Fix: Error message “Installation failed” when installing Update for Microsoft Outlook 2010 in Office 365

This article may interest you, if when you try to install the Update for Outlook 2010 from Office 365 Desktop Setup and the install process fails.

On install fail, you receive this error message: “Some updates could not be installed.” Also, in the dialog box, the status of the Update for Outlook 2010 is displayed as “Installation failed.”

You encounter this issue because the update can only be installed on a computer that is running the release-to-manufacturing (RTM) version of Microsoft Outlook 2010 14.0.4760.1000 or a later version.

Note: Office 2010 SP1 Beta is not supported.

To rsolve this issue, Microsoft KB2134388 recommends, you upgrade Outlook 2010 to the release-to-manufacturing version 14.0.4760.1000. Do not upgrade to Microsoft Office 2010 SP1 Beta.

This fix applies to Office 365 for enterprises, Office 365 for small businesses & Outlook 2010.

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