Hello,
I would not recommend Windows Cleanup Utility as it is no more Supported by Microsoft. Microsoft has removed the Windows Installer Cleanup utility from its Download Center because it was discovered this tool could damage some components of the operating system installed on the computer.
Microsoft replaced the Windows Installer Cleanup with other tools, an example is the article How do I uninstall Office 2003, Office 2007 or Office 2010 suites if I cannot uninstall it from Control Panel? replaced the previously published under Q290301.
For Symantec CleanWipe Utility for SEP 12.1, I would request you to Create a Case Online OR Call Symantec Technical Support -
For Creating a Case online, check these Articles:
How to create a new case in MySupport http://www.symantec.com/docs/TECH58873
How to Create and Validate a SymAccount for using Symantec's MySupport
http://www.symantec.com/docs/HOWTO31127
How to update a support case and upload diagnostic files with MySupport
http://www.symantec.com/docs/TECH71023
and here are the 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_techsupp_static.jsp
Hope that helps!!