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I've just updated a Windows Vista machine to Service Pack 1. Subsequently, I upgraded the previously disabled Norton Internet Security 7 (expired) to Norton Internet Security 2012.

On reboot I get a consistent blue-screen, caused by SYMTDI.SYS that says, DRIVER_UNLOADED_WITHOUT_CANCELLING_PENDING_OPERATIONS. How can I clear this up?

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See… and… for similar issues – David Fraser Mar 6 '12 at 16:08
You could/should have run the Norton Removal Tool - it often clears up errors caused by uninstalling Norton programs. Upgrading with a large version difference is essentially uninstalling and reinstalling. – Bob Mar 6 '12 at 16:30
You really should install Service Pack 2 also. – Ramhound Mar 6 '12 at 18:17
up vote 2 down vote accepted

I found SYMTDI.SYS in C:\Windows\System32\drivers by booting up in the restore mode, going to advanced system recovery options, and launching a command prompt. I renamed it to SYMTDI.BAK and rebooted successfully

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So, this may disable some functionality, but at least the system boots and seems to function OK – David Fraser Mar 6 '12 at 16:21
The file in question is Symantec’s device driver. There is an exploit in versions from 2005-2006 in a report I found from 2007. You really should be using Visa Service Pack 2. Be sure you clean the previous installation out before trying install the new version of Norton/Symantec – Ramhound Mar 6 '12 at 18:21 apparently it crashes things on XP a lot, only one or two reports from vista. many people argue that its a part of Symantec or Norton. One guy says it crashes every dell he's tried it with. And they say malware sometimes uses the name. You can scan it at: assuming you can find and copy it. Bottom line seems to be (based on reports) that switching to a different antivirus (Microsoft Security essentials Avast, AVG and ClamWin are some free options). If you can boot up in safe mode and uninstall Norton.?

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