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I can't install Windows updates and get error code 646.

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1. If you Operating System is due to registry errors, you can try the registry cleaner @ http://windows-error-repair.org/error-library/error-code-646.html

2. Check your security programs eg. firewall or internet security programs, disable it and try Windows Updates.

3. Scan your PC for any Malwarewares or virus infections.

Hope it helps.


Posted on Sep 11, 2010

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I cannot receive microsoft updates, they fail. Error 1606


The error code 646 will appear when any of the Microsoft office application updates fail to install. Run fixit provided in the below link and then try to install updates.
http://support.microsoft.com/kb/971058

Jan 12, 2010 | Microsoft Windows Vista Home Basic Edition

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How to fix this problem


http://www.vistaheads.com/forums/microsoft-public-windowsupdate/322548-error-646-a.html read that page, has all the info you need on how to get info and the official MS page to fix it.
Should be able to help you properly

Jan 03, 2010 | Microsoft Windows Vista Home Premium with...

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Error code 646


Hello Titan,

Try to disable your firewall. If you’re using McAfee Personal Firewall Plus, F-Secure Internet Security, Norton Internet Security or another Firewall vendor, see its respective support page for assistance in disabling it (temporarily). If you’re using the built-in Vista Firewall, keep reading.

* Open the Control Panel and select Security.

* Select Turn Windows Firewall on or off.

* Select Off (not recommended), click Apply and then OK.

* Back at the Windows Update screen, click the Try again button.

* The download(s) and installation should start…

* and this time successfully install. If a restart is required, make sure to re-enable your Firewall once your PC restarts.

* Though this solution will work for most Vista Update errors

Regards,
Soul_srch007

Dec 19, 2009 | Microsoft Windows 98 Year 2000 Update for...

1 Answer

MS updates fail with error code 646


unblock windows update from windows firewall and from your anti-virus's firewall

Nov 20, 2009 | Microsoft Windows Vista Home Premium with...

1 Answer

Keep geting error code 646 when trying to install updates


Hi ,

Disable windows firewall and try again
Type firewall.cpl in run command , then disable the firewall

Thanks
Siju.D

Nov 16, 2009 | Computers & Internet

1 Answer

Windows error 646 cannot update windows norton live the same windows vista


The Error Code 646 can occur if the Windows Update Agent Wups2.dll file is registered incorrectly in the Operating System registry. So when you try to install a Windows Update, because the registry files that correspond to the Wups2.dll file are missing, the update installation fails.

Follow these steps to properly register the Windows Update files and resolve the issue:

1. Click the Start button, click All Programs, click Accessories, and then click Notepad.

2. In the Untitled - Notepad window, either copy and paste or manually type the following commands into the text field:

REGSVR32 WUPS2.DLL /S
REGSVR32 WUPS.DLL /S
REGSVR32 WUAUENG.DLL /S
REGSVR32 WUAPI.DLL /S
REGSVR32 WUCLTUX.DLL /S
REGSVR32 WUWEBV.DLL /S
REGSVR32 JSCRIPT.DLL /S
REGSVR32 MSXML3.DLL /S


3. On the menu bar, click File.

4. In the File menu, click Save As.

5. In the Save As window, in the File name field, type Register.bat.

6. In the Save as type field, click the down arrow and click to select All Files (*.*).

7. Click the Browse Folders button.

8. Browse to the Desktop folder, and then click the Save button.

9. In the Register.bat - Notepad window, click the X in the upper-right corner to close the window.

10. On the Desktop, right-click the Register.bat file, and then click "Run As Administrator".

NOTE: If prompted for an Administrator password or a User Account Control prompt is displayed, type the appropriate password, click Continue or click Yes.

11. Once the Register.bat file has run, click the Start button, click All Programs, then click Windows Update and try to install updates again.

12. NOTE: If the updates still fail to install properly, it may be necessary update the version of the Windows Update Agent software installed on the Computer.

Follow the steps in Microsoft KB Article ID 949104 to download and install the latest version of the Windows Update Agent software.


Good Luck!!!!!!!!!

Nov 15, 2009 | Microsoft Windows XP Professional

2 Answers

Update KB946140 and Error Code 646


Sometimes MS update has compatibility issue.Better no to install cause sometimes it can create a bug (Blue Screen Crash) to your system.Try to restore yor windows 7 to an earlier point and the error message gone.Also try to turn off your automatic update so that you can choose your update to be installed.

Nov 09, 2009 | Microsoft Outlook with Business Contact...

2 Answers

Code 646 when trying to update


You need to disable your firewall. If you’re using McAfee Personal Firewall, or Norton Internet Security or another Firewall vendor, see vendor support page for assistance in disabling it (temporarily).

If you’re using the built-in Vista Firewall, keep reading.

- Open the Control Panel and select Security.

-Select Turn Windows Firewall on or off.

- Select Off (not recommended), click Apply and then OK.

- Back at the Windows Update screen, click the Try again button.

-The download(s) and installation should start…

-And this time successfully install. Now make sure to re-enable your Firewall once your PC restarts.

* Though this solution will work for most Vista Update errors.





Oct 24, 2009 | HP Pavilion dv1000 Notebook

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