Windows Update 646 on KB977304 error code

I downloaded and installed 8 of 9 updates successfully in my computer (which has Windows Vista Home Basic Edition), but the major update of security for Microsoft Works 8 (KB977304) failed, and I got error Code 646, followed of a message "Windows Update has encountered an unknown error.  I tried to download and install the update several times, without success.  Finally, I stopped trying to install the update, as I thought Microsoft would soon find a solution to the problem, and I would be able to install the update at a later date.
 
Out of curiosity, I opened Microsoft Works word processor and clicked on "about Microsoft Works" under the help tab, to see which version of
Microsoft Works was preinstalled on my computer.  I discovered that the Microsoft Works program in my computer is really version 8.5, not version 8 which is shown on the security update!  The difference in the version numbers of the update for Microsoft Works and Microsoft Works program in my computer perhaps the reason why I got the error Code 646, message "Windows Update has encountered an unknown error"?  Janice M. Strunk

Try a direct download of the update:

http://www.Microsoft.com/downloads/details.aspx?FamilyId=807426a1-8b78-4681-A606-dc39f4d7b64a&displaylang=en

Update of security for Microsoft Works 8 (KB977304)

If this does not resolve the issue, read on:

Try this for your error Code 646 and read ALL the messages/solutions to your problem on the link below:

http://social.answers.Microsoft.com/forums/en-us/vistawu/thread/f3390e74-9961-4AAE-8a05-554c1a9cf1a2

Read the info on the above link to error Code 646.

With the compliments of: David_O - Support Engineer

This problem occurs when the agent Windows Update Wups2.dll file is incorrectly registered in the registry. Because registry files that correspond to the Wups2.dll file are missing, update facilities have failed. There are two methods to resolve this issue, use method 1 first, and if it did not resolve your issue, go to method 2

Method 1: Save the Windows Update files

1. click Start and type notepad in the box start the search .

2. click on Notepad in the programs list.

3. copy the following commands, and then paste them into the opened Notepad window:

REGSVR32 WUPS2. DLL/S
REGSVR32 STINKS. DLL/S
REGSVR32 WUAUENG. DLL/S
REGSVR32 WUAPI. DLL/S
REGSVR32 WUCLTUX. DLL/S
REGSVR32 WUWEBV. DLL/S
REGSVR32 JSCRIPT. DLL/S
REGSVR32 MSXML3. DLL/S

1. in Notepad, on the file menu, click on record under.

2. in the list record under , click all files.

3. in the file name box, type register.bat.

4. save the Register.bat file to your desktop.

5 right-click the Register.bat file, and then click run as administrator. Reduce this includes this imageIf you are prompted for an administrator password or a confirmation, type the password or click continue.

6. try to install the updates again.

Method 2: Download and install Windows Update agent

For more information about how to download and install the latest Windows Update agent, click on the number below to view the article in the Microsoft Knowledge Base:

949104

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

If the above does not help:

You will get the best help for any problem of Update/Service Pack update Vista Forum; the link below:

http://social.answers.Microsoft.com/forums/en-us/vistawu/threads

When you repost here, kindly include this error Code, and exactly what is happening when you try to update.

In this way, you will receive the best help.

See you soon.

Mick Murphy - Microsoft partner

Tags: Windows

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