Den här webbplatsen har begränsad funktionalitet medan vi utför underhåll för att förbättra din upplevelse. Om en artikel inte löser ditt problem och du vill ställa en fråga har vi vår gemenskap som väntar på att hjälpa dig på @FirefoxSupport på Twitter, /r/firefox på Reddit.

Sök i support

Akta dig för supportbedrägerier: Vi kommer aldrig att be dig att ringa eller skicka ett sms till ett telefonnummer eller dela personlig information. Rapportera misstänkt aktivitet med alternativet "Rapportera missbruk".

Läs mer

Windows 7, FF 18.0.1 "NSSUTIL_EscapeSize couldn't find in dll nssutil3.dll" then "Could not load XPCOM" help please

  • 6 svar
  • 5 har detta problem
  • 3 visningar
  • Senaste svar av cor-el

more options

The problem doesn't resolve, I then re-install 17.0.1 and works fine. Have tried this install with 18.0 and 18.0.1 same results

The problem doesn't resolve, I then re-install 17.0.1 and works fine. Have tried this install with 18.0 and 18.0.1 same results

Ändrad av DGB

Alla svar (6)

more options

Do a clean reinstall and delete the Firefox program folder before reinstalling a fresh copy of Firefox.

  • (32 bit Windows) C:\Program Files\Mozilla Firefox\
  • (64 bit Windows) C:\Program Files (x86)\Mozilla Firefox\

Download a fresh Firefox copy and save the file to the desktop.

Uninstall your current Firefox version, if possible, to cleanup the Windows registry and settings in security software.

  • Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you will also lose your personal data like bookmarks and passwords from profiles of other Firefox versions.

Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.

Your bookmarks and other profile data are stored in the Firefox Profile Folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.


more options

I followed the steps you have suggested, when I started FF 18.0.1 I still received the error "Could not load XPCOM". I reran this process to delete and remove FF 18, then ran Malwarebytes, no problems found, and cleaned the registry, then reinstalled FF 18. again the error "Could not load XPCOM" appeared again. I have reverted back to FF 17. Any other ideas to resolve this?

Thanks

more options

You did delete the Firefox program folder, because such issues are usually caused by a failed update to some files?

more options

Yes I deleted the Firefox program directory as per instructions. I think I will try a custom install and select a different directory for the program installed location.

more options

I just installed Firefox 18.0.1 in a different directory and Firefox now starts error free. Thanks for your support cor-el your input lead me to the solution,

more options

You're welcome