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

Avatar for Username

Mozilla 도움말 검색

고객 지원 사기를 피하세요. 저희는 여러분께 절대로 전화를 걸거나 문자를 보내거나 개인 정보를 공유하도록 요청하지 않습니다. "악용 사례 신고"옵션을 사용하여 의심스러운 활동을 신고해 주세요.

자세히 살펴보기

Default Profile stuck on old UI despite being updated to the latest version (Windows 11)

Yash Gandhi (Primary)
Yash Gandhi (Primary)

Hi Mozilla Community,

I am running Firefox on Windows 11 and I'm encountering a strange issue regarding the UI updates.

The Issue: My Firefox browser updates automatically to the latest version. However, my Default Profile is visually stuck on the old UI design. It does not reflect the recent interface changes associated with the update.

The Troubleshooting Context:

  • I have verified that the browser itself is technically updated (via Help > About Firefox).
  • The strange part: I have other Firefox profiles on this same machine. When I launch those profiles, they correctly display the new, updated UI.
  • This issue is isolated strictly to my main/default profile.

Has anyone experienced this mismatch where the version number is correct, but the UI fails to refresh on a specific profile? Is there a specific fix for this?

Thanks in advance for the help.

Hi Mozilla Community, I am running Firefox on '''Windows 11''' and I'm encountering a strange issue regarding the UI updates. '''The Issue:''' My Firefox browser updates automatically to the latest version. However, my '''Default Profile''' is visually stuck on the old UI design. It does not reflect the recent interface changes associated with the update. The Troubleshooting Context: * I have verified that the browser itself is technically updated (via Help > About Firefox). * '''The strange part:''' I have other Firefox profiles on this same machine. When I launch those profiles, they correctly display the new, updated UI. * This issue is isolated strictly to my main/default profile. Has anyone experienced this mismatch where the version number is correct, but the UI fails to refresh on a specific profile? Is there a specific fix for this? Thanks in advance for the help.
첨부된 스크린샷

선택된 해결법

  • I solved it by enabling "Refresh Firefox" from changing "browser.profiles.forceEnableRefresh" to "true" inside "about:config"
  • I copy pasted appropriate data multiple times in new profile
  • After giving multiple tries I came to know that my prefs.js is corrupted
  • My "settings" from sync data is also corrupted
  • so I stopped using older prefs.js & stopped using sync data of "settings"

and my profile works as expected after I use fresh prefs.js & fresh settings

문맥에 따라 이 답변을 읽어주세요 👍 0

모든 댓글 (3)

dessertdish
dessertdish

Hello, Heres some ways to fix corrupted profile data : Clear startup cache : 1. Click the menu button (three horizontal lines) and select Help > More Troubleshooting Information 2. On the Troubleshooting Information page, find the sectionclear startup cache 3. Click Clear startup cache, then click Restart to apply the changes.

Restart in Troubleshoot Mode : 1. Click the menu button and select Help > Troubleshoot Mode 2. In the confirmation dialog, click Restart. 3. If the UI issue is resolved in Troubleshoot Mode, an extension or a custom setting (like those in userChrome.css files) is likely the cause. You may need to disable or update problematic add-ons.

Refresh Firefox : (if all above don't work) 1. Go to Help > More Troubleshooting Information. 2. Click the Refresh Firefox button on the right side of the page. 3. Confirm the action in the pop-up window. Your old profile data will be moved to a folder named "Old Firefox Data" on your desktop as a backup.

  • Keep in mind this wipes all preferences, themes, and passwords.
Yash Gandhi (Primary)
Yash Gandhi (Primary) 질문자

dessertdish said
Hello, Heres some ways to fix corrupted profile data : Clear startup cache : 1. Click the menu button (three horizontal lines) and select Help > More Troubleshooting Information 2. On the Troubleshooting Information page, find the sectionclear startup cache 3. Click Clear startup cache, then click Restart to apply the changes. Restart in Troubleshoot Mode : 1. Click the menu button and select Help > Troubleshoot Mode 2. In the confirmation dialog, click Restart. 3. If the UI issue is resolved in Troubleshoot Mode, an extension or a custom setting (like those in userChrome.css files) is likely the cause. You may need to disable or update problematic add-ons. Refresh Firefox : (if all above don't work) 1. Go to Help > More Troubleshooting Information. 2. Click the Refresh Firefox button on the right side of the page. 3. Confirm the action in the pop-up window. Your old profile data will be moved to a folder named "Old Firefox Data" on your desktop as a backup.
  • Keep in mind this wipes all preferences, themes, and passwords.

as you suggested, I tried clearing restart cache & restarting into troubleshoot mode but it didn't work "Refresh Firefox" button is missing with & without troubleshoot mode

Yash Gandhi (Primary)
Yash Gandhi (Primary) 질문자

선택된 해결법

  • I solved it by enabling "Refresh Firefox" from changing "browser.profiles.forceEnableRefresh" to "true" inside "about:config"
  • I copy pasted appropriate data multiple times in new profile
  • After giving multiple tries I came to know that my prefs.js is corrupted
  • My "settings" from sync data is also corrupted
  • so I stopped using older prefs.js & stopped using sync data of "settings"

and my profile works as expected after I use fresh prefs.js & fresh settings

글쓴이 Yash Gandhi (Primary) 수정일시

질문하기

글에 답글을 달기 위해서는 계정으로 로그인해야만 합니다. 계정이 아직 없다면 새로운 질문을 올려주세요.