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Firefox "Resource busy" problem

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  • 1 has this problem
  • Last reply by cor-el

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Cannot open Firefox 76.0.1.dmg because "Resource busy" - MacBook Pro Mojave 10.14.6. What to do? Thank you.

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Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

Helpful?

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Make sure you install Firefox properly.

Open the Firefox Disk Images file and drag the Firefox application to the Applications folder on your hard drive. You shouldn't double-click the Firefox application to run it from the Disk Images, but instead drag it out of the DMG folder.

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