Where can I get the virus definition update file for Microsoft Security Essential? I want to know the official place for MSE virus definition.
MSE should update them if you click "Update" within the program.
The official place to get these updates is inside Microsoft Security Essentials; there's an easy-to-use update tool here. Alternatively, you can run Windows Update to get the same updates.
Hello, this might help:
How to manually download the latest definition updates for Microsoft ...http://support.microsoft.com/kb/971606
Install the latest Microsoft Security Essentials definition updates