how to solve code 646

oenone

New member
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hello sirs

i am in need of assistance, when i try updating my win 7 x64bit i keep on getting " code 646 windows update encountered an unknown problem"

what should i do to fix this error

please help me

thank you
 

My Computer

OS
vista ultimate 32bit
hello sirs

i am in need of assistance, when i try updating my win 7 x64bit i keep on getting " code 646 windows update encountered an unknown problem"

what should i do to fix this error

please help me

thank you

oenone

I need more info about yours system. Was it a clean install, or an upgrade?

We could also use some info about your computer.

Ken
 

My Computer

Computer Manufacturer/Model Number
HP Pavillion dv-7 1005 Tx
OS
Win 8 Release candidate 8400
CPU
[email protected]
Memory
4 gigs
Graphics Card(s)
Nvidia 9600M
Sound Card
HD built-in
Monitor(s) Displays
17" Wxga
Screen Resolution
1440x900
Cooling
none
Internet Speed
45Mb down 5Mb up
A little googling gave several reasons to this error code. Click the link and have a look.

Kari
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
HP ENVY 17-1150eg
OS
Windows 10 Pro x64 EN-GB
CPU
1.6 GHz Intel Core i7-720QM Processor
Memory
6 GB
Graphics Card(s)
ATI Mobility Radeon HD 5850 Graphics
Sound Card
Beats sound system with integrated subwoofer
Monitor(s) Displays
17" laptop display, 22" LED and 32" Full HD TV through HDMI
Screen Resolution
1600*900 (1), 1920*1080 (2&3)
Hard Drives
Internal: 2 x 500 GB SATA Hard Disk Drive 7200 rpm
External: 2TB for backups, 3TB USB3 network drive for media
Cooling
As Envy runs a bit warm, I have it on a Cooler Master pad
Keyboard
Logitech diNovo Media Desktop Laser (bluetooth)
Mouse
Logitech Performance Mouse MX
Internet Speed
50/10 Mbps VDSL
Antivirus
Windows Defender 4.3.9431.0
Browser
Maxthon 3.5.2., IE11
@ zigzag

yes sir it was a fresh install. i am running on win 7 64bit amd athlon 6400+ 3.2 ghz processor, 4gb ddr2 800 , 500gb WD sata hdd and 4870 vidcard.

@kari

thanks for the link sir
 

My Computer

OS
vista ultimate 32bit
i still keep getting this error whenever i try to update.


these are security updates for ms office


does anyone know how to get this fixed
 

My Computer

OS
vista ultimate 32bit
i still keep getting this error whenever i try to update.


these are security updates for ms office


does anyone know how to get this fixed

After much reading I may have it. what firewall are you running?
 

My Computer

Computer Manufacturer/Model Number
HP Pavillion dv-7 1005 Tx
OS
Win 8 Release candidate 8400
CPU
[email protected]
Memory
4 gigs
Graphics Card(s)
Nvidia 9600M
Sound Card
HD built-in
Monitor(s) Displays
17" Wxga
Screen Resolution
1440x900
Cooling
none
Internet Speed
45Mb down 5Mb up
i only have windows as a firewall

i dont have any 3rd party firewall installed and i also have a nod 32 ver. 4 antivirus installed
 

My Computer

OS
vista ultimate 32bit
Which version of MS office are you running?
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Bruce ... somewhere in his 40's
OS
Windows 7 Ultimate 32bit SP1
CPU
Intel(R) Core(TM)2 Quad CPU @ 2.40GHz, 2400 MHz
Motherboard
INTEL/D975XBX2
Memory
4 GB
Graphics Card(s)
ATI Radeon HD 2600 Pro
Monitor(s) Displays
Samsung SyncMaster 914v
Screen Resolution
1280 x 1024
Hard Drives
2/500GB each ... ST3500630AS ATA Device.
One is not connected
PSU
Rocketfish 700 W
Case
G.Skill Gigabyte Chassis
Keyboard
Standard PS/2 Keyboard
Mouse
Microsoft PS/2 Mouse
Internet Speed
DSL
Antivirus
Avira Internet Security
Browser
IE 11
Other Info
ATI HDMI Audio
Microsoft.Office.Professional.Plus.2007.With.SP2.Build.12.0.6416.1000.

