Question

I’m having some issues deploying a Visio addin.
Running the VSTO file works on my computer, but whenever I try and move it to any other user’s computer it throws an error on deployment.
I thought it might be a setting I’d set in the project properties so I created an entirely new plugin project and set it to display a message box on startup.
The error I’m getting is:

An error occured during customization install.
The expected element “addIn” was not found in the XML.

Answer 1

This is caused by an issue with Clickonce.
I found a workaround by installing the addin using MSI.
This Guide was a lot of help.

Taken from the section about registry settings for the msi installation:

It is important to note the ‘|vstolocal’ value appended to the end of the Manifest value. This informs the VSTO runtime that it is locally installed and to not invoke the ClickOnce installer.