We have a Excel Web Addin, that was deployed to a group of users using the Office 365 Admin Center. But the add-in is not visible in Excel 2016 (Version 1803,Build 9126.2275, Click to Deploy) for those users.
Fiddler trace shows the following when the user tries to refresh the "Admin Managed" add-in dialog box.
Fiddler Trace
<MessageText>User must have a mailbox for name resolution operations.</MessageText>
<ResponseCode>ErrorNameResolutionNoMailbox</ResponseCode>
I also came across this post "No add-ins currently available." when deploying add-in using Centralized Deployment
that talks about enabling Exchange. I am not sure what that really means.
So any help is appreciated in understanding the issue and resolution.
Thanks -kudlur
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.
Could you try running through the compatibility checking steps outlines here? It will help provide more detail on the exact issue.
Download the compatibility checker here: https://www.microsoft.com/en-us/download/details.aspx?id=55270
Run the compatibility checker Start an elevated PowerShell.exe window.
Run the \Import-Module O365CompatibilityChecker\ command.
Run the \Invoke-CompatibilityCheck\ command, which prompts you for TenantDomain (for example, TailspinToysIncorporated.onmicrosoft.com) and TenantAdmin credentials, and then requests consent.
You can also find more ways to debug in this help article: https://learn.microsoft.com/en-ie/office365/admin/manage/centralized-deployment-of-add-ins?redirectSourcePath=%252farticle%252fDetermine-if-Centralized-Deployment-of-add-ins-works-for-your-Office-365-organization-b4527d49-4073-4b43-8274-31b7a3166f92&view=o365-worldwide#BKMK_UserAndGroupAssignments?omkt=de-CH&ui=de-DE&rs=de-CH&ad=CH
Thanks, Alan