
16386, and this version will not self-update because the file wuident.cab (as of the version digitally signed July 14, 2012) provided by Microsoft's Windows Update servers contains an explicit instruction that WU versions and should not self-update. In order to successfully install Service Pack 1 you need at least Windows Update version. The underlying problem is that the Windows Update self-update mechanism is not working. Why won't service pack 1 install properly and how do I fix it? There may also be an error 0x80190194 appearing, associated with the URL. There is a message saying "Skipping SelfUpdate check based on the /SKIP directive in wuident". On checking the Windows Update log ( WindowsUpdate.log) the client version is.


However, service pack 1 is not in fact installed, and will be detected as needed again on the next update check. Windows Update says that the update was installed successfully. However, shortly after the installation starts the wizard disappears. When you attempt to install Windows Vista service pack 1, the service pack installation wizard appears, presenting the license agreement and so on. Once all other updates are installed, Windows Vista service pack 1 is offered.

If you install Windows Vista RTM and run Windows Update, many updates are offered and will successfully install.
