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This section describes the ports that are used for Dynamics 365 Customer Engagement (on-premises). This information is helpful as you configure the network when users connect through a firewall.
Network ports for the Microsoft Dynamics 365 web application
The following table lists the ports used for a server that is running a Full Server installation of Dynamics 365 Customer Engagement (on-premises). Moreover, except for the SQL Server role, and the Microsoft Dynamics 365 Reporting Extensions server role, all server roles are installed on the same computer.
| Protocol | Port | Description | Explanation |
|---|---|---|---|
| TCP | 80 | HTTP | Default web application port. This port may be different as it can be changed during Microsoft Dynamics 365 Server Setup. For new websites, the default port number is 5555. |
| TCP | 135 | MSRPC | RPC endpoint resolution. |
| TCP | 139 | NETBIOS-SSN | NETBIOS session service. |
| TCP | 443 | HTTPS | Default secure HTTP port. The port number may differ from the default port. This secure network transport must be manually configured. Although this port is not required to run Dynamics 365 Customer Engagement (on-premises), we strongly recommend it. For information about how to configure HTTPS for Customer Engagement, see Make Microsoft Dynamics 365 client-to-server network communications more secure. |
| TCP | 445 | Microsoft-DS | Active Directory service required for Active Directory access and authentication. This is used by Server Message Block (SMB) during organization creation to create a 'template database' from the installation location on the Dynamics 365 Server to a UNC path on the SQL server. |
| UDP | 123 | NTP | Network Time Protocol. |
| UDP | 137 | NETBIOS-NS | NETBIOS name service. |
| UDP | 138 | NETBIOS-dgm | NETBIOS datagram service. |
| UDP | 445 | Microsoft-DS | Active Directory service required for Active Directory access and authentication. This is used by Server Message Block (SMB) during organization creation to create a 'template database' from the installation location on the Dynamics 365 Server to a UNC path on the SQL server. |
| UDP | 1025 | Blackjack | DCOM, used as an RPC listener. |
Important
Depending on your domain trust configuration, additional network ports may need to be available for Dynamics 365 Customer Engagement (on-premises) to work correctly. More information:Active Directory and Active Directory Domain Services Port Requirements
Network ports for the Asynchronous Service, Web Application Server, and Sandbox Processing Service server roles
The following table lists the additional ports that are used for a deployment where the Sandbox Processing Service is running on a separate computer.
| Protocol | Port | Description | Explanation |
|---|---|---|---|
| TCP | 808 | Customer Engagement server role communication | By default, communication over port 808 occurs as follows. - The Asynchronous Service and Web Application Server services communicate to the Sandbox Processing Service through this channel. - The Sandbox Processing Service communicates to the Web Application Server through this channel. The default port is 808, but can be changed in the Windows registry by adding the DWORD registry value TcpPort in the key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSCRM\. |
Network ports for the Organization Web Service server role
The following table lists the additional port that is used by the Organization Web Service server role.
| Protocol | Port | Description | Explanation |
|---|---|---|---|
| TCP | 808 | Used for Fetch-based reports | SQL Server Reporting Services servers that run Fetch-based reports initiated by Dynamics 365 clients communicate with the Organization Web Service server role (a Front End Server role) over this port. |
Network ports that are used by the SQL Server that runs the SQL Server and Microsoft Dynamics 365 Reporting Extensions server roles
The following table lists the ports that are used for a computer that is running SQL Server and has only SQL Server and the Microsoft Dynamics 365 Reporting Extensions (SRS Data Connector) server roles installed.
| Protocol | Port | Description | Explanation |
|---|---|---|---|
| TCP | 135 | MSRPC | RPC endpoint resolution. |
| TCP | 139 | NETBIOS-SSN | NETBIOS session service. |
| TCP | 445 | Microsoft-DS | Active Directory service required for Active Directory access and authentication. This is used by Server Message Block (SMB) during organization creation to create a 'template database' from the installation location on the Dynamics 365 Server to a UNC path on the SQL server. |
| TCP | 1433 | ms-sql-s | SQL Server sockets service. This port is required for access to SQL Server. This number may be different if you have configured your default instance of SQL Server to use a different port number or you are using a named instance. |
| UDP | 123 | NTP | Network Time Protocol. |
| UDP | 137 | NETBIOS-NS | NETBIOS name service. |
| UDP | 138 | NETBIOS-dgm | NETBIOS datagram service. |
| UDP | 445 | Microsoft-DS | Active Directory service required for Active Directory access and authentication. This is used by Server Message Block (SMB) during organization creation to create a 'template database' from the installation location on the Dynamics 365 Server to a UNC path on the SQL server. |
| UDP | 1025 | Blackjack | DCOM, used as an RPC listener. |
Important
In addition to the ports listed previously, UDP port 1434 (SQL Server Browser Service) on the SQL Server is required by Microsoft Dynamics 365 Server Setup to return a list of the computers that are running SQL Server during the installation of Dynamics 365 Server. To work around this, specify the SQLServer\InstanceName during Setup.