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Error massage: Update XML File Malformed 200.

  • 5 replies
  • 56 have this problem
  • 1 view
  • Last reply by wd1314

Tom49Parrot
Tom49Parrot
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After downloading Fire 3.4.16, I have received a Error massage: Update XML File Malformed 200. I can only do this question by using Windows Internet Explorer. So my logic says it is Firefox software and not my machine. But what? Yours sincerely Derek

After downloading Fire 3.4.16, I have received a Error massage: Update XML File Malformed 200. I can only do this question by using Windows Internet Explorer. So my logic says it is Firefox software and not my machine. But what? Yours sincerely Derek

Chosen solution

There are a few possible causes for that error, for details see https://support.mozilla.com/kb/AUS+Update+XML+File+Malformed+200

Read this answer in context 👍 2

All Replies (5)

TonyE
TonyE
  • Moderator
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Chosen Solution

There are a few possible causes for that error, for details see https://support.mozilla.com/kb/AUS+Update+XML+File+Malformed+200

Tom49Parrot
Tom49Parrot Question owner
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No, as I said in my question I have tried AUS Update XML File Malformed 200 to no avail. When I open Firefox the tabs try to open the web sites but I end up with nothing, but the tab is now 'Untitled'. I have rebooted my machine. I have re-downloaded the update.

jaysp
jaysp
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I too have the same problem. Is there a solution?

I am using an old backup machine to write this as my new machine is useless unless I use IE.

Please help....................


Jay

kpk001
kpk001
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I have a variation of this problem. FF works fine for about a day then can navigate normally (no freeze or errors) but can not connect to anything. When I check for updates the error occurs. Closing and restating FF does not solve the problem (Operates normally but no connections and same error). A machine reboot restore connectivity and the update checker works again.

OS is Win2K and FF ver is 3.6.16. Believe it happened shortly after the upgrade to current version.

wd1314
wd1314
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I have tried everything possible and I still get Update XML file malformed (200). What can I do? I tried to uninstall and then re-install and I still get that msg.