Mozilla VPN is currently experiencing an outage. Our team is actively working to resolve the issue. Please check the status page for real-time updates. Thank you for your patience.

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.

Avatar for Username

ابحث في الدعم

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

This thread was archived. Please ask a new question if you need help.

launching firefox causes a malformed file error regarding install.rdf.

  • 1 (رد واحد)
  • 151 have this problem
  • 1 view
  • آخر ردّ كتبه Ricmacas

teahouseart
teahouseart
more options

malformed file error message is displayed when firefox is launched. message says could not install this item. install.rdf is not well formed or does not exist.l

malformed file error message is displayed when firefox is launched. message says could not install this item. install.rdf is not well formed or does not exist.l

All Replies (1)

Ricmacas
Ricmacas
more options

This happens because you have a malformed addon trying to install. 1) Go to Tools-> Addons, select the Installation panel, if it exists, and cancel any ongoing addon installations. Restart. Problem should be solved.

OR

2) If the Installation panel does not exist, disable every extension and restart. The problem should be gone. If you want any of the addons, enable one-by-one and restart until the problem comes back. As soon as it comes back, proceed to disable the last extension you enabled and to enable all the other extensions.

One of these should work.