Tried with the timeout, tried in windows 10 fresh install, tried windows 7. I've tried with windows curl.exe, ive tried curl from debian, macosx all latest versions.
I have three NUC units sitting on my desk one of them is from a sealed box, never been used.. a fresh installation of the signageplayer.exe all i have done is disabled the firewall... i get the same problem
I've tried updating the content, saving it through the studio, then restarting signageplayer.exe it doesnt work..
When updating the content through the studio, and issuing a save and system reboot.. curl then sends the request ok.