example of blocking msn application , similarly you can use to block the file/application you want

https://www-secure.symantec.com/connect/forums/blo...

https://www-secure.symantec.com/connect/forums/how...

Symantec Endpoint Protection Manager - Application and Device Control - Policies explained

http://www.symantec.com/docs/TECH104431

WhitePaper on Application and Device Control:

http://www.symantec.com/avcenter/security/ADC/Conf...

Best Practices for Deploying Symantec Endpoint Protection's Application and Device Control Policies

http://www.symantec.com/docs/TECH181679

http://www.symantec.com/docs/TECH145973

HI,

You can use ADC Policy.

ADC policy guidance

https://www-secure.symantec.com/connect/forums/how...

http://www.symantec.com/business/support/index?pag...

http://www.symantec.com/business/support/index?pag...

How to Block or Allow Devices in Symantec Endpoint Protection

http://www.symantec.com/business/support/index?pag...

https://www-secure.symantec.com/connect/downloads/devviewer-tool-helpful-application-and-device-control-find-hardware-device-id-and-guid

https://www-secure.symantec.com/connect/downloads/...

https://www-secure.symantec.com/connect/downloads/...

https://www-secure.symantec.com/connect/downloads/...

https://www-secure.symantec.com/connect/downloads/...

https://www-secure.symantec.com/connect/forums/adc-policy

http://www.symantec.com/connect/forums/app-device-control-policy-upgrades

also check this

Find the attach Application and Device Control.pdf, read the same it can help you to create the ADC policy

Hi,

You should learn both the concepts i.e.. Application learning & System lockdown

Application Learning

The Windows Symantec Endpoint Protection client monitors and collects information about the applications and the services that run on each computer. You can configure the client to collect the information in a list and send the list to the management server. The list of applications and their characteristics is called learned applications.

You can use this information to find out what applications your users run. You can also use the information when you need information about applications in the following areas:

Monitoring applications and services that run on client computers

http://www.symantec.com/docs/HOWTO55218

System Lockdown:

Setting up system lockdown

http://www.symantec.com/docs/HOWTO27320

Check this article for more reference:

https://www-secure.symantec.com/connect/forums/sep...

Hello,

You could block an application via Application Control OR via System Lockdown.

For Application Control, check these Articles:

About best practices for creating application control rules

http://www.symantec.com/docs/HOWTO55145

How to configure Application Control in Symantec Endpoint Protection 11.0 : Configuring Application Control Policies

http://service1.symantec.com/SUPPORT/ent-security.nsf/2326c6a13572aeb788257363002b62aa/7049d06ba3c9e86f802573620054d9c2?OpenDocument

How to use Symantec Endpoint Protection to block or log legitimate but unauthorized software usage

http://www.symantec.com/docs/TECH97618

For System Lockdown, please check these Articles:

Configuring system lockdown

http://www.symantec.com/business/support/index?page=content&id=HOWTO55130

About system lockdown

http://www.symantec.com/business/support/index?page=content&id=HOWTO27322

Managing file fingerprint lists

http://www.symantec.com/business/support/index?page=content&id=HOWTO55133

Running system lockdown in test mode

http://www.symantec.com/business/support/index?page=content&id=HOWTO55131

Enabling system lockdown to block unapproved applications

http://www.symantec.com/business/support/index?page=content&id=HOWTO55132

Check this thread: http://www.symantec.com/connect/forums/system-lockdownis-it-working

Monitoring the applications and services that run on client computers

http://www.symantec.com/docs/HOWTO55218

You can use a query tool to search for the list of applications that the client computers run. You can search on application-based criteria or computer-based criteria. For example, you can find out the version of Internet Explorer that each client computer uses.

See Searching for information about the applications that the computers run.

You can save the results of an application search for review.

See Saving the results of an application search.

Hope that helps!!