Microsoft office customization installer there was an error during installation

Vote Up 0 Vote Down. Best Answer. Microsoft Office Customization Installer error Hi Dudley, It is possible that the drive that it is looking for is not the native drive in your computer, If you are part of a network chances are it might be pointing to another computer in the network.

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Back to top. LawMaster Knowledge Base. Page tree. Browse pages. In fact, this helped clear the registry entry, referred to above. I had the same problem when deploying a new version of our VSTO word addin. After fiddling for 2 hours I found out that the Installation folder URL that you set in the properties of the solution where it upgrades from is case sensitive and stupidly needs to be the same case as the initial installation URL.

I was testing deployment after making the addin setup and facing the same problem when trying to install. In your case, after you do publish, it would be pointing to. Change this to your published vsto path. Now try to install, should work fine. You can test your auto upgrade options the same way, i. What helped me in this issue was uninstalling the plugin from Control-M which I installed from my Published folder. And Clean the solution.

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Asked 12 years, 3 months ago. Active 2 months ago. Viewed 31k times. Improve this question. Have documented the step by step process that i followed to fix it after searching heavily from internet over here censore.

Add a comment. Active Oldest Votes. Restart Excel and you should be good to go. Improve this answer. Charles Chen Charles Chen 1, 12 12 silver badges 22 22 bronze badges. I've tried all sort and haven't seen this solution anywhere else but it worked perfectly. Literally a copy paste from: answers.