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Today I came across an error whilst trying to install Microsoft Office 2007 on an XP machine with service pack 3. The error occured part way through the installation process and caused the installer to roll back and give the following message.

Microsoft Office 2007 encountered an error during setup. The Windows Installer service cannot update one or more protected Windows files.

Well that’s not very useful is it!  I did a bit of searching as you do when you have a problem and came across the solution. Read the rest of this entry »