Windows 10 bereikte EO (einde ondersteuning) op 14 oktober 2025. Lees voor meer informatie dit artikel.

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

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Profle data lost when upgraded

shawkins74
shawkins74
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When i upgraded Firefox my old profile doesn't show up now. I found my old profile under about:profiles but when i click on the Launch profile in new browser i get this message, "You've launched an older version of Firefox. Using an older version of Firefox can corrupt bookmarks and browsing history already saved to an existing Firefox profile. To protect your information, create a new profile for this installation of Firefox" I did create a new profile but how do i get my old saved data, add ons etc to the new profile?

When i upgraded Firefox my old profile doesn't show up now. I found my old profile under about:profiles but when i click on the Launch profile in new browser i get this message, "You've launched an older version of Firefox. Using an older version of Firefox can corrupt bookmarks and browsing history already saved to an existing Firefox profile. To protect your information, create a new profile for this installation of Firefox" I did create a new profile but how do i get my old saved data, add ons etc to the new profile?

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jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
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Hi, your Firefox identified itself as version 128, presumably the Extended Support Release of Firefox 128. Could you open the Troubleshooting Information page and grab your precise version and build number from the first table? See: Use the Troubleshooting Information page to help fix Firefox issues. For reference, the current version in the series is 128.10.0esr.

Now, for comparison:

To see what Firefox thinks you were using before, on the About Profiles page, use the Open Folder button for the root directory of your old profile. The compatibility.ini file in that folder should list the last-used version of Firefox. Was it also in the 128.x.x series?