Can't install Firefox extension
RichardPayne
Community Member
I have just configured a second profile in Firefox. I tried to install the 1Password extension from the Preferences > Browsers tab but it said:
I then closed all Firefox windows and tried again. Same thing.
I then checked Task Manager and confirmed that all Firefox processes have terminated. It still will not install the extension.
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It appears that your "Firefox is running" check is picking up Thunderbird too.
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@RichardPayne Have you tried to reboot your PC?
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No, I didn't need to. I closed Thunderbird and the extension installed. I have no idea why your Firefox check would be hitting Thunderbird, but it really shouldn't.
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Why not just use EnumProcesses looking for firefox.exe? Seems like a safer option.
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This discussion has been closed.