solution

If Malwarebytes is blocking a website then you will have to contact Malwarebytes support.

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All Replies (2)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
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Could you test Firefox in its Safe Mode? In Safe Mode, Firefox temporarily deactivates extensions, hardware acceleration, and some other advanced features to help you assess whether these are causing the problem.

If Firefox is not running: Hold down the Shift key when starting Firefox.

If Firefox is running: You can restart Firefox in Safe Mode using either:

  • "3-bar" menu button > "?" button > Restart with Add-ons Disabled
  • Help menu > Restart with Add-ons Disabled

and OK the restart.

Both scenarios: A small dialog should appear. Click "Start in Safe Mode" (not Refresh).

Any improvement?

If so, one possible culprit would be an extension. You can view, disable, and often remove unwanted or unknown extensions on the Add-ons page. Either:

  • Ctrl+Shift+a (Mac: Command+Shift+a)
  • "3-bar" menu button (or Tools menu) > Add-ons
  • type or paste about:addons in the address bar and press Enter/Return

In the left column of the Add-ons page, click Extensions. Then cast a critical eye over the list on the right side. Any extensions that Firefox installs on its own are hidden from this page, so everything listed here is your choice (and your responsibility) to manage. Anything suspicious? If in doubt, disable.

Sometimes a link will appear above a disabled extension to restart Firefox before the change takes effect. You can complete your work on the tab and click one of the links as the last step.

Any improvement?

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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Chosen Solution

If Malwarebytes is blocking a website then you will have to contact Malwarebytes support.