SSL Error Message when posting to Wordpress with RWordpress
The RWordpress package has not been touched for over 7 years. You might want to explore other options.
These days, people use the curl or httr package for internet access. The RCurl package has been unmaintained for years unfortunately, and it only supports very old version of SSL (apparenlty not TSL 1.1 and TLS 1.2)
As you are using Windows 10 you can eventually download IIS Crypto and easily manage and disable TLS and SSL.
But @Jeron is right, RWordpress is deprecated.
Anyone know a solution with current REST API? Im close but missing the last pieces to get it working, see: Upload Media in Wordpress Library via R