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On Windows XP 32 bit OS repeated attempts to do clean re-install but crash report warning always comes up and I can't enter safe mode

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  • 4 have this problem
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  • Last reply by FredMcD

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only clue to this was at the same time Microsoft Security Essentials would not scan and the firefox crash page showed up. I uninstalled Microsoft Security Essentials completely and did a clean re-install of Firefox but i keep getting crash immediately when i try to start firefox. holding shift and trying to start does the same thing.

All Replies (12)

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Yes and crash reporter comes up immediately when i go to start firefox

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Do a malware check with several malware scanning programs on the Windows computer.

Please scan with all programs because each program detects different malware. All these programs have free versions.

Make sure you update each program to get the latest version of their databases before doing a scan.

You can also do a check for a rootkit infection with TDSSKiller.

See also:

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Jsr7711 said

FredMcD said
See if this works; https://ftp.mozilla.org/pub/firefox/releases/45.9.0esr/

i could not find a setup file in the earlier version zip file.

Rather than use a ZIP file, look in the relevant language/locale folder for the EXE installer. For example, for 32-bit Windows, US English:

https://ftp.mozilla.org/pub/firefox/releases/45.9.0esr/win32/en-US/

If you prefer a different language/locale, click up a level (the .. link) and look for your language code. If in doubt, check your URL while you're using the support site, and it should be in there just after support.mozilla.org.

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That was helpful to have the .exe but still same problem with that version.

It took me awhile to figure out the sfc. for anyone following this thread, i got it to work by going to the start box and typing cmd to get the windows box. Then I typed sfc/scannow without the .exe (that was hard to figure out for me) After running the sfc nothing was found

And i ran adware cleaner, malware bytes but still have to check out the others.

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I went down the entire list provided by Fred for adware, I ran everyone that would run on an XP machine.

I ran sfc again with nothing found wrong.

This is such a baffling thing. I still get the crash reporter when attempting to start firefox

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I was looking at the crash report which I posted earlier and I see something interesting. One line says "BlockedDllist". Could this mean somehow within windows a DLL was blocked? I have looked at the anti-virus programs and there is nothing spefically blocking firefox, but could there be something buried with Windows that possible Microsoft Security Essentials would have blocked. I have heard of Blocked Dll's but i have no way of knowing where to find where that is done or how it can be unblocked. Any ideas? Continued Thanks

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Note that you should leave a space between sfc.exe and the /scannow command line switch.

After the cmd.exe prompt, type: sfc.exe /scannow and press Enter

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Hi cor-el, interestingly at the dos prompt i just type sfc/scannow and it begins to work and I see the scan window. No exe or no spaces. Leaving the space merely lists out the switches available with sfc but takes no action. sfc/scannow actually begins the scan. I have replicated this several times. it will also work with sfc.exe/scannow .

Though the scan consistently shows no errors, the dos window will not close without a forced close.

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The DOS command window will not close until you type Exit.


I created a Dos batch program to run SFC for me. Its name is; sfc scannow - Shortcut ===Run As Administrator===.bat

C:\Windows\System32\sfc.exe /scannow Pause exit

Pause keeps the Dos window from closing until you want it to.

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