Hi,

here is the good procedure for you:

How to decrease the number of Content Cache definitions stored on the Symantec Endpoint Protection Clients.

HKEY_LOCAL_MACHINE\Software\Symantec\Symantec Endpoint Protection\Content\{MONIKER.EN_US}
Each moniker should have a "CacheEntries" (DWORD) entry in the registry. This value determines the number of cache entries for that particular moniker.

If the value does not exist a default value of 5 is used.

• • Open the registry
  • Go to the following Moniker {C60DC234-65F9-4674-94AE-62158EFCA433} Key.

HKEY_LOCAL_MACHINE\Software\Symantec\Symantec Endpoint Protection\Content\{{C60DC234-65F9-4674-94AE-62158EFCA433}

• • Locate the CacheEntries and double click on the key
  • Change the CacheEntries key to the desired value (default is 5) .

Note: The changes will not take affect until the next content update from the manager.

Content Information:
{C60DC234-65F9-4674-94AE-62158EFCA433}: SESC Virus Definitions Win32 v11 - MicroDefsB.CurDefs - SymAllLanguages
{1CD85198-26C6-4bac-8C72-5D34B025DE35}: SESC Virus Definitions Win64 (x64) v11 - MicroDefsB.CurDefs - SymAllLanguages
{ECCC5006-EF61-4c99-829A-417B6C6AD963}: Decomposer - 1.0.0 - SymAllLanguages
{C25CEA47-63E5-447b-8D95-C79CAE13FF79}: Symantec Known Application System - 1.5.0 - SymAllLanguages
{812CD25E-1049-4086-9DDD-A4FAE649FBDF}: Symantec Security Content A1 - MicroDefsB.CurDefs - SymAllLanguages
{E1A6B4FF-6873-4200-B6F6-04C13BF38CF3}: Symantec Security Content A1-64 - MicroDefsB.CurDefs - SymAllLanguages
{E5A3EBEE-D580-421e-86DF-54C0B3739522}: Symantec Security Content B1 - MicroDefsB.CurDefs - SymAllLanguages
{CC40C428-1830-44ef-B8B2-920A0B761793}: Symantec Security Content B1-64 - MicroDefsB.CurDefs - SymAllLanguages
{D3769926-05B7-4ad1-9DCF-23051EEE78E3}: SESC IPS Signatures Win32 - 11.0 - SymAllLanguages
{42B17E5E-4E9D-4157-88CB-966FB4985928}: SESC IPS Signatures Win64 - 11.0 - SymAllLanguages
{4F889C4A-784D-40de-8539-6A29BAA43139}: SESC Submission Control Data - 11.0 - SymAllLanguages

Note: The procedures above can also be used to define the number of Content Cache for other signatures.

• Note in {C60DC234-65F9-4674-94AE-62158EFCA433}:
  In Symantec Endpoint Protection 11.0 and MR1, adjust the "CacheEntries" DWORD value to the # of cache content revisions to keep.
  In Symantec Endpoint Protection MR2 and newer, adjust the "CacheEntriesEx" DWORD value to the # of cache content revisions to keep.