Posit package manager failing installs when running in renv-managed projects

[devinrkeane]

Hello!

Since yesterday I'm noticing Posit package manager failing installs when running in renv-managed projects

System: Mac Sequoia 15.5 M4 ARM Chip

I've tried install.packages('remotes') with:

• renv and non renv-managed projects
• In Rstudio and in terminal app running R
• last 2 versions of Rstudio (Sept 2025 and May 2025)
• renv versions 1.0.5, 1.1.4, 1.1.5

The only constant is the posit package manager failing when in renv.

To reproduce, try:

Create a brand new renv-managed project created in Rstudio (new project -> use renv)

# fails
install.packages('remotes', repos = c(CRAN = "https://packagemanager.rstudio.com/all/latest"))

# succeeds
install.packages('remotes', repos = c(CRAN = "cloud.r-project.org"))

In R or Rstudio, no renv:

# succeeds
install.packages('remotes', repos = c(CRAN = "https://packagemanager.rstudio.com/all/latest"))

# succeeds
install.packages('remotes', repos = c(CRAN = "cloud.r-project.org"))

renv diagnostics:

Diagnostics Report [renv 1.1.5]
===============================


# Session Info ---------------------------------------------------------------
R version 4.4.3 (2025-02-28)
Platform: aarch64-apple-darwin20
Running under: macOS Sequoia 15.5

Matrix products: default
BLAS:   /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib 
LAPACK: /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/lib/libRlapack.dylib;  LAPACK version 3.12.0

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

time zone: America/New_York
tzcode source: internal

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

loaded via a namespace (and not attached):
[1] compiler_4.4.3 tools_4.4.3    renv_1.1.5    

# Project --------------------------------------------------------------------
Project path: "~/renv-test"

# Status ---------------------------------------------------------------------
No issues found -- the project is in a consistent state.

# Packages -------------------------------------------------------------------
           Library Source Lockfile Source Path Dependency
KernSmooth 2.23-26   CRAN     <NA>   <NA>  [2]       <NA>
MASS        7.3-64   CRAN     <NA>   <NA>  [2]       <NA>
Matrix       1.7-2   CRAN     <NA>   <NA>  [2]       <NA>
boot        1.3-31   CRAN     <NA>   <NA>  [2]       <NA>
class       7.3-23   CRAN     <NA>   <NA>  [2]       <NA>
cluster      2.1.8   CRAN     <NA>   <NA>  [2]       <NA>
codetools   0.2-20   CRAN     <NA>   <NA>  [2]       <NA>
foreign     0.8-88   CRAN     <NA>   <NA>  [2]       <NA>
lattice     0.22-6   CRAN     <NA>   <NA>  [2]       <NA>
mgcv         1.9-1   CRAN     <NA>   <NA>  [2]       <NA>
nlme       3.1-167   CRAN     <NA>   <NA>  [2]       <NA>
nnet        7.3-20   CRAN     <NA>   <NA>  [2]       <NA>
renv         1.1.5   CRAN    1.1.5   CRAN  [1]     direct
rpart       4.1.24   CRAN     <NA>   <NA>  [2]       <NA>
spatial     7.3-18   CRAN     <NA>   <NA>  [2]       <NA>
survival     3.8-3   CRAN     <NA>   <NA>  [2]       <NA>
utils         <NA>   <NA>     <NA>   <NA>  [2]   indirect

[1]: /Users/me/renv-test/renv/library/macos/R-4.4/aarch64-apple-darwin20                                
[2]: /Users/me/Library/Caches/org.R-project.R/R/renv/sandbox/macos/R-4.4/aarch64-apple-darwin20/f7156815


# ABI ------------------------------------------------------------------------
- No ABI problems were detected in the set of installed packages.

# User Profile ---------------------------------------------------------------
[1] Source  Package Require Version Dev    
<0 rows> (or 0-length row.names)

# Settings -------------------------------------------------------------------
List of 13
 $ bioconductor.version     : NULL
 $ external.libraries       : chr(0) 
 $ ignored.packages         : chr(0) 
 $ package.dependency.fields: chr [1:3] "Imports" "Depends" "LinkingTo"
 $ ppm.enabled              : NULL
 $ ppm.ignored.urls         : chr(0) 
 $ r.version                : NULL
 $ snapshot.type            : chr "implicit"
 $ use.cache                : logi TRUE
 $ vcs.ignore.cellar        : logi TRUE
 $ vcs.ignore.library       : logi TRUE
 $ vcs.ignore.local         : logi TRUE
 $ vcs.manage.ignores       : logi TRUE

# Options --------------------------------------------------------------------
List of 9
 $ defaultPackages                     : chr [1:6] "datasets" "utils" "grDevices" "graphics" ...
 $ download.file.method                : chr "libcurl"
 $ download.file.extra                 : NULL
 $ install.packages.compile.from.source: chr "interactive"
 $ pkgType                             : chr "both"
 $ repos                               : Named chr "https://packagemanager.posit.co/cran/latest"
  ..- attr(*, "names")= chr "CRAN"
 $ renv.consent                        : logi TRUE
 $ renv.project.path                   : chr "/Users/me/renv-test"
 $ renv.verbose                        : logi TRUE

