Hello! I have few bot scripts that are written on C# and work on Linux (Ubuntu 16.04) via Mono. The system is up to date.
Starting by july 9 it is not possible to make API requests to Wikipedia since all of them are resulted with message
"Your Browser's Connection Security is Outdated. Wikipedia is making the site more secure. You are using an old web browser that will not be able to connect to Wikipedia in the future. Please update your device or contact your IT administrator. etc..." with link to page https://wikitech.wikimedia.org/wiki/HTTPS/Browser_Recommendations .
The same binary code works fine on Windows.