Microsoft has released an update to solve various problems that occur during the installation of Service Pack 1 (SP1) for Office 2010released.
SYMPTOM:
When you use Microsoft Office 2010 Service Pack 1 (SP1) install using Microsoft Update, you receive the following error message:
Code 78F Windows Update encountered an unknown error.
If you are downloading and the SP1 package from Microsoft Download Center, you receive the following error message:
The installation of this packed failed.
The Officesuitewwsp1-x-none_msplog .log file that is generated during the installation contains an error message that resembles the following:
Error 1935. An error occurred during the
CAUSE:
This update fixes the error message that is reported during product installation from the Add/Remove Programs tool in Control Panel. SP1 does not need to be installed for the error message should be displayed.
This problem may occur if the Windows Installer encounters a reference to a drive that no longer exists, or to a removable media device that contains no readable media. For example, this problem may occur when the Windows Installer a reference to a blank DVD or CD drive.
WORKAROUND:
Before you install Office 2010 SP1, put a readable DVD or CD into the optical drive, or connect a USB drive.
SOLUTION:
You can solve this problem, download and install the following update before you install Office 2010 SP1. This update reduces installation problems of updates installed on Microsoft Office 2010.
Download Update (32-bit)
Download Update (64-bit)
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