If you mean the windows firewall then if it was blocking SupportTool.exe it would have failed to connect to begin with, not finished uploading and then decided to fail. Antivirus doesn't have anything to do with a connection being reset either, besides it was off at the time
If the next update doesn't fix my issue I'll email support, otherwise I don't think it's worth bothering them if I'm the only one having this problem.
