Error problem while downloading updates

Believed me you have to reinstall your operating system. I encountered that problem too. I uninstall and re-installed .NET, update windows service packs nothing happened until I reformat the hard drive and install the operating system again.
remember format the hard drive first then install the operating system (backup your data first)

Try this for starters:

http://support.microsoft.com/kb/923100/

Basically, it involves un-installing .NET Framework Version 1.1 Service pack
1.

Then download and use (Run as Administrator) the Windows Installer CleanUp
Utility, and remove all references to .NET Framework Version 1.1 Service
pack 1 (only!).

Then reinstall .NET Framework Version 1.1 Service pack 1:
http://www.microsoft.com/downloads/detai…

Then run Windows Update again, to install KB929729.

• Hi, there are a few things you can do to see if the "Software is installed. The first is to go to the Control Panel's (Programs), Uninstall a programs, you want to view that the software is present. If the software is listed? Try to (repair, or change the program). Next, open the Task Manager from the Desktop, (right) click on the Taskbar to open. In the Task manager you want to open the Services... click on the button. In the next window, scroll through the listings to find the Microsoft. Net... click to open, and see if its (Enabled; if the service is running), if not? Enable the service, Start the service, select "Apply and OK." Note: Most changes, updates, downloads.. require the computer to be restarted for the applications to take effect. "If the solution helped?, "Ratings is appreciated, thanks"

Try reinstalling from scratch...remove all and install the oldest and update from there....if you have a problem then go back a step the last known working version.

PLEASE VOTE IF THIS WAS HELPFUL..THANKS AND GOOD LUCK.

Sir,

Run the cleanup tool to clean out temporary files, run the .NET
Framework cleanup tool, Run the installation file, then reboot and try to install it again and see if it works. If not try the below following steps....

Step One:
1. Go to Add or Remove Programs, try to remove all .NET Framework.
2. Please download and install the Windows Installer Cleanup utility
from this link:
http://download.microsoft.com/downlo...BD/msicuu2.exe
3. Then, please run it from Start-> All Programs-> Windows Install
Clean Up.
4. Please remove all Microsoft .NET Framework shown there and click
Remove.
Step Two:
1. Click Start->Run, type INSTALLER and click OK.
2. In the open folder, click View menu and select Details.
3. Right-click the Date Modified column header.
4. Click Comments
5. In the Comments column, locate the cached Windows Installer file
that displays Microsoft .NET Framework 1.1 (English) RTL x86 enu.
6. Right-click the cached Windows Installer file and then click
Uninstall.
7. Close the window.
8. Delete the cached Windows Installer file.
Step Three:
1. Restart your computer.
2. While your computer is booting up, press F8 to invoke the startup
menu.
3. In the startup menu, choose Safe Mode.
4. Log on as an administrator.
Note: In Safe Mode, your system display and Desktop will look and
perform differently than in Normal Mode. This is only temporary.
5. Delete the folder C:\WINDOWS\Microsoft.NET
6. Delete the folder C:\WINDOWS\system32\URTTemp
7. In the C:\Windows\System32 folder, locate the file mscoree.dll.
Right click and rename it to mscoree.old
Step Four:
1. Click Start->Run, type REGEDIT and click OK.
2. Navigate to the following registry key by expanding the "+" beside
the registry tree in the left pane:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework
3. Delete this key in the left pane.
4. Repeat steps 2-3 to delete the following key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup
5. Restart your computer to Normal Mode
Step Five:
1. Please download the Microsoft .NET Framework Version 1.1
Redistributable Package from the following link and save it to C:
http://www.microsoft.com/downloads/d...DisplayLang=en
2. Click Start->Run, type "c:\dotnetfx.exe /C" (without quotation marks
and there is a space in this command) in the open box and click OK.
3. Click Run, and type "C:\.NET Framework 1.1" (without quotation
marks) in the open box click OK
Note: If you are prompted to create this folder, please click Yes to
continue.
4. Locate the folder C:\.NET Framework 1.1 and double click the file
netfx.msi in it to install .NET Framework components.
If .NET Framework 1.1 can be successfully installed, we can go on to
install .NET Framework 1.1 Service Pack 1:
Microsoft .NET Framework 1.1 Service Pack 1
http://www.microsoft.com/downloads/d...DisplayLang=en
Step Six:
If the above two can be installed correctly, please download KB886903
from the following link and install again:
http://www.microsoft.com/downloads/d...displaylang=en
If the problem still exists, please describe the error message when
installing Microsoft .Net Framework Service Pack in further detail


Thanks
Good luck

Hi there,

the error codes that you have mention is related to windows update of Microsoft .net framework.

To troubleshoot this issue, I suggest we first perform these steps:

Step 1: Download Microsoft Windows Installer CleanUp utility
====================================
1. Visit:
http://download.microsoft.com/downlo...BD/msicuu2.exe
2. Save the file to your computer.
3. Right click "msicuu2.exe", click "Run as administrator" and follow the
wizard to install this tool on your computer.

Step 2: Remove .NET Framework
========================
1. Click Start ->All Programs->Windows Installer Clean Up, click Allow.
2. See if you can find .Net Framework software. If so, remove them.

After that, please restart the computer and perform the following
suggestions to reinstall .NET framework 1.1 and the updates for it.

