This use to work. Had not used it for a while. Got a new wireless router installed (no blocked ports). Now it dont not connect to the WinXP machine. It does however connect to another Win7 machine on the same network without any issues. Any ideas on how to remedy this issue?
This means that the issue is caused by Avast mistakenly blocking Remote Utilities. In order to resolve the issue, please try adding the following installation folder to the Avast exception list and see if you're able to connect this way with the antivirus software running as usual: C:\Program Files (x86)\Remote Utilities - Host\ Here's a guide from Avast themselves on how you can easily add exceptions.
In addition, please consider submitting a false positive report to Avast, so that they could remove their false detection. You can submit a false positive report here.