A recent security update of Adobe AIR now requires that all communication be done over TLS security. Previously TLS, SSL 2.0, and SSL 3.0 were supported but, due to recent security concerns regarding SSL 2.0 and SSL 3.0, they are no longer supported in Adobe Air. Unfortunately, some windows computers have TLS turned off by default and they are experiencing issues when they try and sync StudioCloud.
Instructions on how to resolve this issue are available in
the following support article
note, so far this change only seems to affect some users with the Windows