---
title: "Installing on an Alternate Port"
slug: "installing-on-an-alternate-port"
tags: ["Ports", "Installation", "Installer Hosting Options"]
updated: 2025-06-30T16:21:28Z
published: 2025-06-30T16:21:28Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.decisions.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Installing on an Alternate Port

## Overview

By default, Decisions uses port 80; however, other programs may already occupy this port.

Instead, Decisions can run on an alternate port. This change can be made during or after installation by editing the respective settings:

- **PortalBaseURL** properties in the Specify Portal Base URL installer window
- **HttpPort**and **PortalBaseUrl** properties in the Settings.xml

The following example demonstrates both methods in a self-hosted instance and an IIS instance.

Open the new port number in Windows Firewall before changing the portOtherwise, the installer may produce an error relating to the port refusing the connection. Refer to the [Opening Ports in Windows Firewall](https://docs.microsoft.com/en-us/sql/reporting-services/report-server/configure-a-firewall-for-report-server-access?view=sql-server-ver15#:~:text=Local%20Administration%20(SSRS).-,Opening%20Ports%20in%20Windows%20Firewall,-To%20open%20port) article in Microsoft's documentation and change their example "80" with the desired port.

---

## Self-Hosted

### Changing Port During Installation

Upon reaching the **Specify Portal Base URL** window during installation, users may change the **Port**field to declare a different port for Decisions.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2025-06-30_10h59_34.png)

---

## Changing Port After Installation

1. After the installation, run the Decisions installer as an Administrator again and click **Edit Settings.**  
  
These settings can also be found in the settings.xml file located in **C: > Program Files > Decisions > Decisions Server.**  
![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2025-06-30_11h02_17.png)
2. Edit the **HttpPort**property****with a different number.

![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2025-06-30_11h03_10.png)
3. Edit the **PortalBaseURL**property****to match the updated port number. Click **Save**.

![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2025-06-30_11h04_00.png)
4. Finally, restart Decisions to update this new port configuration.

![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2025-06-30_11h04_30.png)
5. Navigate to the newly configured BasePortalURL.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1619536450779.png)

---

## IIS Hosted

### Setting Port After Installation

1. Navigate to the Decisions file location, by default **C: > Program Files > Decisions,**and open the **Settings.XML** file to edit it.
2. Locate the property called **ControlInstanceEndpoints** and set the current values for each **Port**definition to your desired port e.g. "8080".  
  
Do not change the **Port** to 443 since this is the HTTPS default port.  
![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1650546771017.png)
3. Locate the property called **PortalBaseURL**and edit it to include the desired port number.  
![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2022-04-21_10h02_32.png)
4. For the property **LocallyAddressableIISOrDNSName**, ensure that it does not include the port.
5. Save and close the XML. The port binding must be set in IIS. To do this, open IIS and set the port binding for the website you are using (by default **Default Web Site**).
6. Then, **Save**and **close**IIS.

![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2022-04-21_10h02_41.png)

---

For further information on Installation, visit the [Decisions Forum](https://community.decisions.com/categories/InstallationSetup).