I recently decided to upgrade my Windows 7 Ultimate 64-bit system to Service Pack 1. I opened Windows Update and selected only the SP1 update, then installed. I did this just before leaving for school, as my previous experience of installing Service Packs tells me it can take a great deal of time. Upon arriving home 4hrs later, I checked to see if the installation had been completed, but was surprised to see that the progress bar was only at about 30% And there was no evidence of a system restart. I tried to stop the installation but nothing happened when I clicked the 'stop installation' button. After trying this multiple times, I ended the explorer.exe process and started it again. Windows Update was gone and there seemed to be no issues. I restarted my system just to be sure and there was no issues in shutting down or booting up. I decided to try and install it again this afternoon but when I checked the box next to the update and began it, Windows Update will remain at (0KB total, 0% complete). This occurs with any update I attempt through Windows Update. I attempted a System Restore, but upon restart was given the error that it failed, stating that some files could not be restored. Windows Update still remains broken after numerous restart and restore attempts. What steps should be taken to get Windows Update working again?

Hello, try the following: Run chkdsk /r /f and sfc /scannow Download and install Windows Update System Readiness tool for Windows 7 Reset Windows update components Disable all security softwares Uninstall MUI packs Download and install manually SP1 If this does not help, I think it will be better to perform a repair install of your OS. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator

Hello, try the following: Run chkdsk /r /f and sfc /scannow Download and install Windows Update System Readiness tool for Windows 7 Reset Windows update components Disable all security softwares Download and install manually SP1 If this does not help, I think it will be better to perform a repair install of your OS. This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified IT Professional: Enterprise Administrator

Thank you, elusive Mr X for your quick reply. I worked through the first 4 of your troubleshooting methods and the problem still seemed to be occurring. So after that I figured I'd just let it sit for a while and see if anything happened, and sure enough about about 45minutes the update started downloading. I did notice that my firewall profile had been reset to public, so that may have caused the issue. Resetting Windows Update may have also solved the problem. Either way, I am now happily running SP1. Thankyou for your assistance.