Old date definition is fixed. Now my target is to match the install count perfect with my office Assets.

how to find the non antivirus system for install it?

There is a Find unmanage computer tab in Client group to find the client where sep not install or unmanage.

Edit

How to install clients using "Find Unmanaged Computers" in the Symantec Endpoint Protection Manager

What does it mean to set a client as an Unmanaged Detector?

Best Practices: When to use the "Find Unmanaged Computers" or "Unmanaged Detector" features in Symantec Endpoint Protection 11.0

There are two ways to find out if an unmanaged computer is discovered using the Unmanaged Detector feature.
 

• Configure a notification

1. Open and login to the SEPM
2. Click Monitors
3. Click Notifications
4. Click Notification Conditions
5. Click Add
6. Select Unmanaged computers

• Alternately, select the Home tab to view the Dashboard page of the SEPM. Click the "More Details" link on the "Security Status" alert,

then examine the "Unknown Device Failures"

http://www.symantec.com/business/support/index?page=content&id=TECH104897&locale=en_US

Configure unmanaged detector..

Configuring a client to detect unmanaged devices

http://www.symantec.com/docs/HOWTO80763

What does it mean to set a client as an Unmanaged Detector?

http://www.symantec.com/docs/TECH183746

"How to..." Series for Symantec Endpoint Protection - Part 1

https://www-secure.symantec.com/connect/articles/how-series-symantec-endpoint-protection-part-1#4) How to ......Enable Unmanaged Detector in SEP 12.1

Hope that helps!!

Configure the unmanage detector to detect the clients where sep not avaialble and deploy it with Migration and deployment Wizad.

How to Deploy Symantec Endpoint Protection to your client computers using the Migration and Deployment Wizard.

Hi,

Configure unmanaged detector to find machines where SEP is not installed.

NOTE: In order to act as an unmanaged detector, SEP clients must have Network Threat Protection (NTP) enabled and be in Computer Mode. User Mode clients or clients without the firewall component (NTP) cannot act as unmanaged detectors.

Reference: SEP 12.1 - What does it mean to set a client as an Unmanaged Detector?

http://www.symantec.com/business/support/index?page=content&id=TECH183746

He was able to get this work in user mode...

https://www-secure.symantec.com/connect/forums/unmanaged-detectors-user-mode