https://support.microsoft.com/en-us/kb/3050265
Fixes included in this update
- This update addresses an issue in which system performance can be decreased during scans. This issue has the greatest effect on computers that have a small amount of physical memory.
- This update addresses an issue in which Windows Update scans can fail and generate a 0x8007000E error.
- General improvements are made to support upgrades to a later version of Windows.
Prerequisites
To install this update, you must install Service Pack 1 for Windows 7 or Windows Server 2008 R2.
This update is incompatible with Windows Server Update Services (WSUS) servers without the hardening update 2938066.