We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Este fío arquivouse. Faga unha nova pregunta se precisa axuda.

Firefox update failed

  • 1 resposta
  • 2 have this problem
  • 20 views
  • Last reply by cor-el

lbrittner
lbrittner
more options

I updated firefox and when trying to open it received an "EntryPoint Not Found" error.

The procedure entry point sqlite3_backup_finish could not be located in the dynamic link library C:\Program Files\Mozilla Firefox\xul.dll

Click okay then get the message

"couldn't load XPCOM."

It would appear I need to delete firefox and reinstall, unless a method exists to revert.

If I delete and reinstall how do I retain bookmarks, history and open tabs, etc.? I need to keep my tabs, history and bookmarks.

I updated firefox and when trying to open it received an "EntryPoint Not Found" error. The procedure entry point sqlite3_backup_finish could not be located in the dynamic link library C:\Program Files\Mozilla Firefox\xul.dll Click okay then get the message "couldn't load XPCOM." It would appear I need to delete firefox and reinstall, unless a method exists to revert. If I delete and reinstall how do I retain bookmarks, history and open tabs, etc.? I need to keep my tabs, history and bookmarks.
Capturas de pantalla anexas

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

An error message like XPCOM missing or about platform version or entry points not found can happen because of a failed Firefox update that left you with a mixture of old and updated files in the Firefox installation folder. This can happen in case security software was keeping a handle of some of the files in the Firefox program folder preventing Firefox from replacing all the files. You need to do a clean reinstall and remove the Firefox program folder to ensure that all files are replaced. You may have to disable security software temporarily in case the problem persists.

Reinstall Firefox: