Hello,
What version of SEP client are you currently runnning?
Could you try Disabling the UAC account in control panel and restart the machine and check again.
If that does not help, I would suggest you to follow the Manual Uninstall Procedure.
Check this Article:
Manual uninstall documents for Symantec Endpoint Protection
http://www.symantec.com/docs/TECH164769
With recent launch of Symantec Endpoint Protection 12.1 RU3, there is a latest version of CleanWipe 12.1.3001.165_RU3_RTM.CleanWipe.zip which is now available with Symantec Technical Support.
You may need to contact Symantec Technical Support and create a case for Latest CleanWipe Tool.
Check these Steps below:
How to create a new case in MySymantec
http://www.symantec.com/business/support/index?page=content&id=TECH58873
Phone numbers to contact Tech Support:-
Regional Support Telephone Numbers:
- United States: https://support.broadcom.com (407-357-7600 from outside the United States)
- Australia: 1300 365510 (+61 2 8220 7111 from outside Australia)
- United Kingdom: +44 (0) 870 606 6000
Additional contact numbers: http://www.symantec.com/business/support/contact_t...
Hope that helps!!