Windows 7 Update Error 800B0100

Update Error 800B0100

I just installed Windows 7 Home Premium 64bit over the original XP Pro on a fully maintained Dell 490. After installing all the Windows Updates recommend, only one remains; Windows 7 Service Pack 1. Installation runs to 25% then fails and reports a Windows Update Error 800B0100. I have run the System Readiness tool and it re-installed KB947821 but again Service Pack 1 installation fails at 25% with a Windows Update Error 800B0100. Any Ideas?

Question Info

Last updated October 24, 2018 Views 3,413 Applies to:

1. Do you have backups of ALL the changes CCleaner's Registry Cleaner has EVER made to your computer since you did the clean install of Win7 64-bit (on the computer where WinXP 32-bit had been installed)?

2. Have you run the Windows Update automated troubleshooter from start to finish & rebooted yet? [Tip: Access the above link via Internet Explorer only!]



Free unlimited installation and compatibility support is available for issues related to Windows 7 Service Packs. Availability of chat, phone or e-mail support differs depending on your geographic location. Some issues may require more advanced support for which there may be a charge:

~Robear Dyer (PA Bear)
Microsoft MVP (Windows Client) since October 2002

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