Problem area: windows update; Error: TRUST_E_NOSIGNATURE (0x800b0100) __Message: installation error prevented the service pack 2 windows systems (KB948465) _

Problem area: windows update; Error: TRUST_E_NOSIGNATURE (0x800b0100)
Message: Installation error prevented the service pack 2 windows systems (KB948465)

http://support.Microsoft.com/kb/956702

«Error message when you try to use Microsoft Update or Windows Update Web sites to install updates: «0x800B0100»»

Method for Windows Vista or Windows Server 2008 to resolve this issue, run the tool (Checksur.exe) system update. To do this, follow these steps:

  1. Download and run the system update tool. This tool runs an ad hoc analysis of inconsistencies that might prevent future maintenance operations. For more information about how to download and run the Checksur.exe tool, click on the number below to view the article in the Microsoft Knowledge Base:

    947821 (http://support.microsoft.com/kb/947821/) Description of the update readiness tool for Windows Vista system
  2. Try to install updates again.

http://support.Microsoft.com/kb/947821/

"Description of the preparation tool system update for Windows Vista for Windows Server 2008 and for Windows 7"

If the above solves the problem:

It comes with Vista, upgrade install and activate Forum.

You will get the best help for any problem of Update/Service Pack update Vista Forum; the link below:

http://social.answers.Microsoft.com/forums/en-us/vistawu/threads

When you repost here, kindly include this error Code, and exactly what is happening when you try to update.

In this way, you will receive the best help.

See you soon.

Mick Murphy - Microsoft partner

Tags: Windows

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