When running the SharePoint 2010 prerequisite installer (PrerequisiteInstaller.exe) on a Windows 2008 R2 box with SP1 installed, the installer may fail with the following error:
“There was an error during installation. The tool was unable to install Hotfix for Microsoft Windows (KB976462)”
Additionally in the prerequisite installer log, you may see a sequence similar to the following:
<Date and Time> - Beginning download of Hotfix for Microsoft Windows (KB976462)
<Date and Time> - http://go.microsoft.com/fwlink/?LinkID=166369
<Date and Time> - Download of "Hotfix for Microsoft Windows (KB976462)" completed successfully
<Date and Time> - Installing Hotfix for Microsoft Windows (KB976462)
<Date and Time> - "C:\Windows\system32\wusa.exe" "C:\Users\<LoggedonUser>\AppData\Local\Temp\KB98ACC.tmp.msu" /quiet /norestart
<Date and Time> - Install process returned (-2145124329)
<Date and Time> - [In HRESULT format] (-2145124329)
<Date and Time> - Last return code (-2145124329)
<Date and Time> - Error: The tool was unable to install Hotfix for Microsoft Windows (KB976462). If Hotfix for Microsoft Windows (KB976462)
is already installed you may need to uninstall it and run prerequisite installer again.
<Date and Time> - Last return code (-2145124329)
<Date and Time> - Cannot retry