Step 3: Install .NET Framework 1.1 Redistributable Package and related updates
==================================================
1. Please download the Microsoft .NET Framework Version 1.1 Redistributable
Package from the following link and save it to the C drive (C:\)

1) Microsoft .NET Framework Version 1.1 Redistributable Package

http://download.microsoft.com/downlo...6/dotnetfx.exe

2) Microsoft .NET Framework 1.1 Service Pack 1

http://download.microsoft.com/downlo...867460-X86.exe

3) Security Update for Microsoft .NET Framework, Version 1.1 Service Pack 1
(KB928366)

http://www.download.windowsupdate.co...d81a178b15.exe

4) .NET Framework 1.1 Service Pack 1 SYSTEM.WEB.DLL and MSCOREE.DLL Security
Update for Windows Vista (KB929729)

http://download.microsoft.com/downlo...929729-X86.exe

Please follow the steps above and if still problem persist please lets us know

Regards,

Om

ya now a days some software runs on net frame work 3.5 sp1 for nero 9 etc. if u dont have it. ols refer to microsoft site to download the software. it is free to download at no extra cost.......

If you have O/S XP. Just install SP2 from disk or MS website.

Windows Update error code "0x643" and Windows Installer error code "1603" are generic error codes. Typically, these error codes mean that the update was not installed. These errors codes are usually caused by a corruption in the .NET Framework installation or by an inconsistency on the MSI database state.


Method 1: Manually remove and reinstall .NET Framework loadTOCNode(2, 'resolution'); To manually remove and reinstall the .NET Framework, follow these steps:

1. Remove the .NET Framework.
   1. Click Start, and then click Control Panel.
   2. Double-click Add or Remove Programs.
   3. Note each version of the .NET Framework that is already installed on the computer. Then, uninstall all the versions of the .NET Framework.
   4. When you are prompted, restart the computer.
2. Use the Windows Installer CleanUp Utility to clean up the MSI database state for all the versions of the .NET Framework.
   1. Download the Windows Installer CleanUp Utility. The following file is available for download from the Microsoft Download Center:
      Download the Windows Installer CleanUp Utility package now. (http://download.microsoft.com/download/e/9/d/e9d80355-7ab4-45b8-80e8-983a48d5e1bd/msicuu2.exe)
      
      For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base: 119591 (http://support.microsoft.com/kb/119591/ ) How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.
   2. Install the Windows Installer CleanUp Utility as an administrator or as a user account that is a member of the local Administrators group.
   3. Click Start, point to All Programs, and then click Windows Install Cleanup.
   4. In the Windows Installer CleanUp Utility, remove all Windows Installer applications for the .NET Framework.
3. Restart the computer.
4. Download and then reinstall all the versions of the .NET Framework that were previously installed on the computer.
   
   To download the .NET Framework 1.0, visit the following Microsoft Web site: http://www.microsoft.com/downloads/details.aspx?FamilyID=d7158dee-a83f-4e21-b05a-009d06457787&DisplayLang=en (http://www.microsoft.com/downloads/details.aspx?FamilyID=d7158dee-a83f-4e21-b05a-009d06457787&DisplayLang=en) To download the .NET Framework 1.0 Service Pack 3, visit the following Microsoft Web site: http://www.microsoft.com/downloads/details.aspx?familyid=6978D761-4A92-4106-A9BC-83E78D4ABC5B&displaylang=en (http://www.microsoft.com/downloads/details.aspx?familyid=6978D761-4A92-4106-A9BC-83E78D4ABC5B&displaylang=en) To download the .NET Framework 1.1, visit the following Microsoft Web site: http://www.microsoft.com/downloads/details.aspx?familyid=262D25E3-F589-4842-8157-034D1E7CF3A3&displaylang=en (http://www.microsoft.com/downloads/details.aspx?familyid=262D25E3-F589-4842-8157-034D1E7CF3A3&displaylang=en) To download the .NET Framework 1.1 Service Pack 1, visit the following Microsoft Web site: http://www.microsoft.com/downloads/details.aspx?familyid=A8F5654F-088E-40B2-BBDB-A83353618B38&displaylang=en (http://www.microsoft.com/downloads/details.aspx?familyid=A8F5654F-088E-40B2-BBDB-A83353618B38&displaylang=en) To download the .NET Framework 2.0, visit the following Microsoft Web site: http://www.microsoft.com/downloads/details.aspx?FamilyID=0856eacb-4362-4b0d-8edd-aab15c5e04f5&DisplayLang=en (http://www.microsoft.com/downloads/details.aspx?FamilyID=0856eacb-4362-4b0d-8edd-aab15c5e04f5&DisplayLang=en) To download the .NET Framework 2.0 Service Pack 1, visit the following Microsoft Web site: http://www.microsoft.com/downloads/details.aspx?familyid=79BC3B77-E02C-4AD3-AACF-A7633F706BA5&displaylang=en (http://www.microsoft.com/downloads/details.aspx?familyid=79BC3B77-E02C-4AD3-AACF-A7633F706BA5&displaylang=en) To download the .NET Framework 3.0, visit the following Microsoft Web site: http://www.microsoft.com/downloads/details.aspx?familyid=10CC340B-F857-4A14-83F5-25634C3BF043&displaylang=en (http://www.microsoft.com/downloads/details.aspx?familyid=10CC340B-F857-4A14-83F5-25634C3BF043&displaylang=en) To download the .NET Framework 3.0 Service Pack 1, visit the following Microsoft Web site: http://www.microsoft.com/downloads/details.aspx?familyid=EC2CA85D-B255-4425-9E65-1E88A0BDB72A&displaylang=en (http://www.microsoft.com/downloads/details.aspx?familyid=EC2CA85D-B255-4425-9E65-1E88A0BDB72A&displaylang=en) To download the .NET Framework 3.5, visit the following Microsoft Web site: http://www.microsoft.com/downloads/details.aspx?familyid=333325FD-AE52-4E35-B531-508D977D32A6&displaylang=en (http://www.microsoft.com/downloads/details.aspx?familyid=333325FD-AE52-4E35-B531-508D977D32A6&displaylang=en)
5. When you are prompted, restart the computer.

Note When you have reinstalled all the versions of the .NET Framework, you can use Windows Update to check for updates to the .NET Framework.