> On Aug 12, 2016, at 3:53 AM, Dayalan, Nithya <nithya.daya...@merck.com> wrote:
> 
> Hi Team,
> 
> We are receiving the below message while updating the package. Please help.
> 
>> install.packages("parallel", lib="D:/Program Files/R/R-3.2.5/library")
> Warning: unable to access index for repository 
> https://cran.fhcrc.org/src/contrib:
>  cannot open URL 'https://cran.fhcrc.org/src/contrib/PACKAGES'
> Warning: unable to access index for repository 
> http://www.stats.ox.ac.uk/pub/RWin/src/contrib:
>  cannot open URL 'http://www.stats.ox.ac.uk/pub/RWin/src/contrib/PACKAGES'
> Warning: unable to access index for repository 
> https://cran.fhcrc.org/bin/windows/contrib/3.2:
>  cannot open URL 'https://cran.fhcrc.org/bin/windows/contrib/3.2/PACKAGES'
> Warning: unable to access index for repository 
> http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/3.2:
>  cannot open URL 
> 'http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/3.2/PACKAGES'
> Warning messages:
> 1: package 'parallel' is not available (for R version 3.2.5)
> 2: package 'parallel' is a base package, and should not be updated


In most case it is the first warning or error that is most meaningful, but in 
this case it is the last one.

The `installed.packages` function can tell you which packages are in the Bases" 
category:

plic <- installed.packages( .Library, priority = "base")

> rownames(plic)
 [1] "base"      "compiler"  "datasets"  "graphics"  "grDevices" "grid"      
"methods"  
 [8] "parallel"  "splines"   "stats"     "stats4"    "tcltk"     "tools"     
"utils"    


Updating them requires updating your R version, which is what you should do now.

-- 
David.



>> 
> 
> 
> Thanks & Regards,
> Nithya Dayalan
> AMS MRL DPS | HCL @ Merck
> E-mail: nithya.daya...@merck.com<mailto:nithya.daya...@merck.com>
> Tel#+91 44 61053951| Mobile +91 8754232975
> 
> Notice:  This e-mail message, together with any attachme...{{dropped:14}}
> 
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David Winsemius
Alameda, CA, USA

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