I have tried to install RTools, and RStudio stop working when it's installed... It freezes at launching : the loading never ends... I have the good version of RTools : I tried RTools 3.5 for R 3.6.3 and RTools 4 for R 4.03. RStudio stop working when RTools is installed, regardless of the version. And when I uninstall RTools from Windows, RStudio works again...
Now I'm on R 3.6.3, RStudio 1.4.1103 and Windows 10.
An idea what happens ?