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Before you click any download buttons, it is crucial to understand what you are installing. Many users try to download "R Studio" thinking it is a standalone software package. It is not.

To download RStudio for Windows 10 (64-bit), you need to install two separate pieces of software: the (the engine) and RStudio Desktop (the interface) .

If R Studio picked the 32-bit version, go to: Tools > Global Options > R Version Select the 64-bit version from the dropdown (e.g., R-4.x.x (64-bit) ). Click "OK" and restart R Studio.