The security certificate for a toolbar in Firefox, I installed has expired. The error code in the popup is 'sec_error_expired_certificate '.

When the pop-up appears you have two choices: 'View certificate' and 'Cancel '. 'View' allows you to see the certificate expired (not very useful). 'Cancel' makes the popup go away and then returns immediately. It is not possible try to go into the settings. Essentially, this made unnecessary FireFox. The only way to close the program is via the Task Manager

I can't say what version of FireFox that I use, but an update has been installed recently. The pop up window error is called "secure connection failed".

You can try to start Firefox in Mode safe. Here is a description:
http://support.Mozilla.com/en-us/KB/safe%20Mode

Looks like you won't be able to use the shortcut in the menu, but you should be able to use the command line option to start in safe mode ("firefox-safe-mode" at the command prompt).

Tags: Firefox

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    2009-12-06 17:05:17:430 376 4 c 0 report REPORT EVENT: {1B2F2AC2-AFAA-4693-A256-E59B96A868CA}-2009-12-06 17:05:10:067 - 0500 1 182 101 {9BD35FB2-8618-4F00-B75D-DFD8D7E93278} 100 80070643 AutomaticUpdates error content install Installation error: Windows failed to install the following update with error 0 x 80070643: update for Microsoft XML Core Services 4.0 Service Pack 2 for x 64 systems (KB973688).
    2009-12-06 17:05:17:430 376 f00 to THE > # RETURN # to THE: download the update [UpdateId = {9BD35FB2-8618-4F00-B75D-DFD8D7E93278}, successful]
    2009-12-06 17:05:17:446 376 f00 in THE #.
    2009-12-06 17:05:17:446 376 f00 to # END # in THE: download updates
    2009-12-06 17:05:17:446 376 f00 in THE #.
    2009-12-06 17:05:17:446 376 f00 phase of installation to THE adjustment to THE planned at 2009-12-07 08:00
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    2009-12-06 17:05:17:477 376 4 c 0 CWERReporter::HandleEvents - WER report upload report completed with status 0 x 8
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    TIP: Read the Symptoms section of http://support.microsoft.com/kb/973688.

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    =====================================
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