Multiple Instances of the Add-In are Installed to One User

 

 

[ This article is work-in-progress ]

 

 

Symptoms

User is having several (2 or more) copies installed on the mailbox. Ribbon contains 2 icons and Manage Add-In list contains 2 items as well.

 

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Causes

Manifest.xml of the Add-In contains the add-in ID (e.g. <Id>50936338-55a0-441e-a889-d4e95c9667fd</Id>) and technically MS Exchange allows installing only one instance of the Add-In with the same ID. Add-Ins from different tenants (test\prod) may have different IDs, so that’s why multiple add-ins can be installed.

 

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Resolution

To resolve the issue the following steps should be proceeded:

1. Delete all copies of the Add-In using any convenient method (via Groupware Settings, OWA (Outlook Web Access), or MS Exchange Admin Center)
2. Identify the target SAP Cloud for Customer tenant and deploy the Add-In from that tenant (either from Groupware Settings or manually through MS Exchange Admin Center using manifest.xml)