After 3 days Windows Update finally quit searching and gave me an error 8024402C. I tried Dalai's webpage at http://wu.krelay.de/en/ and it would not complete due to appidsvc service failed to stop. I tried installing updates with the stand alone installer and it would only install the first update all other updates said they were not require for my computer. So I searched remedies for error 8024402C and did the following along with making sure internet explorer was set to automatically detecting settings...
Please see msvista2001's thread vista stuck on "checking for updates" in the MS Answers forum. These days it's not unusual for Vista SP2 users to see these 8024402C errors when they run the MS FixIT tool for Windows Update. The Microsoft support article I got an error code from Windows Update shows that error 8024402C for Vista is a generic error warning that Windows Update had a problem connecting to the backend Microsoft update server.
Did you follow STEP # 1 in the 16-Jun-2016 instructions m#l's thread Updates not working, it has been searching for updates for hours in the MS Answers forum and disable your automatic Windows Updates (Never check for updates) and re- boot to stop any Windows Update session running in the background? I suspect it wasn't necessary to reconfigure the DNS server address in the TCP/IP settings for you network connection, especially if the LAN settings in IE were ready set for automatically detection (Tools | Internet Options | Connections | LAN settings | Automatic configuration | Automatically detect settings). The re-boot of your computer probably helped more than any change you made to your TCP/IP settings, so monitor your system for a few days just in case these new settings create problems with your network connection.
IE9 LAN Automatic Configuration Aug 2016.png 8.34KB
I'm not certain if by "first update" you meant the oldest Windows kernel-mode driver (Win32K.sys) update KB3078601 (rel. 18-Aug-2015) or the latest KB3177725 (rel. 09-Aug-2016), but STEP # 3 of the instructions in m#l's thread should have helped you determine which updates on Dalai's webpage at http://wu.krelay.de/en/ were missing and needed to be installed on your system. The MS support article "The update is not applicable to your computer" error when you install Windows updates notes that this "not applicable" error usually appears if you run a standalone update package (.msu file) that is the wrong bitness for your OS (e.g., you try to install a 64-bit installer on a 32-bit OS) or the update is already installed on your system. You said in your original post that "Last updates ran great on July 15, 2016" so STEP # 3 of the instructions should have confirmed that the the latest KB3177725 (MS16-098: Security Update for Windows Kernel-Mode Drivers: August 9, 2016) was the only Win32K.sys update missing from your system.
Dalai's workaround is only a temporary workaround and your slow Windows Updates will likely return when the September 2016 Patch Tuesday updates are released on 13-Sep-2016 (the second Tuesday of the month). If a new Win32K.sys update is released next month a download link will be added to Dalai's webpage shortly after 13-Sep-2016, and that new Win32K.sys update will have to be pre-installed to prevent Windows Update from getting stuck again when you try to install your September 2016 Patch Tuesday updates.
32-bit Vista Home Premium SP2 * Firefox v48.0.1 * NIS v22.214.171.124 * MBAM Premium v2.2.1
Edited by lmacri, 19 August 2016 - 05:30 PM.