Help please, I have been trying to download the package dplyr into my r studio but is unable to do so - maybe due to proxy, please help

error:
Warning in install.packages :
unable to access index for repository http://cran.rstudio.com/src/contrib:
cannot open URL 'http://cran.rstudio.com/src/contrib/PACKAGES'

If your connection is behind a proxy server you need to set your credentials on startup. Take a look at this support article

1 Like

I wrote this:
Sys.setenv(http_proxy= "http://proxy.example.com:165.225.110.8:80/")
but still cannot work

The environment variable has to be set on startup so I think you need to use a .Renviron file as explained in the support article I linked for you.

Also, it seems you are not setting your actual credentials and proxy address.