Q: Windows Installer Error 1635 (Vista)

When attempting to install Excel Analysis Toolpak add-in, the installation fails. I get Windows Installer Error 1635 and references to "analys32.dll" and "atpvbaen.xlam."  I'm using Office 2007  and Vista.



If the repair for Office 2007 does not help, then try to uninstall and re-install Office 2007 again.


Follow the articles below to uninstall Office 2007:

For 32 bit Operating system: Follow this link: 

For 64 bit Operating system: Follow this link:


Install Windows Installer 4.5 for Vista. Check the article below to download and install Windows Installer 4.5: 


Check the articles below for error 1635


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Views: 1,520 Last updated: March 15, 2018 Applies to: