Symantec is showing this notification: [SID: 28239] System Infected: Fake Plugin Activity 2 attack blocked

[SID: 28239] System Infected: Fake Plugin Activity 2 attack blocked. Traffic has been blocked for this application: \DEVICE\HARDDISKVOLUME3\PROGRAM FILES (X86)\GOOGLE\CHROME\APPLICATION\CHROME.EXE

One of my client is experiencing this issue when using browsers either Chrome or IE, and it keeps popping up when trying to use internet which preventing him to browse because it's being blocked by Symantec AV. Need assistance about this issue and how to fix this for a total removal.

Thanks and regards.