# Cannot connect to the ServiceDesk Plus/AssetExplorer server

## Problem

You cannot connect to the ServiceDesk Plus/Asset Explorer server. The server-connectivity status, on the ServiceDesk Plus Settings page on the Web console of Endpoint Central is **"Not Reachable"**.

## Cause

You cannot connect to the ServiceDesk Plus/Asset Explorer server because of one or more of the following reasons:

### Server related issues:

- Incorrect details about the server
- Lack of connectivity to the server because it has been shut down

### Network and Firewall related issues:

- Lack of network connectivity between the Endpoint Central server and the ServiceDesk Plus/Asset Explorer server
- A wrong product selected while using the HTTPS communication protocol
- Required ports blocked by the firewall

## Resolution

Identify the reason why you cannot connect to the ServiceDesk Plus/Asset Explorer server and follow the relevant resolution below:

### Checking the details of the ServiceDesk Plus/Asset Explorer server

Ensure that the following server details are specified correctly:

- Name or IP address of the server
- Communication port numbers
- Communication protocol

Endpoint Central uses this information to connect to the ServiceDesk Plus/Asset Explorer server. If any of the above details are changed, update them in the **ServiceDesk Plus server settings** section in the Endpoint Central Web console.

### Starting the ServiceDesk Plus/Asset Explorer server

Start the ServiceDesk Plus/Asset Explorer server service by following these steps:

1. Click **Start**
2. Go to **Programs > ManageEngine ServiceDesk Plus / ManageEngine Asset Explorer**
3. Click **ServiceDesk Plus / Asset Explorer Server**

After starting the server service, refresh the ServiceDesk Plus Settings page in the Endpoint Central Web console.

### Fixing network connectivity issues

To resolve network connectivity issues:

- Ensure there are no network connectivity problems between the Endpoint Central server and the ServiceDesk Plus/Asset Explorer server.
- Verify that you can ping the SDP-installed server from the machine where Endpoint Central is installed.

### Configuring Firewall Rules

Configure firewall rules on both servers to open the correct inbound and outbound ports for seamless communication:

- Configure firewall rules on the machine where Endpoint Central is installed.
- Configure firewall rules on the machine where ServiceDesk Plus (SDP) is installed.

If **Telnet to the SDP port** from the Endpoint Central machine fails, it may be due to incorrect inbound or outbound port configuration. Open the SDP port and ensure the correct inbound and outbound ports are specified to enable proper communication.

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**Applies to:** Asset Integration, Software Deployment Integration, ServiceDesk Plus Integration, AssetExplorer Integration

**Keywords:** Asset Integration, ServiceDesk Plus Integration, HelpDesk, ServiceDesk Plus, ManageEngine, Software Deployment, Deploy Software, Software Distribution