Thanks for your help. Unfortunately, it still does not work after changing it to different locations. However, I can reach the cran link you posted.
install.packages("tidyverse")
Warning in install.packages :
kann nicht auf den Index für das Repository https://ftp.fau.de/cran/src/contrib zugreifen:
cannot open URL 'https://ftp.fau.de/cran/src/contrib/PACKAGES'
WARNING: Rtools is required to build R packages but is not currently installed. Please download and install the appropriate version of Rtools before proceeding:
https://cran.rstudio.com/bin/windows/Rtools/
Warning in install.packages :
kann nicht auf den Index für das Repository https://ftp.fau.de/cran/src/contrib zugreifen:
cannot open URL 'https://ftp.fau.de/cran/src/contrib/PACKAGES'
Warning in install.packages :
package ‘tidyverse’ is not available for this version of R
A version of this package for your version of R might be available elsewhere,
see the ideas at
https://cran.r-project.org/doc/manuals/r-patched/R-admin.html#Installing-packages
Warning in install.packages :
kann nicht auf den Index für das Repository https://ftp.fau.de/cran/bin/windows/contrib/4.3 zugreifen:
cannot open URL 'https://ftp.fau.de/cran/bin/windows/contrib/4.3/PACKAGES'
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