Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

XML parsing error: undefined entity

  • 1 odgovor
  • 1 ima ovaj problem
  • 1 view
  • Posljednji odgovor poslao cor-el

more options

XML parsing error: undefined entity Address: chrome: //browser/content/browser.xhtml Line 744, character 15:

                      <toolbarbutton id="UITourTooltipClose" class="close-icon"
</pre>

^

Hi, guys Get this message in pop-up window. How can I fix it?

XML parsing error: undefined entity Address: chrome: //browser/content/browser.xhtml Line 744, character 15: <toolbarbutton id="UITourTooltipClose" class="close-icon" --------------^ Hi, guys Get this message in pop-up window. How can I fix it?
Priloženi snimci ekrana

Izabrano rješenje

This can be caused by a failed Firefox update that left you with a mixture of old and updated files in the Firefox program 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 can 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.


You can create a new profile as a quick test to see if your current profile is causing the problem.

See "Creating a profile":

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

Pročitajte ovaj odgovor sa objašnjenjem 👍 1

All Replies (1)

more options

Odabrano rješenje

This can be caused by a failed Firefox update that left you with a mixture of old and updated files in the Firefox program 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 can 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.


You can create a new profile as a quick test to see if your current profile is causing the problem.

See "Creating a profile":

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.