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

[canis_arcticus]

I am trying to install.packages("dplyr")

I have disabled Windows Firewall.

I have disconnected from WiFi and connected to a mobile hotspot instead.

I have updated R and RStudio to the newest versions. I also downloaded the newest version of RTools. And I restarted after every install.

I have changed the mirror (but it still tries to look in cran.mtu.edu which I can't even get to online)

I have downloaded the package in tar.gz format and tried to install it locally.

Nothing is working.

I used to be able to install packages just fine.

Anyone have any ideas. I am a novice at R and this is my first time posting in here so if I'm doing it wrong, I apologize!

install.packages("dplyr")
Warning in install.packages :
unable to access index for repository http://cran.mtu.edu/src/contrib:
cannot open URL 'http://cran.mtu.edu/src/contrib/PACKAGES'
Installing package into ‘C:/Users/Andi/Documents/R/win-library/4.0’
(as ‘lib’ is unspecified)

[andresrcs]

This seems like a connectivity issue, R is not being able to connect to the CRAN repository you have selected, these are some things to try.

• Choose a different CRAN repository, RStudios repository is a good choice (http://cran.rstudio.com/) or you could choose one that is geographically closer to you.
  
  
• Disable secure download setting.
  
  
• Check if your internet connection has traffic restrictions of some kind, like a firewall, proxy server, etc. This is usually the case when you are at work or school.