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How Do I fix .NET Framework installation error?

I have ben getting the following erros on my computer for over a month now: Windows Update is still trying to install both .NetFramework 2.0 and 3.0 over and over.  Is there a easy way to manually uninstall
NetFramework and start over?

SYSTEM LOGS:
Event Source: MsiInstaller
Description:
Product: Microsoft .NET Framework 2.0 Service Pack 1 -- Error 1714.The older version of Microsoft .NET Framework 2.0 Service Pack 1 cannot be removed.  Contact your technical support group.  System Error 1612.

Installation Failure: Windows failed to install the following update with error 0x80070643: Microsoft .NET Framework 2.0 Service Pack 1 (KB110806).

Installation Failure: Windows failed to install the following update with error 0x80070643: Microsoft .NET Framework 3.0 Service Pack 1 (KB929300).

Timeout (30000 milliseconds) waiting for the QBCFMonitorService service to connect.


APPLICATION LOGS:
Product: Microsoft .NET Framework 2.0 Service Pack 1 - Update '.NET Framework 2' could not be installed. Error code 1603. Additional information is available in the log file C:\WINDOWS\TEMP\dd_NET_Framework20_Setup7667.txt.

Failed auto update retrieval of third-party root list sequence number from: <http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootseq.txt> with error: This operation returned because the timeout period expired.



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eliminat
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You can try a program called RevoUninstaller from

www.revouninstaller.com/

To uninstall .NET Framework.   Then reinstall from Microsoft's Website.
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orangutang

I've had this problem - the way I've fixed it is to uninstall any version of the framework - then install them all IN ORDER, one at a time (ie.. make sure .NET 1.1 is fully patched with the latest updates before trying to install .NET 2.0)

it takes  a while - but it seems to work consistently
Is there an easy way to manually uninstall NetFramework and start over?

Did you try Control Panel, Add Remove Programs.....


Then go to the download page to download and re-install again.
http://www.microsoft.com/downloads/details.aspx?familyid=0856eacb-4362-4b0d-8edd-aab15c5e04f5&displaylang=en 

You might go here too, an uninstaller from Microsoft.
http://www.microsoft.com/downloads/details.aspx?FamilyId=AAE7FC63-D405-4E13-909F-E85AA9E66146&displaylang=en

Make sure your computer meets the minimum system requirements before re-installing. For example, .NET 2.0 Framework requires XP Service Pack 2.
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ASKER

If I uninstall and reinstall .Net Framework, will I have to uninstall and reinstall all my applications that use .Net Framework?
Ditto on the No......

I have uninstalled .NET Framework and it re-installed it a couple of times and haven't experienced any issues.




I was ABLE uninstall .NET FRamework 3.0 but  cannot uninstall .NETFRAMEWORK 2.0.

I used the manual removal guide   http://support.microsoft.com/kb/908077


I was able to unregister re-register but when I ran INSTALLER from the command prompt
it would not repair, said it could not find the a path to the file.

What is the best course of action from here, Autoi-Uninstall tools or Manual uninstall?
My vote is the Manual unistall. An Auto uninstall is probably "black box" - you can't /  don't know what it does. Plus the manual Repair is from Microsoft.

Check the Repair Section at http://support.microsoft.com/kb/908077, go for Manually remove and then reinstall the .NET Framework 2.0 section.

First Step in Manual Uninstall of .NET Framework 2.0 Did not work.  The Installer did not uninstall.  I complained that there was a missing file it was looking for to proceed.

Below is what I did

1.Remove the .NET Framework 2.0 from the Windows Installer cache: a. Click Start, click Run, type installer in the Open box, and then click OK.
b. On the View menu in Windows Installer, click Details.
c. Right-click the Name column header, and then click Comments.
d. Right-click the cached Windows Installer file that has the Microsoft .NET Framework 2.0 RTL x86 enu comment, and then click Uninstall.
(THIS IS WHERE IT STOPPED... IT WOULD NOT UNINSTALL)
e. After the uninstall process has completed, quit Windows Installer.
Perhaps if you try to re-install only it will overwrite anything that's corrupted.
PCableGuy, How to I re-install?  Do I use the command prompt Installer and the Dotnetfx.exe file?
Yes, but run it from Control Panel, Add Remove Programs if you can.
PCableguy, Are you saying I should just install Dotnetfx.exe as a new program over the top of the corrupted install?  (Via Add REmove Programs)

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PCableGuy
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