Microsoft Support

Microsoft Home Page

Sign in

Select the product you need help with

Select a solution

Error: Windows failed to start. A recent hardware or software change might have caused the issue after you install Windows Updates
Error: Windows failed to start. A recent hardware or software change might have caused the issue after you install Windows Updates
Windows Update freezes when you install updates in Windows 8, Windows 7, or Windows Vista
Helps resolve issues in which Windows Update freezes when you install updates.
Windows Update or Microsoft Update repeatedly offers the same update
Describes how to troubleshoot the problem where you are repeatedly offered the same update in Windows Update or Microsoft Update.
Windows Update error 800B0100
See steps you can take to solve Windows Update error 800B0100.
Windows Update error 80070643
See steps you can take to solve Windows Update error 80070643.