Comments on: Firefox Update Error – AUS: Update XML File Malformed (200)

By: Tricia

Tricia — Fri, 14 May 2010 16:38:19 +0000

This did not help me but I will share what did work

Check your Firewall settings it may be set to block everything without asking you first.

Also try to look at the log to see what it has blocked and what programs are listed as trusted and be sure to add it as a trusted program if you can.

Just by disabling it for 5 minutes showed me that’s where the problem was it was not my pc where mine are configured properly so it did not even cross my mind when I was trying to help my Dad that the problem was the firewall.

By: Kenny

Kenny — Tue, 26 Jan 2010 19:08:30 +0000

Thanks, deleting mozilla cookies did the trick.

By: booger

booger — Sun, 23 Aug 2009 18:03:38 +0000

Going to Tools/Options/Privacy/Show Cookies and deleting any and all cookies containing “Mozilla” usually works for me.

By: atep

atep — Sat, 18 Jul 2009 17:42:24 +0000

hate to ask such a simple question, but how do i access my firefox profile folder?

By: wecaz

wecaz — Thu, 16 Jul 2009 20:56:20 +0000

“renaming/deleting of file cert8.db in the folder of my firefox profile fixed this update problem”

Worked like a charm !!

By: George

George — Tue, 14 Jul 2009 16:15:32 +0000

renaming/deleting of file cert8.db in the folder of my firefox profile fixed this update problem

This worked for me as well.

By: Hetti

Hetti — Tue, 16 Jun 2009 18:55:02 +0000

Hi,

renaming/deleting of file cert8.db in the folder of my firefox profile fixed this update problem.

Best regards
Hetti

By: Bren Flibig

Bren Flibig — Thu, 10 Apr 2008 18:37:29 +0000

Well, it’s a hack all right.

“I would propose two methods instead which update Firefox without having to find the error message first.”

That’s about as hackish as you can get. Most of us would prefer to find and fix the CAUSE of the error, so any OTHER errors caused by the same problem will ALSO go away. In general, a reliable computer doesn’t HAVE unexplained, ignored error messages.

“This are only a few of the possibilities and I would like to explain what you can do to fix this issue…You can of course check everything mentioned above”

Well, no you can’t. You just said there’s a large number of possibilities, you listed only a few, and said nothing about how to find OR fix any of them.