Error code: 800B0100 and 8009200D and 0x800106ba in Windows Vista

[No. 4]

I recently upgraded one of my XP running desktop Windows Vista Ultimate. Installation went fine without any problem, even installed drivers, programs and Windows Updates. It worked fine for two days but today morning when i started the system i received an error message from Windows Defender saying:

"Application failed to initlalize 0x800106ba. A problem caused this program's service to stop. To start the service, restart your comptuer or search help and support for how to start a service manually."

Also when i try to run Windows Update, it gives me Error Code 800B0100 and Error 8009200D. Here are some more details about the error:

Update for Windows Vista (KB929735)
Installation date: 03.02.2007 17:57
Installation status: Failed
Error details: Code 800B0100
Update type: Optional
Install this update to resolve an issue that prevents Windows Search from returning a complete set of results when a search is performed using the date option and a non-Gregorian calendar is in use.

More information:
http://go.microsoft.com/fwlink/?LinkId=80403

More information:
http://support.microsoft.com

As i said this is Windows Vista with Internet Explorer 7. Any help would be appreciated.

[Viceman]

Use the System Update Readiness Tool to resolve this issue. This tool will scan you computer for inconsistencies that may cause errors to occur. To run the System Update Readiness Tool, follow these steps:

• First download the System Update Readiness Tool from here.
• Click the Start button, then type msinfo32 in the Search box. Click msinfo32.
• Your version of Windows will be listed next to OS Name and your file type (x64 or x86) will be listed next to System Type.
• Choose the appropriate language in the Change Language list, and then click Download.
• When you are prompted to do so, click Run to start the installation.
• Follow the onscreen instructions to install the System Update Readiness Tool.