HI,

Check this

Methods for uninstalling Symantec Endpoint Protection

Uninstall options include:

• Client uninstall (including remote uninstalling of large groups)
• Removing specific client components
• Symantec Endpoint Protect Manager (SEPM) uninstall
• What to do when conventional uninstall methods fail: Cleanwipe, manual removal methods
• Mac client uninstal

http://www.symantec.com/business/support/index?page=content&id=TECH184988

How to uninstall the Symantec Endpoint Protection Client using the Microsoft Installer (MSI) command line interface

http://www.symantec.com/business/support/index?page=content&id=TECH102470

SEP client remove for add/remove program.

Or

How to manually uninstall Symantec Endpoint Protection client from Windows Vista, Windows 7, and Windows 2008 32-bit

Either manual or clean wipe

Hello,

To understand the Root cause in your case, I would suggest you to pick 1 of the client machines and uninstall SEP components 1 after another from the Add / Remove Programs.

Control Panel >> Add/ Remove Programs >> Symantec Endpoint Protection >> Modify

This is to understand which component is causing this issue to occur and also keep the SEP protection on the laptops at the same time.

In case you want to uninstall SEP completely, then you may take either of the 4 ways.

1) Uninstall from Add /Remove Programs

2) Uninstall Manually

3) Symantec CleanWipe for SEP 12.1

4) SEPUninstaller (available in Tools DVD \NoSupport\SEPUninstaller

Hope that helps!!

John,

Remove the application and device control component only. This may be the likely cause. Same issue here, removed ADC, everything than worked fine.

Hi,

I understand that you have issues in connecting to VPN. Did you try disabling NTP and check? If you are not able to disable NTP then goto Add/ Remove Programs -> Symantec Endpoint Protection -> Modify  and remove NTP componenet alone on one machine and check.