Security Compliance

No connection could be made in Patch Manager because the target machine actively refused it

This article addresses an issue that prevents Patch Manager from communicating with the WSUS server.

First published date

11/29/2018 10:35 PM

Last published date

11/29/2018 10:35 PM

Overview

When you add a WSUS server to Patch Manager, the following error displays:

Could not connect to server:

Exception occurred at 

No connection could be made because the target machine actively refused it 

Product section

Patch Manager

Cause

The WSUS server is not responding on the appropriate port. As a result, Patch Manager cannot connect to the WSUS server.

Resolution

Verify that:

  1. The WSUS server is installed and configured properly. 
  2. The WSUS listening port  is correct. 
  3. Patch Manager is able to resolve the WSUS server and the port included in the Connection Wizard is correct. 
  4. The WSUS server has no errors in the Windows Event and Application logs and is functioning correctly.