

If a user acquires the Office Add-in from AppSource and the equivalent COM add-in is already installed, then Office will: AppSource acquisition of an Office Add-in The following scenarios describe what happens depending on how the user acquires the Office Add-in. Specifying an equivalent COM add-in in the manifest has no effect on other platforms, like Office on the web or on Mac. As an entry on the ribbon manager (Excel, Word, and PowerPoint only).Therefore, your Office Add-in will still appear in the following locations within the UI. Office only hides the ribbon buttons of the Office Add-in and doesn't prevent installation.

When an equivalent COM add-in is specified, Office on Windows will not display your Office Add-in's user interface (UI) if the equivalent COM add-in is installed. Select OK to put the update into effect.Set Value to the ProgId of the equivalent COM/VSTO add-in.Important: Do not add curly braces around the entry. Set Value name to the Id found in the web add-in's manifest.In the dialog Outlook web add-ins to deactivate: Open the link to edit the policy setting. Select the setting Deactivate Outlook web add-ins whose equivalent COM or VSTO add-in is installed. Navigate to User Configuration > Administrative Templates > Microsoft Outlook 2016 > Miscellaneous. Open the Local Group Policy Editor ( gpedit.msc).

Then, Outlook on Windows will use the COM add-in instead of the web add-in, if they're both installed.ĭownload the latest Administrative Templates tool, paying attention to the tool's Install Instructions. Run the \Invoke-Compatibilit圜heck\ command, which prompts you for TenantDomain (for example, ) and TenantAdmin credentials, and then requests consent.To declare compatibility between your Outlook web add-in and COM/VSTO add-in, identify the equivalent COM add-in in the group policy Deactivate Outlook web add-ins whose equivalent COM or VSTO add-in is installed by configuring it on the user's machine. Run the \Import-Module O365Compatibilit圜hecker\ command. Run the compatibility checker Start an elevated PowerShell.exe window. Based on the error message, I'd assume you're having issues with users not being assigned mailboxes, which are required to enable Centralized Deployed add-ins.Ĭould you try running through the compatibility checking steps outlines here? It will help provide more detail on the exact issue.ĭownload the compatibility checker here:
