When installing the update for Web Components that is described in Knowledge Base article 967830, “Description of the update package for Communications Server 2007 R2, Web Components: April 2009”, the following error can occur and block the installation of the update: "An error occurred and the installer was interrupted before Microsoft Office Communications Server 2007 R2 Web Components server could be installed." Troubleshooting can be challenging as this error provides no hint of how to resolve the problem.

Author: Thomas Binder and Rui Maximo

Publication date: July 2010

Product version: Office Communications Server 2007 R2

When installing updates for Office Communications Server 2007 R2, the update included in Knowledge Base article 967830 might fail and display the following error message: "An error occurred and the installer was interrupted before Microsoft Office Communications Server 2007 R2 Web Components Server could be installed" as shown in Figure 1.

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