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These are the steps to fix issues with windows updates, if your not sure create a system restore point and then perform these steps

Step1

There are steps to fix issues with windows updates but not all, the simple way to fix issue's with genral error's:

Starting with registering the DLL files for windows updates Reg-DLL-Files.zip.

Step2

The next step will be reinstalling the service for windows updates this is a third party software not 80% we can findout the issue

once the DLL files are registered, try to reinstall the windows update service by clicking on tools and reinstalling the service for windows updates and internet explorer Reinstall Winupd Service if the version is 6.

For Internet explorer 7 or later, try to reset the settings for the internet explorer in advance internet option .

Step3

Once Step1 & step2 is completed try to run this .BAT file WinUpdate_fix.zip this will reset the settins and perform some changes in the registry. If there is still problem's check if there is any firewall or router and even perform a Clean Boot

II) Try to even try this bat file before restarting the computer Click Here

If you still have porblem try to check if DNS is forced or try to forced the DNS 4.2.2.2 & Alt: 4.2.2.1

Kindly Restart the computer once Step1, Step2 & Step3 is completed to check for updates

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You receive an access violation error and the system may appear to become unresponsive when you try to install an update from Windows Update or from Microsoft Update

 Step1: The problem that the "Symptoms" section describes was corrected in Windows Update Agent 3.0 and in update 927891. These updates were distributed through Microsoft Update in June and July, 2007. If you are still experiencing a problem that resembles the one that this article describes, it may be a different problem. To troubleshoot similar problems, please see the "Similar problems and resolutions" section later in this article

SYMPTOMS
When you try to install an update from Windows Update or from Microsoft Update, you experience the following symptoms:• The system may appear to become unresponsive when Windows Update scans for updates that use Windows Installer.
• You receive an access violation error in the Svchost.exe process. This process is related to the Automatic Updates service. This access violation occurs when you use Automatic Updates to scan for updates by using the daily automatic schedule or when you visit the Microsoft Update Web site to manually scan for updates.
• A memory leak occurs when Windows Update scans for updates that use Windows Installer.
• Windows Update scans take a very long time, sometimes hours, to finish.  Click To Install Hot fix 

Instructions
In the File Download dialog box, do one of the following:

To start the installation immediately, click Open or Run this program from its current location.
To copy the download to your computer for installation at a later time, click Save or Save this program to disk.
For more information about the download you have selected, including any detailed installation instructions, return to the download information page

Step2: Download and install Windows Update Agent (WUA) 3.0

To download WUA 3.0, click the link for the version of Windows that you are running. Click Here

Important: Many instances of the Svchost.exe process may be running on a Windows-based computer. These Svchost.exe processes control certain tasks. The software update that is described in this article is only designed to address the problem that is mentioned in the "Symptoms" section. Other problems that you experience with Svchost.exe may require alternative resolutions or troubleshooting steps.

To resolve this problem: you must install this update together with the Windows Update Automatic Client 3.0. The Windows Update Automatic Client 3.0 will automatically be released through Automatic Updates by June 30, 2007. The updated Windows Client changes the thread modeling to move MSI scans to a thread that is separate from the user interface.

For the MSI update, install one of the following updates based on the version of Windows that is installed. To determine the version of Windows that is installed,

Follow these steps:

1. Click Start, click Run, type sysdm.cpl, and then click OK. 
2. In the System Properties dialog box, click the General tab, and then notice the information that appears under System. 
After you download the appropriate update, double-click the update package to install the update.

Note All versions of Windows XP, except for Windows XP Media Center versions, state "Version 2002" on the General tab in the System Properties dialog box. The update that is listed in the "Windows XP, all versions (including all versions of Windows XP Media Center)" section is correct for all versions of Windows XP. This includes all versions of Windows XP Media Center.
Windows XP, all versions (including all versions of Windows XP Media Center) Click Here

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If you have any issus with the SVCHOST.EXE steps are below......................................

Application popup: svchost.exe - Application Error : The instruction at "0x745f2780" referenced memory at "0x00000070". The memory could not be "read".

