Windows 10 reached EOS (end of support) on October 14, 2025. For more information, see this article.

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I got a message saying, "Your Firefox profile can not be loaded. It may be missing or inaccessible."

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I got a message on my Win10 PC saying, "Your Firefox profile can not be loaded. It may be missing or inaccessible."

Mozilla help suggests looking in %APPDATA%\Mozilla\Firefox\Profiles\. I did this but don't know what to do next.

I have another Win10 PC where Mozilla still works, and they do sync. Should I copy some of the Mozilla folders from it to the first PC to restore the problem? Which ones?

BTW, I can still run the Mozilla TOR Browser on the first PC. Thank you!

I got a message on my Win10 PC saying, "Your Firefox profile can not be loaded. It may be missing or inaccessible." Mozilla help suggests looking in %APPDATA%\Mozilla\Firefox\Profiles\. I did this but don't know what to do next. I have another Win10 PC where Mozilla still works, and they do sync. Should I copy some of the Mozilla folders from it to the first PC to restore the problem? Which ones? BTW, I can still run the Mozilla TOR Browser on the first PC. Thank you!

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