Dont allow COM/VSTO outlook plugins to disable add-ins
As a user and developer of outlook 2016 add-ins I have currently run into an issue for which there is no resolution.
COM/VSTO addins appear to have the ability to disable add-ins developed using the new add-in architecture.
See issue reported here to the developers of the 'FindTime' add-in.
A customer of ours recently reported this issue with the brand new plugin we just developed, where our add-in was 'greyed' out in the 'Compose' view. The root cause was because the user had the 'Salesforce for Outlook' COM plugin installed which was disabling all other add-ins.
It is of vital importance that this issue be addressed if the adoption of the new add-in plugin architecture is to be a success.
Developers using the new platform have to conform to various rules aimed at ensuring fair play between other add-ins.
On the other hand we have no protection against the legacy COM/VSTO addins.