Firefox issue.

Oct 29, 2025 Last reply: 8 months ago 10 Replies

Firefox is unable to load following a couple of local 11kV outages.



Symptom *couldn't load xpcom*



Any suggestions for the inexpert user?



Re-stating PC does not fix it. I have a W11 repair disc if useful.



Reinstall firefox, no need to unistall first, obviously you'll have to use a n other browser to download the installer, unless it's still in your downloads folder ...

OK Andy. I have Chrome and Edge.

Thanks

-- "Strange as it seems, no amount of learning can cure stupidity, and higher education positively fortifies it."

- Stephen Vizinczey

"This issue would normally be fixed with a clean reinstall that involved deleting the Firefox program folder.

(64-bit Firefox) "C:\Program Files\Mozilla Firefox\" (32-bit Firefox) "C:\Program Files (x86)\Mozilla Firefox\"

An error message about XPCOM missing or about platform version usually happens because of 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 to ensure that all files are replaced. You may have to disable security software temporarily in case the problem persists. "

OK now. Curiously T Bird not displaying your offering.

ok from a command prompt:

winget install Mozilla.Firefox.en-GB

(assuming you want the English UK version)

(also available from MS Store)

Because he posted it *after* the sig separator ("-- ") - so TB strips it when quoting the content of the message only.

-- Cheers,

John.

/=================================================================\ | Internode Ltd -

formatting link
| |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \=================================================================/

"Save As" "EML" and you can read the text in Notepad.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Xref: feeder.eternal-september.org uk.d-i-y:1313186

--- <=== I changed this "Strange as it seems, no amount of learning can cure stupidity, and higher education positively fortifies it."

- Stephen Vizinczey

"This issue would normally be fixed with a clean reinstall that involved deleting the Firefox program folder.

(64-bit Firefox) "C:\Program Files\Mozilla Firefox\" (32-bit Firefox) "C:\Program Files (x86)\Mozilla Firefox\"

An error message about XPCOM missing or about platform version usually happens because of 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 to ensure that all files are replaced. You may have to disable security software temporarily in case the problem persists. "

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Paul

OK Paul.

I could read the message but TNPs response was not displayed when I answered.

A new Firefox install fixed it.

All well now except gmail is still rejecting my mails. I'll give it a few more days and then raise a ticket with Namesco.

Do you have all your anti-spoofing set ?

IIRC you need to frig with your DNS if not sending via gmails own smtp server...or a 'well known ' one...

so that e.g. SPF: if gmail gets a message from an SMTP server on

224.20.136.5...from someone allegedly ' snipped-for-privacy@nonesuch.com' it can look up nonesuch.com DNS which will confirm that 224.20.136.5 is a valid SMTP server for the domain...

Or you can set a DKIM public key that gmail can compare with a private key in your email..

etc. etc.

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