Once I have tried to uninstall R related sides, I realised that it is not straightforward unlike other programming engines. For that reason, I have posted the procedure on the stackoverflow website under the related questions. See the link: https://stackoverflow.com/questions/55204017/how-to-uninstall-r-and-rstudio-with-all-packages-settings-and-everything-else/61187094#61187094
I have further issues with the answers on the forums/internet. For that reason, I have extended the solution with further steps (which I experienced currently) as below:
Delete everything in folders that was shown after running .libPaths() in R. In my case, it looks like:
1 “C:/Users/%USERNAME%/Documents/R/win-library/3.6” “C:/Program Files/R/R-3.6.3/library”
Therefore, I have manually deleted following files and folders (they remain there after full uninstallation of R, RStudio and RTools) as well:
- C:\Users\%USERNAME%\Documents\R\ - C:\Users\%USERNAME%\Documents\.Rhistory - Various files and folders under C:\Users\%USERNAME%\AppData\Local\Temp related with R and RStudio sessions.