KB2468871 System Update Install Error! (error 643)

Anonymous

original title: KB2468871 System Update Install Error!

Ok Now I have tried to install from windows update and manually trying to install this update KB2468871

It is not working and it keeps giving me an error

Error code 643.

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Anonymous

Finally after weeks of frustration I was able to fix this mess, none of the advice microsoft provided worked, uninstalling reinstalling, using microsoft .net removal tool, microsoft fixit, disabling UAC, and numerous other things which did nothing at all.

The source of this problem with KB2468871 is that a .dll needed for it to install is not present for whatever reason, copying and inserting the .dll where it needs to be will allow you to install this update.

Download the KB2468871 update here:

http://www.microsoft.com/download/en/details.aspx?id=3556

Try to install it, so that it extracts the needed .dll

C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Xml.Serialization\v4.0_4.0.0.0__b77a5c561934e089

Go to there and you should see the .dll file "System.Xml.Serialization.dll" If you can't find it do a search for it.

Copy it.

Paste it here C:\Windows\Microsoft.NET\Framework\v4.0.30319

And paste it here:

C:\Windows\Microsoft.NET\Framework64\v4.0.30319

Install the KB2468871 update you downloaded earlier.

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56 additional answers

Anonymous

2011-10-05T15:37:04+00:00

@Richard & anyone else with a similar problem: To avoid confusion, please begin your own, new thread about YOUR specific problem and computer. State your current IE version and full Windows version (e.g., WinXP SP3; WinXP 64-bit SP2; Vista SP2; Vista 64-bit SP2; Win7; Win7 SP1; Win7 64-bit; Win7 64-bit SP1) in your first post. Thank you.
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Anonymous

2011-10-05T09:29:31+00:00

Only KB2539636 and KB2533523 are installed. When I manually try to install KB2487367 it says does not apply or is blocked. Windows update keeps installing KB2468871 and KB2533523 over and over and keeps saying successful, but they are not there when viewed in installed updates
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Anonymous

2011-08-11T22:26:46+00:00

See...

• Error codes 0x80070643 or 0x643 occur when you install the .NET Framework updates

http://support.microsoft.com/kb/976982

...or try running a Repair of .NET Framework 4 per the ANSWER post in this related thread: http://answers.microsoft.com/thread/5b39ddc7-8b23-4459-9bf4-c1e0d6c07437

...or try running the .NET Framework Repair Tool: http://support.microsoft.com/kb/2698555
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Anonymous

2011-08-11T20:51:00+00:00

yes they are all in there, so why wont KB2468871 install>

Question: Is KB2468871 stalling when downloading? If so, cancel and click on download again.

I had the same issue and found Ing. Ladislav Cermak's post. Here you can see the steps I'd taken in order to manually install 3 kb's for netframework.

http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_update/windows-update-fails-to-install-updates-kb2539636/039d7c34-5e25-4cbe-bc47-e0620a6d5b7e?page=5&tm=1313095214466

If you ran a Microsoft Fixit and received error code 2738, use the fixit here then retry the manual install.

http://blogs.technet.com/b/fixit4me/archive/2009/03/31/error-code-2738-when-running-a-microsoft-fix-it-solution.aspx

You may still find the kb in windows update after installing it manually. I went ahead and clicked install. It then recorded success.
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