Programmatic install/uninstall of Excel-Addin.

[Suki Gill]

Hi
At the moment I don't have a stremalined approach to install and upgrade the
Excel-Addin on a users machine.

Currently to upgrade I require the user to shutdown all excel instances
and then run a script (basic file copy).

I was wondering if there was a  programmatic way to:
1) install a new add-in whilst excel is running.
2) remove an existing version of an add-in while excel is running.

Many Thanks

Suki

[Kedar Kulkarni]

User Ideally need to restart excel as unregistering xll and registering xll has caused crashes and as per my understanding it is not supported fully (but I may be wrong). What we used to do was, install addin in a new version subfolder and change registry key to point to that location and ask user to restart excel. Overwriting files is a problem as they could be locked. May need code changes if there are dependencies but it worked for us good.

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