KB 3063843 contains a leak fix and a cleanup utility that removes leaked WNF state registrations. Such registrations cause delayed user logons on Windows 8.1 or Windows Server 2012 R2, or you receive "0x800705AA" error when you use an app.

Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features. Select the Download button on this page.

If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track. Run the System File Checker tool (SFC.exe)

Fixes an issue in which the Windows Explorer process stops responding because of the NetworkItemFactory.dll component. This issue occurs on a computer that is running Windows 7 SP1 or Windows Server 2008 R2 SP1.

1. Make sure you have the latest updates for Windows and device drivers. 2. Restart your PC and open only the apps you need. 3. Use ReadyBoost to help improve performance. 4. Make sure the system is managing the page file size. 5. Check for low disk space and free up space. 6. Adjust the appearance and performance of Windows. 7.

In the search box on the taskbar, enter device manager, then select Device Manager. Select a category to see names of devices, then right-click (or press and hold) the one you’d like to update. Select Search automatically for updated driver software. Select Update Driver.

1. Check your speaker output. 2. Run the audio troubleshooter. 3. Verify that all Windows Updates are installed. 4. Check your cables, plugs, jacks, volume, speaker, and headphone connections. 5. Check sound settings. 6. Fix your audio drivers. 7. Set your audio device as the default device. 8. Turn off audio enhancements. 9. Restart Audio Services

This article describes an issue that occurs when you use FSRM (File Server Resource Manager) GUI to configure FSRM in Windows Server 2012 R2. You can fix this issue by using the update in this article.

Describes the issues that are resolved in the October 2012 cumulative update package for Lync Server 2010, Web Components Server.

Update package installation information. To install this update package, install the KB2571547-x64-WebComponents.msp package on computers in a network that are running the following platforms: Lync Server 2010 - Standard Edition. Lync Server 2010 - Enterprise Edition - Front-end.