Error Starting R The R session failed to start. RSTUDIO VERSION RStudio 2024.12.1+563 "Kousa Dogwood " (27771613, 2025-02-02) for windows

Was RStudio working on this compute prior to updating to 2024.12.1, or is this the first time you are trying RStudio on this computer?

The error message "An attempt was made to access a socket in a way forbidden by its access permissions" suggests a possible clash with some other software or perhaps your system's security software (firewall, etc.).

Have you tried rebooting Windows? Just in case something is hanging in the background and holding on to this resource. Unlikely but worth a try.

Another example of what looks like a similar problem: Error starting R Studio on Windows.