Code 646 Windows Update Encountered An Unknown Error Vista
Uninstaller Memory Savior Evidence Smart Duplicate File Cleaner Driver Checker Spyware Cease Support FAQs Contact Us Products Help Official Blog Press Press Releases Affiliate Program Product Awards Media Package Permissions Home Blog Computer error code 646 - How do I fix error code 646 for Windows update? Posted by in Blog Windows update errors on November 10th, 2012 | Leave a comment TAGS: computer update error, error code 646, Windows update error code “How do I fix error code 646 for Windows update?” Many users have ever asked themselves this question while using the computer because it is quite common for them to get such error while automatically or manually installing some Windows updates. Typically, the error message usually looks like this: “Error Code: 0X80070646; Windows Update has encountered an unknown error” or “Error Code: 646; Windows Update has encountered an unknown error” No matter it is error code 646 or 0X80070646, they are all generated when the Windows Installer encounters an error. When the computer error code 646 shows up frequently, check and make sure that your Firewall is not stopping you from installing some programs or updates on the PC. If you’re using McAfee Personal Firewall Plus, F-Secure Internet Security, Norton Internet Security or some another Firewall programs, look for its respective support page for assistance to temporarily disable it and then try another Windows update install. If you’re using the Windows built-in Firewall, follow these steps to continue. * Go to Start, Control Panel and select Security. * Select Turn Windows Firewall on or off. * Select the “Off (not recommended)” option, click Apply and then OK to save your settings. * Back to the Windows Update screen, click the Try again button. * Then, the download(s) and installation should start…and you can follow the on-screen steps to install the updates successfully on your PC without an error code 646 anymore. If this step does not solve the computer error code 646, it might be caused by an invalid entry within the registry database. By the way, registry errors can also bring some other Windows update error codes such as update error 80072ee2 or error code 80070643. At this time, you can follow the below instructions to go: 1) Go to Start, Run, type regedit in the box and then click OK to continue. 2) Locate and then click the following registry subkey: HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders 3) Locate AppData within this folder. By the way,
List Welcome Guide More BleepingComputer.com → Microsoft Windows Support → Windows Vista Javascript Disabled Detected You currently have javascript disabled. Several functions may not work. Please re-enable javascript to access full functionality. Register a free account to unlock additional features at BleepingComputer.com Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you http://blog.cheesesoft.com/computer-error-code-646-how-do-i-fix-error-code-646-for-windows-update/ are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site. Click here to Register a free account now! or read our Welcome Guide to learn how to use this site. Code 646: Windows update encountered an unknown error. Started by kzpaloma , Nov 20 2009 12:03 PM Please log in http://www.bleepingcomputer.com/forums/t/272781/code-646-windows-update-encountered-an-unknown-error/ to reply No replies to this topic #1 kzpaloma kzpaloma Members 2 posts OFFLINE Local time:08:42 PM Posted 20 November 2009 - 12:03 PM I have the following updates that keep coming up but not installing: KB975960, KB974561, KB973704, KB973709, KB972581, KB973593, KB9774234 (? may have accidentally put an extra number in this one), and KB972363. I have gotten the error listed in my topic title and this one: Error opening installation log file. Verify that the specified log file location exits and is writable. I have been to microsoft's site and have tried several of their options, including several downloads that took a few hours to download which didn't help or also would not install. One was: Windows6.0-KB947821-v4-x86. It is on my desktop, but when I open it, it tells me: The update does not apply to my system. The reason I even knew that I was having problems was my initial search for an explorer problem (it freezes, particularly if I do a google search and click on one of the search result links). I am not sure if these update problems are the source of the problem, but I figure I need to get this res
Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks. Windows 7 Help Forums Windows 7 help and support Installation & Setup » User Name Remember Me? Password Advanced Search Show Threads Show Posts Advanced Search Go to Page... Windows 7: how to solve code 646 Page 1 of 2 1 2 > 13 Oct 2009 #1 oenone vista ultimate 32bit 22 posts how to solve code 646 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 System Specs OS vista ultimate 32bit oenone View Public Profile Find More Posts by oenone . 13 Oct 2009 #2 zigzag3143 Win 8 Release candidate 8400 2,137 posts Quote: Originally Posted by oenone 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 System Specs System Manufacturer/Model Number HP Pavillion dv-7 1005 Tx OS Win 8 Release candidate 8400 CPU 2@2.4 Memory 4 gigs Graphics Card Nvidia 9600M Sound Card HD built-in Monitor(s) Displays 17" Wxga Screen Resolution 1440x900 Cooling none Internet Speed 45Mb down 5Mb up zigzag3143 View Public Profile Find More Posts by zigzag3143 13 Oct 2009 #3 Kari Windows 10 Pro x64 EN-GB 17,805 posts A Finnish ex-pat in Leipzig, Germany A little googling gave several reasons to this error code. Click the link and have a look. Kari My System Specs Computer type Laptop System 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 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) Keyboard Logitech diNovo Media Desktop Laser (bluetooth) Mouse Logitech Performance Mouse MX Cooling As Envy runs a bit warm, I have it on a Cooler Master pad Hard Drives Internal: 2 x 500