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Dear @Sarvesh Kumar
Thank you so much for contacting Microsoft Q&A Forum.
Based on your description, I understand that you are trying to upload an Outlook Add-in manifest (application-v-1-0-0-0.xml) via the Office 365 Admin Center. Although the manifest passes validation and works when sideloaded locally, the upload fails with the error:
"Exception thrown when extracting the given manifest"
Status Code: WxpoFailureError1
This error typically indicates a backend issue during the manifest extraction process, not necessarily a problem with the manifest itself.
As a forum moderator, I have limitations in my testing resources and cannot access the internal databases to check and solve this issue further. So, I highly recommend that you submit a service request through the Microsoft 365 Admin Center for the most efficient help. This will allow our dedicated support engineers who have broader diagnostic tools and permissions to investigate and assist you more effectively.
In the meantime, I also tried my best to help you, and I found a partially similar case that you can check if I can help you before reaching to Microsoft Support: Integrated Apps & Central Deployment Fails | Microsoft Community Hub
In this case, they suggested:
1.Double-check the manifest file:
- Ensure it adheres strictly to Office Add-in manifest schema.
- Validate it using the Office Add-in Validator.
References:
Validate an Office Add-in's manifest - Office Add-ins | Microsoft Learn
Office Add-ins manifest - Office Add-ins | Microsoft Learn
2.Try a different browser or incognito mode: some users have resolved deployment issues by switching browsers or using private/incognito mode.
3.Confirm admin permissions to make sure the account used for deployment has Global Admin rights and the necessary roles.
4.Check Microsoft service health status: visit the Service Health Dashboard in the Admin Center to see if there are any ongoing issues affecting add-in deployment. Reference: How to check Microsoft 365 service health - Microsoft 365 Enterprise | Microsoft Learn
I appreciate your understanding and truly apologize that this issue is beyond of my control due to forum moderator role's limitations. This is all of what I can do as much as I can to help you and I hope they will help you to solve it soon.
Wish you a good day!
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