ResourceNotFound error while trying to reach outlook calendar using ms-graph.

Question

ResourceNotFound error while trying to reach outlook calendar using ms-graph.

parth 31

I am following this tutorial https://github.com/Azure-Samples/ms-identity-msal-java-samples/tree/main/4.%20Spring%20Framework%20Web%20App%20Tutorial/2-Authorization-I/call-graph and as expected same is working fine. For proof of concept purposes, I added another endpoint in the same Java Spring app and tried to reach the calendar with something similar like this :

GraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider( authProvider ).buildClient();

CalendarCollectionPage calendars = graphClient.me().calendars()
.buildRequest()
.get();

Same is leading to com.microsoft.graph.http.GraphServiceException: Error code: ResourceNotFound Error message: Resource could not be discovered. Rather I am getting null as calendars reference variable.

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Answer 1

CarlZhao-MSFT 46,376

Hi @parth

It looks like your users don't have Exchange Online mailboxes, make sure you have created Exchange Online mailboxes for your users before calling the api endpoint. Or assign an Exchange Online license to your user account, which will automatically create a mailbox for the user.

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parth 31 Reputation points

2022-08-24T21:14:07.24+00:00

Hi @CarlZhao-MSFT
Thanks for replying.

A little background, actually for the proof of concept purposes, I am trying to reach my own outlook account using ms-graph api with a Java app. With the same email address I have an account on Azure Portal, and I have registered an app in Azure active directory, as that's what is needed to write a o-auth2 client for Microsoft services.

Even after getting Office 365 license added to the same email, I am not seeing anything on the Azure active directory admin center > Users/<userName>/licenses, on the other hand the weblink you have shared is not letting me sign in and asking for a work/school account.

On searching for "how to assign exchange online license to a user" on internet I found a MSFT tutorial series where in the instructor is first setting up the Office 365 E3 account inside which she added a tenant, then an admin-user first and subsequently a test-user to which she showed how to assign licenses.

While following tutorial I have provided link of in the starting post, there is no mention of anything like Office 365 E3. I mean bottom line is, even after adding Office 365 license to the email address I am seeing nothing on Azure portal, could you please help?
CarlZhao-MSFT 46,376 Reputation points

2022-08-26T03:03:31.257+00:00

Hi @parth

Do you mean that you have granted users an O365 license according to the documentation, but it is not visible in the Azure portal? I just did a test, and if you've already granted a license to your users at Microsoft 365 admin center, that license is definitely visible in Azure AD. Please check!
parth 31 Reputation points

2022-08-26T17:20:10.117+00:00

Thanks for replying @CarlZhao-MSFT , the web link you have provided above for adding the licenses is not allowing me to sign in with the outlook email address I have. It is giving me an error: You can't sign in here with a personal account. Use your work or school account instead. I have the Azure account with the same email address and I got an Office 365 license attached to the same email as well.
parth 31 Reputation points

2022-08-29T14:27:52.557+00:00

@CarlZhao-MSFT I am still stuck on the same issue, could you please help? Do I also need a work/school account for using the Graph API?

Also, I would like to add, nowhere in the tutorials, videos, and documentation I could see MS mentioning explicitly the requirement of licensing, if possible please share a link on what all licenses are needed to actually bring so-called data and intelligence using Graph-API.

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ResourceNotFound error while trying to reach outlook calendar using ms-graph.

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