If this issue is still persist ; then please follow below TB's :
Update windows ( Make sure windows update is working fine - Shouls update all major update and all optional update's which is related to Operating System ) - Delete temp and cookie's ) - Make sure there is no infection in your computer ( You can run www.mcafee.com/in/downloads/free-tools/stinger.aspx ).
After perfoming above TB's ; check for the issue.
If the issue still persist ; Uninstall all the existing McAfee - Run MCPR for complete removal ( http://download.mcafee.com/products/licensed/cust_support_patches/MCPR.exe ) - Restart the computer - Please delete McAfee folder's manually from Local disk C:/ Program data - Reinstall the McAfee from au.mcafee.com ( No matter were you are from ).
Let us know the outcome .