This problem is caused by debug settings added to the Windows registry by the Symantec Endpoint Protection (SEP) client installer. These debug settings cause the ccSvchst.exe process to generate memory dumps when it encounters handled exceptions. These dumps are not generated by a process crash.
This problem is fixed in Symantec Endpoint Protection (SEP) 12.1.6 (RU6). To obtain the latest version of SEP, see Download the latest version of Symantec Endpoint Protection.
To work around this problem until you can upgrade, manually disable SEP clients from generating memory dumps.
HKEY_LOCAL_MACHINE\SOFTWARE(\Wow6432Node)\Symantec\Symantec Endpoint Protection\CurrentVersion\Common Client\Debug\CrashHandler(
HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\Symantec Endpoint Protection\CurrentVersion\Common Client\Debug\CrashHandleron32-bit Operating Systems)
Note: After migrating or working around the problem, you will need to remove the .dmp files already on the computer.