Are you trying to update a mailbox record in Microsoft Dynamics CRM 2013 on-premise and getting the "Allow to use Credentials for Email Processing" field grayed out like the following? If yes then this article will help to enable this option.
![credentials]()
The "Allow to use Credentials for Email Processing" option under mailbox in Microsoft Dynamics CRM 2013 allows us to store credentials to access email services. If we are using Microsoft Dynamics CRM 2013 on-premise then we need to configure IFD to enable this option, but if you don't want to configure IFD we have the following workarounds to enable it.
- By Enabling https binding
- By Using registry key
In this article we will discuss the first option. We need a SSL certificate to bind with the CRM website. As we are using our demo VPC, we have created a wild card certificate. Use the following procedure to bind a SSL certificate and configure HTTPS binding to the CRM website.
- Create a SSL certificate. (Please refer to our earlier article to create a wild card certificate.)
- Run the IIS Manager.
- Select the Microsoft Dynamics CRM website.
- Click on Bindings… under Action.
- Click on Add under the Site Binding dialog.
- Select https from the Type dropdown.
![Microsoft Dynamics CRM Home]()
- Select your SSL certification under the SSL certificate dropdown and keep other setting as the default.
- Click Ok and Close.
- Navigate to Microsoft Dynamics CRM Deployment Manager.
- Select Microsoft Dynamics CRM and select Properties under Actions.
- Select Web Address table and click on HTTPS binding type.
- Change port with the port that we used in https binding under Step 7 (443 in our case) in all services.
- Click Ok to close and do IISRESET.
![Allow to use Credentials for Email Processing]()
Now navigate to the mailbox record in CRM, you should get "Allow to use Credentials for Email Processing" enabled.
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