Vengine64.DLL causes APP Crash of Windows Explorer. You cannot open a folder view, Control panel etc. I had to remove the Comodo Verification Engine Folder containing Vengine64.DLL before windows would operate normally - be warned.
Windows 7 64 bit. CVE version 2.7.0.37
Same problem here. Even disabling VE as suggested by IE9 did not make any difference. Had to uninstall VE which worked for my Windows 7 64 bit system but still did not work for my Windows 32 bit system. I had to use system restore for that one, uninstall VE then reload IE9.
Had to use command line to delete the folder and DLL file before I could open control panel to uninstall.
I would suggest you uninstall Verification Engine with a third party tool like iobituninstaller.
[i]http://www.iobit.com/advanceduninstaller.html[/i]
Then use autoruns.exe and search for and delete all entries containing “vengine”.
[i]Microsoft Learn: Build skills that open doors in your career
Hi SivaSuresh,
This is quite an old thread
Several threads were already created here related to the said problem, say :
Interesting thing is that 3rd party uninstaller (I tried Revo) may not help. See the subsequent link:
What I meant - it may happen – just manual uninstall (removing folders and Registry leftovers) may work , but if Iobit Uninstaller suggested will do the job – fine, despite my doubt(s) 
Anyway since the initial poster did not reply since I hope he/she read all the above and solved the problem
, which is reflecting part of what I was writing in the referred thread about uninstaller’s failure and manual cleaning procedure
Cheers!
Hi All
I have found a solution to the error and a fix that worked for me.
Restart your machine, then boot it in safe mode (F8 on my machine just after POST)
** TIP **
Save this to your desktop BEFORE you restart so you have a copy of it to hand, you can also start in Safe mode with network support and bookmark this page.
Press the WIN key + the R key you will get the CMD dialogue box, copy and paste this
regsvr32.exe -u “C:\Program Files\Comodo\VEngine\VEngine.dll”
where the “C:\Program Files\Comodo\VEngine\VEngine.dll” is change to suit your machine, with machines that are 64 bit you are going to need to alter the line as the files exist in both you c:\Program Files AND your C:\Program Files (x86) folders
Here are the lines i used to clear the DLL
regsvr32.exe -u “C:\Program Files (x86)\Comodo\VEngine\VEngineIE32.dll”
regsvr32.exe -u “C:\Program Files\Comodo\VEngine\VEngineIE64.dll”
For each of the lines you should get a success message.
Reboot your machine once complete.
Your machine will work again.
Hope this helps you all.