 When you try to install an update from Windows Update or from Microsoft Update, you experience the following symptoms:• The system may appear to become unresponsive when Windows Update scans for updates that use Windows Installer.


• You receive an access violation error in the Svchost.exe process. This process is related to the Automatic Updates service. This access violation occurs when you use Automatic Updates to scan for updates by using the daily automatic schedule or when you visit the Microsoft Update Web site to manually scan for updates.

• A memory leak occurs when Windows Update scans for updates that use Windows Installer.
• Windows Update scans take a very long time, sometimes hours, to finish.

To resolve this problem, apply the latest Msi.dll hotfix. This hotfix is described in the following Microsoft Knowledge Base article: Hot fix click Here 

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What causes Error 0x800a0046

# The user logon account belongs to the Guests or Limited account groups.

# The security descriptor does not let authenticated users run Windows Update.

# The Impersonate a client after authentication policy is missing the Administrator and Service account from the list of Users and Groups.

To resolve this error, use one of the following methods:

Resolution Suggestion One:

# Remove the user account that is experiencing difficulty from the Guests or Limited account groups:

1. Click Start, click Run, type control admintools, and then click OK.
2. Click Computer Management.
3. Expand Local Users and Groups.
4. Select Users.
5. Open the account that is used to access Windows Update.
6. Click the Member Of tab.
7. Select the user account that you want to remove, and then click Remove.

------------------------------

Resolution Suggestion Two:

# Set the Security Descriptor:

First stop the Automatic Update Service:

1. Click Start
2. Choose Run
3. Type cmd and then click OK.
Type:

sc sdset wuauserv D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)
(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)
(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPDTLOCRRC;;;PU)

and then press ENTER.

You will receive a "Success" message.
4. Type Exit to close the command prompt.
5. Try Windows Update again.

(NB - You should be able to confirm that this has worked by typing:  sc sdshow wuauserv  in a command prompt!)

--------------------------------------------
 

Resolution Suggestion Three:

# Verify the Local Administrator and Service account are added to the "Impersonate a client after authentication" security policy.

1. Click Start.
2. Point to Programs.
3. Point to Administrative Tools.
4. Choose Local Security Policy.
5. Expand Local Policies.
6. Choose User Rights Assignment.
7. Double-click to open the Impersonate a client after authentication policy.
8. On the Local Security Setting tab, add the Service and  Administrator to the list of Users and Groups.
9. Click OK.
10. Restart the system.

From a newsgroup posting:

Another possible cause for the 0x800a0046 error is that the "Automatic Updates" service is not running as the correct user. To check/fix this, find "Automatic Updates" in the services list and choose "properties". Then select the "Log On" tab and make sure the button for "Local System Account" is selected. If it isn't, then close the window and restart the system.

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These are the steps to fix issues with Dot Net Frame work (1.1 or 2.0), if your not sure create a system restore point and then perform these steps

There are steps to fix issues with .Net frame work but not all, the simple way to fix issue's with genral error's:

Step1

First thing you need to uninstall Uninstall net frame work or Direct link by clicking this tool, once the dot net frame work is uninstalled restart the computer.

Step2

Click Start, click Run, type regedit, and then click OK, Locate and then delete the following registry subkeys:

  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup

Click on START > RUN > typy MICROSOFT .NET and press ENTER, you will get a folder open delete the folders

Step3

 Click Start, click Run, type System32, and then click OK

 Delete the following files or folders:

  • URTTemp
  • Mscoree.dll

Step4

Click Start, click Run, type Microsoft.NET, and then click OK
  •  Delete the Framework folder
  • Delete the assembly folder in windows Directory

Step5

Registered & Un-Registered the DLL files

  • Click Start, click Run, type msiexec /unregister, and then click OK
  • Click Start, click Run, type msiexec /regserver, and then click OK

Once you complete Step 5

Restart the computer and install Dot netframwork 1.1 and then 2.0. Check for the link underneath.

 

How to Repair this SVCHOST.EXE error

After some investigating into the 0X745f2780 SVCHOST error, it became apparent the problem is a corrupted Windows Update in Windows XP. Follow the steps below to fix this error.

