Article ID: 2581903 - View products that this article applies to.
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)
SP1 for Windows 2008 R2 already includes the fixes available in KB976462. The installer does not detect that the required fix is already there and tries to install it again which fails.
Run the prerequisite installer a second time. The second time it should recognize that an equivalent fix has already been installed and not try to reinstall it.
To prevent this problem from occurring -- for example, if you’re doing scripted installs of SharePoint 2010 on Windows 2008 R2 SP1, you need to configure the .Net Framework server feature before running the prerequisite installer using one of the following methods:
Automated steps to enable .Net Framework 3.5.1 features:
Manual Steps to enable .Net Framework 3.5.1 features:
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.