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download.file() on ftp URL fails in windows with default download method

Dan Tenenbaum 
Hi,
trying URL 'ftp://ftp.ncbi.nlm.nih.gov/genomes/ASSEMBLY_REPORTS/All/GCF_000001405.13.assembly.txt'
Error in download.file(url, tempfile()) :
  cannot open URL 'ftp://ftp.ncbi.nlm.nih.gov/genomes/ASSEMBLY_REPORTS/All/GCF_000001405.13.assembly.txt'
In addition: Warning message:
In download.file(url, tempfile()) : InternetOpenUrl failed: ''

If I set method="curl" it works fine. This was on R-3.2.2-beta (sessionInfo() below) but I got the same results in R-3.2.1 and R-devel. 

This does not happen on Windows Server 2008 but it happens on Windows Server 2012.

Dan
R version 3.2.2 beta (2015-08-05 r68859)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows Server 2012 x64 (build 9200)

locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

Thread (8 messages)

Dan Tenenbaum download.file() on ftp URL fails in windows with default download method Aug 7 Henrik Bengtsson download.file() on ftp URL fails in windows with default download method Aug 8 Uwe Ligges download.file() on ftp URL fails in windows with default download method Aug 8 Dan Tenenbaum download.file() on ftp URL fails in windows with default download method Aug 8 Dan Tenenbaum download.file() on ftp URL fails in windows with default download method Aug 11 David Smith download.file() on ftp URL fails in windows with default download method Aug 12 Dan Tenenbaum download.file() on ftp URL fails in windows with default download method Aug 12 Martin Morgan download.file() on ftp URL fails in windows with default download method Aug 16