Question about Microsoft Windows Vista Home Premium with Service Pack 1: Windows

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Error message 646

When trying to download updates I get error message 646

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Alright here is what you do.

Go to support.microsoft.com and type the name of the updates that are failing.

Once you download them on your computer, Right click on them, and Run as Administrator. This way, you will not get any errors.
Do let me know if that worked, otherwise, we can find something else.

Posted on Nov 18, 2009

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


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.


Sep 10, 2010 | Dell Computers & Internet

1 Answer

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

2 Answers

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...

1 Answer

Try to download updates and get error code 646


sounds like your internet connection is compromised. From Compaq's error code management page. see here for details

Nov 28, 2009 | HP Compaq Presario SR5210NX Desktop PC...

1 Answer

I have tried reg cure ... all kinds of cures .. and still getting an error code 646. any suggestions?


Apparently, your Windows failed to UPDATE properly. Microsoft distributes updates on "Update Tuesday" - second Tuesday of the month.
Go to the update page to complete the updates:
http://www.update.microsoft.com

Nov 14, 2009 | Dell Inspiron 1525 Laptop Flamingo Pink

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...

1 Answer

Tried to download 17 updates and all 17 downloads failed all it tells me is error 646


Open Windows Update then you should see
the "View Available Updates" link click that. Then the updates you need to install should then be listed. Each update should be checked. Right-click each update individually and choose "View Details". The info about the particular update's info should come up then you should see in bold in that window "More information:" then a link right under that. Click that and a web page should open with a download link this is the update download page. Click that button then run or save the installer package then proceed to execute the installer package. Repeat the process for each failed update!

Nov 08, 2009 | Acer Aspire 5500 5570-2609 Laptop

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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