here is the version i installed
 

My Computer

OS
vista ultimate 32bit
You may need to validate it in order to get the updates.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Bruce ... somewhere in his 40's
OS
Windows 7 Ultimate 32bit SP1
CPU
Intel(R) Core(TM)2 Quad CPU @ 2.40GHz, 2400 MHz
Motherboard
INTEL/D975XBX2
Memory
4 GB
Graphics Card(s)
ATI Radeon HD 2600 Pro
Monitor(s) Displays
Samsung SyncMaster 914v
Screen Resolution
1280 x 1024
Hard Drives
2/500GB each ... ST3500630AS ATA Device.
One is not connected
PSU
Rocketfish 700 W
Case
G.Skill Gigabyte Chassis
Keyboard
Standard PS/2 Keyboard
Mouse
Microsoft PS/2 Mouse
Internet Speed
DSL
Antivirus
Avira Internet Security
Browser
IE 11
Other Info
ATI HDMI Audio
how do i validate my ms office ,sir?
 

My Computer

OS
vista ultimate 32bit
One Solution for Error Code 646

(11/21/09) - I have Vista (64bit version), and I was getting this error for three weeks myself. Thanks to one the suggestions below, I got it to work. The suggestion that worked for me was to "manually" install each update "individually". I could not use the windows automatic update feature. Here's what I did (BTW, I did not have to turn off my firewall to do this):

1) Went to Bing.Com
2) Typed in the exact name of the update as it was displayed on the Windows Update Screen (e.g. Security Update for Microsoft Office Excel (KB######)
3) Bing found the exact match to what I typed in on the Microsoft website
4) I clicked on the link
5) Selected "Download"
6) And Viola, it worked :-)
7) I repeated this step four more times, and now I've successfully installed all five updates that I'd been trying to install for three weeks.
8) Thanks again to all of the tips people listed below, that was helpful and the "manual" update tip worked for me.

Hope this works for other people as well.
 

My Computer

OS
Vista Home 64 Bit
Hi;

I had the same problem on windows 7, 64 bit and somewhere on this site I found the solution?


SOLUTION:
Just go to Bing.com and type in the update number . That is = KBXXXXXXX and display the page and CLICK on DOWNLOAD and manually install it. It seems to be only 4 or more updates that are failing with this error. Just use Windows update history and do the same for all failed updates, reboot and they will all be listed as successful.

It worked for me for about 4 or more failed updates.

Good Luck.

Phil
 

My Computer

Computer Manufacturer/Model Number
HP Pavilion Elite e9120y Model KY811AA-ABA e9120y Desktop
OS
Windows 7 Home Premium 64 bit
CPU
AMD Phen (II X4 910) 2600Mhz 4 core
Memory
*gig
Graphics Card(s)
ATI
Sound Card
Realtek
Monitor(s) Displays
LG 2341
Hard Drives
1 Tb
PSU
?
Case
?
Cooling
?
Sorry about re-stating the solution above - this was my first entry on the forum and didn't think to look below at the "HOW TO SOLVE CODE 646" . Oh well, I verified that it does work.

Thanks

Phil
 

My Computer

Computer Manufacturer/Model Number
HP Pavilion Elite e9120y Model KY811AA-ABA e9120y Desktop
OS
Windows 7 Home Premium 64 bit
CPU
AMD Phen (II X4 910) 2600Mhz 4 core
Memory
*gig
Graphics Card(s)
ATI
Sound Card
Realtek
Monitor(s) Displays
LG 2341
Hard Drives
1 Tb
PSU
?
Case
?
Cooling
?
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