IOException: Connection to refused

Document ID : KB000019751
Last Modified Date : 14/02/2018
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Using CA CSM to acquire or download a product fails with:

IOException: Connection to refused


This might be an indication that you have one of the following conditions:

  • A firewall that is blocking the connection

If it is a firewall blocking the connection your sites network administrator needs to add site:

to the firewall to allow the connection.

If your site uses proxies, review your proxy credentials on the

User Settings, Software Acquisition page

For example:

Figure 1

Testing your connection
Ensure you specify the correct address and port then click the Test Connection button to test.
Note: If a proxy is not used, CA CSM uses HTTPS Port Number 443 to communicate with CA Support Online website .