When you reinstall these days the main Update is SP3.
If this firs part does'nt make sense try the batch File below.
Method 1: Register the Wups2.dll file in Windows
To register the Wups2.dll file in Windows, follow these steps:1. Stop the Automatic Updates service. To do this, follow these steps:a. Click Start, click Run, type cmd, and then click OK.
b. At the command prompt, type the following command, and then press ENTER:
net stop wuauserv
2. Register the Wups2.dll file. To do this, follow these steps:a. At the command prompt, type the following command, and then press ENTER:
regsvr32 %windir%\system32\wups2.dll
Note For a computer that is running Windows XP Professional x64 Edition, type the following command, and then press ENTER:
regsvr32 %windir%\syswow64\wups2.dll
b. Click OK on each verification message that you receive.
3. Start the Automatic Updates service. To do this, type the following command at the command prompt, and then press ENTER:
net start wuauserv
4. Exit the command prompt. To do this type exit, and then press ENTER.
Copy the text between the == signs and paste it in notepad. Save the file to C:\ as UD.bat
Then explore to the C: directory and right mouse click on it and select Open and click on OK when the dll is registered.
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C:
net stop wuauserv
goto ud
:UD
regsvr32 %windir%\system32\wups2.dll
goto ss
:SS
net start wuauserv
goto end
:END
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