Windows 7 Explorer.exe crashes (sometimes) at login

Sometimes when I log in to Windows (7 Ultimate x64) I get an error that explorer.exe has stopped working. When I examine the error all it shows is that ws2_32.dll_unloaded was the faulting module.

I tired running sfc /scannnow but it came back with nothing to report.

How can I further troubleshoot this?

This started happening after doing a system restore and creation of a new Windows Profile.

Thanks
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IT_ServiceAsked:
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Ashok DewanFreelancerCommented:
Also do scan the whole system once with good antivirus , you can use trial version also. fr one time.

check this, not sure but could be due to virus.
http://erlern.wordpress.com/2009/05/06/error-message-appexplorerexe-modnamews2_32dll-fix/

Do scan with newly antivirus for satisfaction.
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Gaurav SinghSolution ArchitectCommented:
use trojan remover, it will fix ur issue
http://www.simplysup.com/tremover/download.html
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Carlisle_AgentCommented:
Is the IE updated? If the above doesn't work, try updating IE or delete the IE9 update going back to IE8. Sometimes, some websites doesn't play well with IE9.
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JasonRuleCommented:
If your just getting the error when you logon and IE is running OK,  just disable error reporting and you won't see the error message.  We had to do this with out Terminal Servers.  We would logon and get the error that IE has encountered an error and needs to close.  But IE ran fine after logging in.  I just disabled error reporting and no more message.
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IT_ServiceAuthor Commented:
This is not iexplore.exe (it's not IE). It's Windows Explorer (explorer.exe). Sometimes the error allows me to click restart and sometimes I have to manually run a new explorer.exe from the task manager to get the desktop icons to appear.

I did run malwarebytes as one of the 1st steps and it came back clean.
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Gaurav SinghSolution ArchitectCommented:
did u try with trojan remover?? as mentioned above post??
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Rob MinersCommented:
It could be caused by a mis-behaving shell extension. Try using ShellExView to disable all shell extensions that are displayed in a light shade of red and then, if the problem goes away, enable a few at a time until you find the culprit.

http://www.nirsoft.net/utils/shexview.html
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IT_ServiceAuthor Commented:
It was a trojan: DOS/Alureon.E

Crazy in that it stuck around even when I reformatted and installed Windows. Seems it can plant itself on a separate partition and then come back to bite you later.

Thanks for the advice.

@systechadmin the tool you suggested stopped explorer.exe from crashing until i uninstalled it, but it did not resolve the issue.
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