I have Windows Vista 32bit on my PC. For the past month or so I've realised that most of the updates are failing, usually error code 800BO100. After some searching I tried to install the system readiness tool, but this keeps failing, with a error message that my computer doesn't need this update. Also getting error code 80071A91 for which I can't find an answer. Your help would be much appreciated, but please keep it simple as I have only medium knowledge. Thanks

Hello, try proceeding like that: Run chkdsk /r /f Run sfc /scannow Download and install system update Readiness tool your OS Disable all security software that you have Reset Windows Update components If this does not help, perform a repair install (In-place upgrade) 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

Hi, Could list some of the updates? I would suggest you to follow the methods provided below and check if it helps. Method 1: First check windows update history to find the error code for the failed updates. Right click on the failed update and click on view. Check for the updates that failed in Update history. a. Open Windows Update by clicking the Start button. In the search box, type Update, and then, in the list of results, click Windows Update. b. In the left pane, click View update history. c. To view more information about an update, double-click it. Method 2: I would suggest you to resetWindows Update components and check if it helps. To do so run theFixitform the link provided below. http://support.microsoft.com/kb/971058 Method 3: If the issue still persists I would suggest you to run theSystem Update Readiness Tool. Follow the troubleshooting steps provided in KB article below and check if it helps. http://support.microsoft.com/kb/947821 Regards, Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.