CAVS Outlook 2003 - CavEmSrv.exe hang

When startig downloading or sending emails with MS Outlook 2003 from/to POP3 account the process CavEmSrv.exe goes to 100% and system hangs. The more emails are to download the longer the system hangs.

I have this problem is since CAVS 1.1, I really hoped this will be fixed in the 2.x version.

Is there any solution for this?

I really like CAVS but I can’t activate the email scan because of this problem!

Exactly the same problem for me,
with the incoming email checked off I get my 20 or 30 emails in 20 seconds . then with email scaning on, It takes 20 minutes or more. task manager shows CavEmSrv is at 99%, and nothing else will take any percentage, is there anyway I can put this at a lower hogging rate. I love the product & I know its free, but if I cant scan my incomming email then it sort of defeats the whole purpose for me.
thanks folks, even any work arounds would be helpful.
any ideas???

oops my bad, I have an earlier version , soo ooo ooo
I’ll look elsewhere on this board, or should I get the beta version?
thoughts? anyone??

I would highly recommend you try the latest beta. I have used all of the beta versions so far and this latest one is excellent. The HIPS function is superb and virus detection rate for the new beta appears to be top notch.

When you can get it to run virus detection. (:TNG)

The Outlook issue is being worked on. The current Beta ( has improved logging for the email scanner, and test files are being submitted so that they can resolve it.

I suffer from that malady as well… :wink: and am helping the developers all I can, to resolve it.

As long as you have the on-access scanner enabled, that should catch any nasties that might want to activate & run from your email, if Outlook hasn’t already blocked them permanently (along with all the good things you want…).

Stream of consciousness… now that I think about it, I wonder if Outlook’s built-in attachment blocker protocol has something to do with this. Since MS states that there are no more email viruses transmitted thru Outlook since they blocked everything (with no user control), I wonder if that’s somehow interfering with the AV scan… :THNK


Hi Little Mac,

I have heard that Microsoft, McAfee and others have stated that email scanning is not necessary with Outlook. However, on my home pc where I use a POP3 server I found that your tip of skipping Comodo Firewall advanced security checks for CavEmSrv.exe speeded my email delivery considerably.

Still no joy with my other test system using exchange server though!


On the subject of email scanning: for anyone concerned that they can’t get it to work with CAVS below are some comments from Microsoft:

Viral Irony: The Most Common Cause of Corruption
When encountering the symptoms of DBX corruption, many people immediately fear that their computer is infected with a virus. As surprising and ironic as it may seem though, the most common cause of DBX corruption is not a virus, but rather anti-virus programs that are configured to scan incoming or outgoing e-mail. Even the most well-known anti-virus programs have exhibited this problem from time to time. To lessen the risk of such corruption you should disable the e-mail scanning module in your anti-virus program. This is usually easy to do by looking at the user-configurable options in the anti-virus program. It is not at all necessary to scan e-mail for viruses to protect your computer.
Now before you dismiss me as mad, let me explain why e-mail scanning is unnecessary. Almost every anti-virus program for Windows installs by default a system scan that runs in the background every time Windows starts. This scan is necessary to protect your computer. If you receive a virus in an e-mail attachment, the virus cannot do anything at all until you actually open the attachment. At that time Outlook Express extracts the attachment from the message and saves it to the Temporary Internet Files folder on your hard disk and attempts to open the file. And it is precisely at that moment that a background system scan will detect the virus, provided it is able to do so, and stop the virus from executing. The system scan will usually delete the infected file from the Temporary Internet Files folder, or else move it to quarantine. To remove the infected e-mail message in Outlook Express, simply hold the Shift key while you press the Delete key. That’s all it takes to keep your computer safe, both from e-mail viruses and e-mail anti-virus scanners. Scanning e-mail as it arrives therefore adds nothing to your level of protection. It might indeed make you feel more protected, but that feeling is an illusion. If the system scan is unable to detect the virus, the e-mail scan will fail to do so also.