When opening the quarantine from the Symantec Endpoint Protection Client interface it generates the error:
Symantec Endpoint Protection: SymCorpUI.exe - Application Error
The exception of unknown software exception (0x40000015) occurred in the application at location 0x6b1a20e8. Click Ok to terminate the program
Unable to open the quarantine interface.
A large number of files are located in the quarantine directory
The system has quarantined a large number of files in the following location: C:\Documents and Settings\All Users\Application Data\Symantec\Symantec Endpoint Protection\Quarantine
A large number of quarantined files could indicate that an unknown threat is downloading known threats to the system. To confirm that there is not an undetected threat check for suspicious files in the Load Point Diagnostic Utility report.
For information on how to obtain and use the Load Point Diagnostic Utility please refer to the following document:
Using the Load Point Diagnostic Utility