Error opening Excel 2007: "The Windows Installer Service could not be accessed."

Original Title: "Windows Installer Error"

I have Microsoft Office Home & Student 2007.  When I try to open Excel I get a pop-up that says "The Windows Installer Service could not be accessed.  This can occur if Windows Installer is not correctly installed".  I have had this on my computer for several years with no problems until today.  How do I fix this problem?

Question Info

Last updated March 29, 2018 Views 920 Applies to:

Register the Windows Installer Service and check if it lists in the Services. To do that, do the following:


1. Click Start, and then click Run.

2. In the Open box, type msiexec /regserver, and then press ENTER.

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