Firefox Support Forum

I am trying to move Firefox to my wife's new computer. I have pulled the HD out of the old computer and have linked it to the computer I'm typing on via a USB port. On it, I can navigate to the Profiles directory but when I attempt to copy it to my HD on this computer, I get this error:

    0X80004005: Unspecified error

I've reviewed pages by searching on the error code but nothing comes up that is relevant. I've cleared permissions on the Profiles directory and all its files ... to no avail.

I'm stumped. Any suggestions?

I broke an old computer and have my logins from it on a backup drive in logins.json and key4.db. I can't work out how to transfer these logins to my new computer. I've tried creating a new firefox profile since I am nervous of losing logins that are on my new computer, but then I am totally lost.

The update Firefox 100.0.1 ( or 2 ) has a bug: Firefox doesn't "see" the Fritz!Powerline ( LAN over Powerline adaptors ) and thus I can't enter the Fritz!Box. Even typing the IP address of the Fritz!Box doesn't help, because there is "no connecting" beyond the PC. The hardware works, so I can send and receive emails, but I can't access the internet via the firfox browser. Stepping back to 99.0.1, I had to "create a new profile" and all my previous ( before the update to 100.0.1 ) settings were lost, all bookmarks vanished ... I am rather angry, you know? This mail I'm sending via my notebook, as I this connects via 100 Mbit Lan network from an other room and as I had to "register" just to be able to complain ...

I need to be able to open my PDF'S in yahoo/Fire Fox, It stops me and puts me into some other option that I can read them. That option only allows me to read them only? So I have to go to outlook to read/move them ETC

Mozilla Firefox was automatically upgraded as I opened my computer. The new version started and the startup page was shown as if I had never used the Firefox browser on this computer before. I've been running Firefox on this computer for at least 6 years. All my saved data was gone. No bookmarks, no saved access accounts. When it asked me to migrate my data I didn't have the option to migrate any of my saved data from my previous version of Firefox. How do I get all my saved data back? I also received a message that one of my my gmail email account had been accessed by an unauthorized party. Is this also part of the installation process?

Please let me know what to do to get my saved data back.

Walter Fiori

Hello, I am having trouble downloading songs from you tube to my iTunes. it keeps showing me errors. I have account with Firefox..please help me. thank you.

Mrudula Patel

Due to runing Windows 7 and Microsoft no longer supporting this, I purchased a new Laptop, this came with windows 10 s installed, although I can switch to Windows 10, apparently it is not recommended and switching back would be impossible, but with Windows 10 s installed, you can not load Firefox or bookmarks, as Firefox has not been approved by Windows. If anyone can give any information or advice, it would be very much appreciated. Thank you in advance.

Hi Team,

As a concern,we want to enquire that since our company has its own product which uses Flash technology but its been known now that firefox will not suppport adobe flash player after 2020. So if we save and continue to use an oder version of firefox(with autoupdate off),will it allow to continue usage of Adobe Flash Player after 2020? Please confirm the same or any other workaround so that adobe flash player can be used within firefox after 2020 as well.

Thanks