Failed with error: Please check your account info and/or permissions and try again. Details: REST API is not yet supported for this mailbox

We often take a trail Dynamic 365 CRM instance from

https://trials.dynamics.com/Dynamics365/Signup

but the trail instance will only give Dynamics 365 Customer Engagement Plan Enterprise Edition and often we wonder why the emails are not going out and status is always pending send.

This also applies when you try to configure Microsoft Flow and you ran into below error when configuring any step that require you to play with Office 365 services.

Failed with error: 'Please check your account info and/or permissions and try again. Details: REST API is not yet supported for this mailbox. This error can occur for sandbox (test) accounts or for accounts that are on a dedicated (on-premise) mail server.

You might have guess the probable solution to the problem and yes, we need to obtain subscription to the office 365 services as well.

How to add Office 365 Mail Functionality after getting Dynamics 365 CRM Trial instance.

For obtaining subscription accordingly, we need to navigate to Office 365 portal and navigate to 

Billing -> Purchase Services

Then look for Office 365 Enterprise E3 product, go for start free trail or Buy Now as you required.

Microsoft may further ask you about the Credit Card information to keep the unnecessary spam out of the system. Don’t worry Microsoft will not charge for the free trail.

We are finished with setting up the office 365 for our smooth business operation and solving other technical problem which we might be getting from it.

I hope I added a small value by solving the problem.

Thanks,
Vipin Jaiswal
vipinjaiswal12@gmail.com

Here are some other links for Troubleshooting and learning:

·       Plugin in Dynamic 365 CRM

·       Connect to Dynamic 365 CRM from Console App using Azure Authentication

·       Could not load file or assembly 'System.Net.Http, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies

·       Unable to Login to Dynamics CRMOrganizationWebProxyClient is null

·       Assembly 'Microsoft.Crm.Sdk.Proxy' with identity 'Microsoft.Crm.Sdk.Proxy, Version=9.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' uses 'Microsoft.Xrm.Sdk, Version=9.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' which has a higher version than referenced assembly 'Microsoft.Xrm.Sdk' with identity 'Microsoft.Xrm.Sdk, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'

·       Could not load file or assembly 'Microsoft.Xrm.Sdk, Version=9.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference.

·       Could not load file or assembly 'Microsoft.Xrm.Sdk, Version=6.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies