Win7 How to clean WinSxS

1, the first is to download the KB2852386 Patch: (Because the update is marked as "important", not "critical" level, users need to manually download the offline installation package. )

2. Reboot your computer.

3. Start the Disk Cleanup Wizard. To do this, use one of the following methods: Method 1: Click to start typing cleanmgr in the Start search box, and then click OK. Method 2: Click Start, All Programs, attachments, System Tools, and then click Disk Cleanup.

4, select the Win7 system drive, and then click OK. (usually "C:") Note this may take several seconds because the Disk Cleanup Wizard searches for files on the drive that you want to clean.

5. If you do not see the Windows Update Cleanup option on the Disk Cleanup tab, click to clear the system files. If the Windows Update cleanup option appears on the Disk Cleanup tab, go to step 5. Note The Windows Update cleanup option is available only if you are logged on with administrator privileges.

6, select the Win7 system drive, and then click OK. On the Disk Cleanup tab, select Windows Update Cleanup, and then click OK. Note The Windows Update cleanup option is selected by default.

7, a dialog box appears, click Delete File. The cleanup process may be a few minutes to a few 10 minutes, please do not suddenly power off the source, after the cleanup you will find that your WinSxS folder significantly smaller a lot. Attachment: WinSxS use Win7 has a WinSxS directory for storing windowsupdate backup files after installation. When Microsoft designs and develops Win7, users have the option to remove the backup files that clean up obsolete windowsupdate that are not needed in all directories whenever a new ServicePack service pack is released. But the problem is that Microsoft offers only one Service Pack upgrade package, WIN7SP1, for the 2009 issue of Win7. After the release of SP1, Microsoft never planned to release the second edition of the SP service pack. means that the WinSxS directory has been affected by WindowsUpdate backup files for more than two years, including security updates released prior to this week. So in this month's Tuesday patch day, Microsoft did not release a complete ServicePack service upgrade package, but instead released an update to clear obsolete windowsupdate backup files stored in the WinSxS directory after Win7 SP1.