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Firefox will not reopen

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  • 1 has this problem
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  • Last reply by Scott

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Message: Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window.

Windows 11 version 21H2, build 22000.434

Message: Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window. Windows 11 version 21H2, build 22000.434

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Ok found the Parent.Lock file (not easily) and deleted it. Why is this still happening after 6-7 years?