Hi. We have same problem on 10 DCs. Uninstall/reboot/install, not solved.
During attempts to resolve problem i noticed strange think:
dcinterface.exe during start installs stunnel.exe as service with automatic start.
(command in services after installation is stunnel.exe -service -install -quiet - this means install as service - again. oh. (http://www.stunnel.org/static/stunnel.html)). but then, launches stunnel as process, without calling installed service. oh. why ?
this means, that every stop/start of service dcinterface launches another instance of stunnel. plus, automatic start of installed service stunnel during launch of OS. please explain my why. is it normal behavior or is something going wrong with my environment ?
because of error 10053 means connection related problems i think multiple instances of stunnel on same host can be related with it. but when i on one of 10 DCs start single instantion of stunnel with debug=7 log file is without any network problems. But SWG still send alert from all of 10 DCs, without difference.