I have an application that updates a SmartSheet using the available APIs.. The application uses the C# NuGet packages for Visual Studio (2017)
The program has been working flawlessly for over 12months now but as of 1am last night (UK time), I no longer am able to connect getting the very basic error of "There was an issue connecting"
After grabbing the code for the library from GitHub I managed to ascertain that actual error was "The request was aborted: Could not create SSL/TLS secure channel."
Further googling suggested that this could be a TLS issue and now added TLS1.2 connectivity.
Did anything happen with TLS protocols last night?