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unable to activate firefox after download

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I have installed both Firefox and Thunderbird. However, I can't get either to work as I get a message telling me there is a version running in the background that must be closed first. I have then removed all evidence and versions of Firefox and Thunderbird. After everything is removed, I restate my computer, then download again. then when I try to startup, I get the same message about a version running in the background.

I have installed both Firefox and Thunderbird. However, I can't get either to work as I get a message telling me there is a version running in the background that must be closed first. I have then removed all evidence and versions of Firefox and Thunderbird. After everything is removed, I restate my computer, then download again. then when I try to startup, I get the same message about a version running in the background.

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Hi highbrae,

eventually your system is configured in a way that Firefox and or Thunderbird are Automatically Started by the Operating System.

you can try these guides:

please report if you need more information and also if one of these helped you.

sunny greetings stefan