Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, 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: Updates KB2478662 & KB2446710 fail with error code 80070BC9

04 Mar 2012   #1

Wndows 7 Ultimate
Updates KB2478662 & KB2446710 fail with error code 80070BC9

Systeem is Windows 7 HP SP1 64-bit.
Since 25-1 updates KB2478662 and KB2446710 (security supdates for .NET Framework 3.5.1 on Windows 7 Service Pack 1) fail with error code 80070BC9.
All other updates including .Net 4 install normally.

I have tried:
  • clean boot
  • updates one by one
  • fixit
  • system update readiness tool (kb947821)
  • sfc scannow

I would like to de-install .Net 3.5.1 but this feature does not seem available in this Home Premium system.

Please advise (other than system reinstall)

My System SpecsSystem Spec

07 Mar 2012   #2
Microsoft MVP

Windows 7 Ultimate 32bit SP1

See if this helps ....

download TFC by Old Timer TFC - Temp File Cleaner by OldTimer - Geeks to Go Forums and save it to your desktop.
Save any unsaved work. TFC will close ALL open programs including your browser!
Double-click on TFC.exe to run it. If you are using Vista/Windows 7 right-click on the file and choose Run As Administrator.
Click the Start button to begin the cleaning process and let it run uninterrupted to completion.
Important! If TFC prompts you to reboot, please do so immediately. If not prompted, manually reboot the machine anyway to ensure a complete clean.

TFC (Temp File Cleaner) will clear out all temp folders for all user accounts (temp, IE temp, java, FF, Opera, Chrome, Safari), including Administrator, All Users, LocalService, NetworkService, and any other accounts in the user folder. It also cleans out the %systemroot%\temp folder and checks for .tmp files in the %systemdrive% root folder, %systemroot%, and the system32 folder (both 32bit and 64bit on 64bit OSs). It shows the amount removed for each location found (in bytes) and the total removed (in MB). Before running, it will stop Explorer and all other running apps. When finished, a reboot is required the user must reboot to finish clearing any in-use temp files.
My System SpecsSystem Spec
08 Mar 2012   #3

Wndows 7 Ultimate

Thank you, but I have started a reinstallation in the meantime, and will remeber this suggestion for "next" time.
My System SpecsSystem Spec


 Updates KB2478662 & KB2446710 fail with error code 80070BC9

Thread Tools

Similar help and support threads for2: Updates KB2478662 & KB2446710 fail with error code 80070BC9
Thread Forum
Solved IE10 Update Fail on Win 7 Pro x64 - error code 9C59 Windows Updates & Activation
Solved Security Center Fail, Error code: 0x80070424 System Security
Solved Windows Update Failures: Code 80070BC9 and 9C57 Windows Updates & Activation
Update fail w7 x64: KB2758857. Error code 8000FFFF Windows Updates & Activation
.NET updates fail to install with error 800B0100 and 80070308 Windows Updates & Activation
Solved Windows Update error when installing SP1 code 80070BC9 Windows Updates & Activation
Network credentials fail (Error code 0x80070056) Network & Sharing

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 06:57 PM.
Twitter Facebook Google+

Windows 7 Forums

Seven Forums Android App Seven Forums IOS App

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33