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Update KB951847 will not install

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Old 20-02-2009
Posts: n/a
Update KB951847 will not install

I have made repeated attempts to install Windows Update KB951847 (.NET
Framework 3.5 SP1) but the installation fails everytime, with Error Codes
800B0100 and 807000D. Two other less important updates also fail to
install: KB960544 and KB950124. All other updates have installed
automatically with no problem , but the three I have listed fail on
automatic installation and manually.
I have tried all manner of "fixes" which I have found on various forums, but
none has worked.
Does anyone have a fix that will actually work?

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Old 20-02-2009
PA Bear [MS MVP]
Posts: n/a
Re: Update KB951847 will not install

Without knowing which fixes you've tried so far, we'd just be making wild
guesses, wouldn't we?
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Old 20-02-2009
Posts: n/a
Re: Update KB951847 will not install

Not at all, if you have a fix that works, tell me about it and I'll try it.

I didn't want to clog up this forum with a long list of fixes I've tried,
because most of them are already listed somewhere else on this or similar
forums, but, to summarise, I've tried:

Uninstalling .Net Framework 3.5 (that's the only version on this machine)
Reinstalling and then trying to install the 3.5 SP1
Using the the Windows Install Clean Up tool then trying to install the
Using the .Net Framework Setup Cleanup Utility then try to install the
I've tried installing from the Update site and also donwloading directly.
I've tried all of the above with and without Registry Cleaning by RegCure
and with and without rebooting.
... and there are probably a few other things I've tried that have been
suggested from newgoups, but I can't remember the details.

Basically, I've been struggling with this problem for days now and I've lost
count of how many attempts that I've made to sort it, so any help would be
much appreciated.
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Old 20-02-2009
PA Bear [MS MVP]
Posts: n/a
Actually, your use of RegCure may have caused the problem. Think your
Registry needs "cleaning" or "repairing"? Read
aumha.net/viewtopic.php?t=28099 and draw your own conclusions.

Unless you've got usable backups of the changes RegCure made, you may be
looking at a format & clean install,

[Always state your full Windows version (e.g., WinXP SP3; Vista SP1) when
posting to this newsgroup.]

Other than KB923100 (which, according to your earlier reply, you've already
tried), there is no support whatsoever for installing KB951847 other than
from the computer's manufacturer. (You may just want to wing it and "hide"
this update.)

When you try to install an update for the .NET Framework 1.0, 1.1, 2.0, 3.0,
or 3.5, you may receive Windows Update error code "0x643" or Windows
Installer error code "1603":

Strike that second paragraph and see the NOTICE section of KB923100 for
support options. If necessary, tell the tech that you're getting an 0x643
error (which may, in fact, be true).
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Old 21-02-2009
Posts: n/a
Re: Update KB951847 will not install

Perhaps you are right about the Registry Cleaner, but the problem was
happening before I used RegCure and the fixes tried up to then had not
worked. The advice to use RegCure came from a forum member, who found that
it had worked for him - so I tried it.

Since doing so it has had no adverese effect on any application, nor has it
prevented other updates from installing normally, so it seems unlikely that
cleaning the registry - whether a good idea or not - has actually caused my
update problem or added to it.

On a different laptop I had a probem that updates just stopped installing
completely, having worked normally before. That machine was not subjected
to registry cleaning so, clearly, the cause of the problem was elsewhere.
Eventually, I had to resort to a Vista Upgrade reinstallation to overcome
the problem, which many forum members laid firmly at Microsoft's door. I
have the feeling my current problem is of a similar nature.

However, if you have any suggestions to overcome it, other than a
reinstallation, I would be pleased to hear them.
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Old 24-02-2009
Join Date: Feb 2009
Posts: 1
Re: Update KB951847 will not install

In case it helps I discovered that I had uninstalled .net from one machine and yet it still tried to update. I think its detection of what it is upgrading is incorrect. Maybe it just looks to see if the patch is not installed and does not check for the .net version that needs upgrading.

I hadd no .net installed (I guess you could just uninstall).
I reinstalled an older .net and let it upgrade again and it was fine.

Seems it may be quite willing to upgrade something that does not exist or in some cases PCs that may not need upgrading.
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Old 24-02-2009
Join Date: Feb 2009
Posts: 1
I have the same problem. The update was downloaded almost 3 weeks ago and everything I've tried so far has failed (after installing and reverting changes for 40 minutes each time!). I've tried:
* Uninstalling .NET Framework 3.5 and installing the patch
* Uninstalling anti-virus software
* Disabling all startup items
* Disabling all services
* Disabling all non-microsoft services

Nothing's worked so far...
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Old 09-05-2010
Join Date: May 2010
Posts: 1
Re: Update KB951847 will not install

i cant install KB951847 through microsoft..i am not getting any error messages just telling me it can't install..after reading the solutions here yes i am still confused and none the wiser about how i can get this thing to work..help in english that i can understand would be great.
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Old 29-04-2011
Join Date: Apr 2011
Posts: 2
Re: Update KB951847 will not install

I had this issue as well (spent countless hours trying various techniques to get it installed). Environment: XP/32-bit/SP3. I tried above suggestions but still no joy. Here's what worked for me:

1) Download the Stebner .NET Cleanup tool (http://blogs.msdn.com/b/astebner/arc...8/8904493.aspx)

2) Run the cleanup tool and select the option to remove ALL .NET Frameworks.

3) Once tool is complete it should ask you to reboot. So go ahead and reboot.

Note: If you get any errors, also try using the Windows installer cleanup tool: http://www.softpedia.com/get/Securit...shtml...remove all instances of .NET fw. Then re-run the Stebner tool, removing all again. Reboot.

Once rebooted, your PC should now be free of all .NET crap. Phew!

5) Now, download .NET fw 3.0 and install (see: http://www.microsoft.com/downloads/e...displaylang=en)

6) Download and install .NET fw 3.5/SP1 (see: http://www.microsoft.com/downloads/e...-81da479ab0d7).

7) Reboot, even it doesn't ask for a reboot.

8) Now open IE and go back to Windows/Microsoft Update site. Select the update for kb951847 (it's likely the only one selectable under high priority updates) and let it install. It should now install properly (keep fingers crossed :-).

9) Once installed, reboot and return to Update site and let the rest of the .NET updates get installed (plus any others).

10) Kick back and relax!

A royal pain but hope this helps!

- anthonyx26
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