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After updating from R R3.0.2 to R 3.3.1 it is not possible to connect to cran for package install over a proxy using Rgui.exe anymore. Same problem with RStudio.

HTTP status was '407 Proxy Authentication Required

I set the system environment variables http_proxy and https_proxy and controlled settings via Sys.getenv("http_proxy"). I also checked firewall settings. Has there anything changed between R3.0.2 and R3.3.1 which complicates the use of a proxy?

Michael Schmitz
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1 Answers1

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My parallel installed R3.0.2 version correctly uses the proxy as defined in the http_proxy system variable whereas R3.3.1 doesn't. Finally I have found a workaround to update my packages also in R3.3.1 using libcurl in combination with the system environment variables http_proxy and https_proxy.

update.packages(ask='graphics',method="libcurl",checkBuilt=TRUE)
Michael Schmitz
  • 55
  • 8