Verify Windows Update Service Settings

Click on Start, Run and type the following command in the open box and click OK

services.msc

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How to Repair this SVCHOST.EXE error

After some investigating into the 0X745f2780 SVCHOST error, it became apparent the problem is a corrupted Windows Update in Windows XP. Follow the steps below to fix this error.

Verify Windows Update Service Settings

Click on Start, Run and type the following command in the open box and click OK

services.msc


Find the Automatic Updates service and double-click on it.
Click on the Log On Tab and make sure the "Local System Account" is selected as the logon account and the box for "allow service to interact with desktop" is UNCHECKED.
Under the Hardware Profile section in the Log On Tab, make sure the service is enabled.
On the General Tab, the Startup Type should be Automatic, if not, drop the box down and select Automatic. 
Under "Service Status" on the General tab, the service should be Started, click the Start button enable it.
Repeat the steps above for the service "Background Intelligent Transfer Service (BITS)"
Re-Register Windows Update DLLs

Click on Start, Run, and type CMD and click ok
In the black command window type the following command and press Enter

REGSVR32 WUAPI.DLL


Wait until you receive the "DllRegisterServer in WUAPI.DLL succeeded" message and click OK
Repeat the last two steps above for each of the following commands:

REGSVR32 WUAUENG.DLL
REGSVR32 WUAUENG1.DLL
REGSVR32 ATL.DLL
REGSVR32 WUCLTUI.DLL
REGSVR32 WUPS.DLL
REGSVR32 WUPS2.DLL
REGSVR32 WUWEB.DLL

Remove Corrupted Windows Update Files


At the command prompt, type the following command and press Enter

net stop WuAuServ

Still at the command prompt,

type cd %windir% and press Enter

In the opened folder, type the following command and press Enter to rename the SoftwareDistribution Folder

ren SoftwareDistribution SD_OLD

Restart the Windows Update Service by typing the following at the command prompt

net start WuAuServ


type Exit and Press Enter to close the command prompt
Reboot Windows

click on Start, Shut Down, and Restart to reboot Windows XP
Although this method may not solve all of the issues with a SVCHOST.EXE Application error, I have found it fixed the problem with the 0x745f2780 reference error.

Other Issues with SVCHOST.EXE

I've encountered other issues with SVCHOST taking up 100% of the CPU Cycles. These issues are usually experienced with Windows Update in some form or another. To fix this frustrating problem, following these steps:

1) Download and install Update for Windows XP (KB927891)
2) Download and install an update for Windows Update Agent WSUS 3.0
3) Restart your computer and your computer should run better with slowing to a crawl because of SVCHOST.EXE

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 Fixes for window updates

  • Unreg & Register DLL files for windows updates              :                        Reg-DLL-Files.zip
  • Register DLL files, Reinstall Autoupdate Service             :                        Reinstall Winupd Service           
  • Reset Autoupdate In Registry                                      :                        WinUpdate_fix.zip
  • DLL Register Error failes (Right Click & open new window):                        Update_Fix  (Enter the Code to download)

Open with new windows for  Windows Updates

___________________________________________________________________________________________________

Download Latest Updates

  • Upgrade To XP Service Pack 2                                      :                Service Pack 2 http://06xpsp2.notlong.com 
  • Upgrade To XP Service Pack 3                                      :                Service Pack 3 http://06xpsp3.notlong.com
  • Microsoft .NET Framework Version 1.1                            :                Net frame 1.1
  • Microsoft .NET Framework 2.0                                       :                Net frame 2.0
  • Microsoft .NET Framework 3.0                                       :                Net frame 3.0
  • Windows Installer 4.5                                                  :                Installer    To    Download
  • Learn More To Fix Issues (Right Click&open new window  :                Click Here
  • Uninstall Cleanup Tool for the .NET Framework 1.0 & 1.1 :                KB928366-KB929729-KB928367 & KB928367

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Kindly update the same if you are having any problem with windows XP or you even want to share your estimation with our supplementary.  Click Here

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