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How to Repair the Windows Update Files.

1. Go Start > Run.
2. In the box type REGSVR32 WUAPI.DLL > Enter.
3. A message saying, "DllRegisterServer in WUAPI.DLL succeeded" will appear > OK.
4. Now it is necessary to repeat these steps for each of the following files commands:

REGSVR32 WUAUENG.DLL
REGSVR32 WUAUENG1.DLL
REGSVR32 ATL.DLL
REGSVR32 WUCLTUI.DLL
REGSVR32 WUPS.DLL
REGSVR32 WUPS2.DLL
REGSVR32 WUWEB.DLL

Once finished; since the temporary folder of Windows Update may be corrupted, please carry out the following steps to rename the folder:

1. Go Start > Run > in the box type cmd > Enter.

Type the following command in the open panel.

net stop WuAuServ

( Please Note:[/b] the computer may need to be rebooted before the net stop command will work.)

2. Go Start > Run > type in the box %windir% > Enter.
3. In the opened folder, rename the folder ( by Right clicking) SoftwareDistribution to Sdold.
4. Go Start > Run > type in cmd > Enter. In the open command pane, please type:

net start WuAuServ

Once that’s done, Go Start > All Programs > Windows Updates and see if it will allow their downloading/installation of Windows Updates.

Give it a try and post back with the results.