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Microsoft Issues Fix for Office 2010 SP1 Update Issue

Microsoft late last week issued a fix to address Office 2010 Service Pack 1 (SP1) installation failures that some users have experienced.

The failures, as described at this Microsoft support page (ID 2553092), can happen when using the Microsoft Update service to install SP1. Microsoft announced the availability of this service pack in late June, providing users with a roll-up of previously released updates, plus a few new features and fixes.

SP1 was released initially just for manual installs, but Microsoft promised automatic distribution would occur after 90 days. This 90-day interval may have arrived a little too early for some, it seems.

Users tripped up by this SP1 install problem via Microsoft Update will see two error messages that can help to identify this issue. The error messages are labeled "1935" or "78F." These messages typically pop up in cases "when Office 2010 was originally installed by using a temporary storage device."

It turns out that the SP1 install problem is associated with a reference within the Windows Installer program, which sometimes points to "a drive that no longer exists, or to a removable media device that contains no readable media," according to the support article. In other words, it can point to a CD or DVD drive that contains no disk.

A real simple workaround can be tried. Microsoft suggests that "before you install Office 2010 SP1, put a readable DVD or CD in your optical drive or connect a USB drive."

However, those users wanting to get the fix for the problem can download the 32-bit version at this page. Users with the 64-bit version can find that fix here. More information on applying SP1 to Office 2010 can be found in this Microsoft TechNet library article.

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