If you notice that you are not getting security updates after installing Windows XP Service Pack 3, then you are one of the unfortunate people that got hit by that mysterious bug/behavior of SP3.

Follow these steps to correct this issue.

1. Log on as an administrator, or as a user that has administrator access.

2. Click start, Run, and then type CMD, and then click OK.

3. From the DOS command box, issue the following commands, hitting the enter key after each one.

net stop wuauserv

cd \windows\system32

regsvr32 wups2.dll

net start wuauserv

4. Windows should start receiving Windows updates from now on.

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