WINDOWS EXPLORER HAS STOP WORKING

Question

when i open my computer,window explorer and windows side bar a massage appear on screen that close the programand problem details. Problem signature:Problem Event Name: APPCRASHApplication Name: Explorer.EXEApplication Version: 6.0.6001.18000Application Timestamp: 47918e5dFault Module Name: SHUNIMPL.dllFault Module Version: 6.0.6001.18000Fault Module Timestamp: 4791a7a6Exception Code: c0000142Exception Offset: 00009cacOS Version: 6.0.6001.2.1.0.768.2Locale ID: 13321Additional Information 1: 9d13Additional Information 2: 1abee00edb3fc1158f9ad6f44f0f6be8Additional Information 3: 9d13Additional Information 4: 1abee00edb3fc1158f9ad6f44f0f6be8Read our privacy statement:http://go.microsoft.com/fwlink/?linkid=50163&clcid=0x0409hope u will help me about by problem.. thanks in advance ..