Antivirus antispyware protection not updating
For antimalware and antispyware, the latest definitions are End of life for Microsoft Forefront Client Security was on July 14th 2015.
Customers are encouraged to migrate to System Center Endpoint Protection.
If you want a more recent update (usually uploaded to this page within the last three hours), you can manually download and install it.
If you're using Windows XP, see our Windows XP end of support page.
For a list of the latest updates see the change log.
This page explains how updates work and where to get them.
If you don't already have Microsoft security software, or you want to reinstall it, see our software download page.