Symantec Antivirus issue

On our school network we use Symantec Antivirus Corporate Edition We run Windows Server 2003 on the server and recently upgraded all of our clients to Windows 7 Pro 32 bit. We push the antivirus from the server to the clients. The push seemed to go well but now whenever someone logs on to a client a message pop up saying that a driver was blocked due to incompatibility. There are actually three messages with the third one identifying the drivers - "Symantec TDI and NDIS drivers are incompatible with this version of Windows." What do I need to do to make this antivirus program work? I have sent several requests to Symantec but have not received a response.

Thank you!

Robert EhingerIT specialistAsked:
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I think the issue is support for Windows 7.  Unfortunately, you will probably need "Symantec Endpoint Protection 11" or above for Windows 7".  The Corporate Edition 10 does not support Windows 7 even though it installs on it.

I'm not sure of the upgrade path.

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To add I would use nonav or scscleanwipe (can't recall if scscleanwipe is just for the server end) to remove from the machines. Use a little lab setup to test  endpoint as its quite different interface and rollout , make sure to stick with 11.06 version upwards as the early versions or endpoint were painful . Link for 12.1 
Symantec Endpoint Protection BLOCKs NETBIOS: Netbios is used for the netlogon service,RPC locator, file and print sharing, fax service, etc...

Any of the services that rely upon Netbios could give you the problem. "A driver can not be loaded". I haven't figured out why that particular error pops up. Before taking an imaged snapshot, make an exception to Netbios, or File and Print sharing on SEP. Then, reboot the computer you are imaging and see if it works for you.
Robert EhingerIT specialistAuthor Commented:
I will be looking at this issue again on Wednesday. I will update the experts after that.
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