I am having a problem with Google Cloud Printing, it always throw an error when I submit a print job using C#:
The remote server returned an error: (426) Requires HTTPS..
I even try it on http://www.google.com/cloudprint/simulate.html but the same problem.
Any way to workaround this or am I missing something?
Just use HTTPS instead of HTTP. Some GCP API has transferred to HTTPS.