# Environment Variables ------------------------------------------------------
HOME                        = /Users/me
LANG                        = en_US.UTF-8
MAKE                        = make
R_LIBS                      = <NA>
R_LIBS_SITE                 = /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/site-library
R_LIBS_USER                 = /Users/me/renv-test/renv/library/macos/R-4.4/aarch64-apple-darwin20
RENV_DEFAULT_R_ENVIRON      = <NA>
RENV_DEFAULT_R_ENVIRON_USER = <NA>
RENV_DEFAULT_R_LIBS         = <NA>
RENV_DEFAULT_R_LIBS_SITE    = /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/site-library
RENV_DEFAULT_R_LIBS_USER    = /Users/me/Library/R/arm64/4.4/library
RENV_DEFAULT_R_PROFILE      = <NA>
RENV_DEFAULT_R_PROFILE_USER = <NA>
RENV_PROJECT                = /Users/me/renv-test

# PATH -----------------------------------------------------------------------
- /usr/local/bin
- /System/Cryptexes/App/usr/bin
- /usr/bin
- /bin
- /usr/sbin
- /sbin
- /var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin
- /var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin
- /var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin
- /opt/X11/bin
- /usr/local/MacGPG2/bin
- /Library/TeX/texbin
- /opt/homebrew/bin
- /opt/homebrew/sbin
- /Applications/quarto/bin
- /usr/texbin
- /Applications/RStudio.app/Contents/Resources/app/quarto/bin
- /Applications/RStudio.app/Contents/Resources/app/bin/postback

# Cache ----------------------------------------------------------------------
There are a total of 1022 packages installed in the renv cache.
Cache path: "~/Library/Caches/org.R-project.R/R/renv/cache/v5/macos/R-4.4/aarch64-apple-darwin20"

[kevinushey]

Hmm, I'm not able to reproduce -- for example, the following works for me.

renv::install(
   'remotes',
   repos = c(CRAN = "https://packagemanager.rstudio.com/all/latest"),
   rebuild = TRUE
)

Can you try re-running your example with options(renv.download.trace = TRUE) set, and let me know what output you see? For example, I get (also setting RENV_PATHS_ROOT just to avoid any other cached state):

> options(renv.download.trace = TRUE)
> Sys.setenv(RENV_PATHS_ROOT = tempdir())
> renv::install(
+    'remotes',
+    repos = c(CRAN = "https://packagemanager.rstudio.com/all/latest"),
+    rebuild = TRUE
+ )
# Downloading packages -------------------------------------------------------
- Downloading remotes from CRAN ...             
# Downloading 'https://packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/remotes_2.5.0.tgz' [curl] --------

## Request -------------------------------------------------------------------
location
fail
silent
show-error
user-agent = "renv (1.1.5); RStudio Desktop (2025.11.0.88); R (4.4.2 aarch64-apple-darwin20 aarch64 darwin20)"
url = "https://packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/remotes_2.5.0.tgz"
output = "/private/var/folders/5v/jg7ch5gx5jv61wt3cw4xr3yw0000gp/T/RtmpORHVHa/binary/macos/R-4.4/aarch64-apple-darwin20/repository/remotes/renv-tempfile-138ec304714cb"
connect-timeout = "20"
retry = "3"

## Output --------------------------------------------------------------------
[no output generated]

## Status --------------------------------------------------------------------
0

OK [427.5 Kb in 0.36s]
Successfully downloaded 1 package in 4.6 seconds.

The following package(s) will be installed:
- remotes [2.5.0]
These packages will be installed into "~/Library/R/arm64/4.4/library".

Do you want to proceed? [Y/n]: y

# Installing packages --------------------------------------------------------
- Installing remotes ...                        OK [installed binary and cached in 0.14s]
Successfully installed 1 package in 0.21 seconds.

[devinrkeane]

Thanks for the response Kevin!

Trying this in the renv-test project i created, I get nothing different for the RSPM try. It doestn even make it to where there would be tracing. The second URL does manage it below. I dont know if it could be some new firewall my company has introducted since we can get to the RSPM url, and a couple others on my team have reported this on the arm-based laptop.

> getOption("renv.download.trace")
[1] TRUE
> renv::paths$cache()
[1] "/var/folders/n1/3zdnkzr94_jc0c9c4gh9yt100000gn/T//RtmpfVrtwP/cache/v5/macos/R-4.4/aarch64-apple-darwin20"

renv::install(
+              'remotes',
+              repos = c(CRAN = "https://packagemanager.rstudio.com/all/latest"),
+              rebuild = TRUE
+           )
Error: package 'remotes' is not available
Traceback (most recent calls last):
15: renv::install("remotes", repos = c(CRAN = "https://packagemanager.rstudio.com/all/latest"), 
        rebuild = TRUE)
14: renv_retrieve_impl(packages)
13: handler(package, renv_retrieve_impl_one(package))
12: renv_retrieve_impl_one(package)
11: withCallingHandlers(renv_available_packages_latest(package), 
        error = function(err) stopf("package '%s' is not available", 
            package))
10: renv_available_packages_latest(package)
 9: map(errors$data(), warning)
 8: lapply(x, f, ...)
 7: FUN(X[[i]], ...)
 6: withRestarts({
        .Internal(.signalCondition(cond, message, call))
        .Internal(.dfltWarn(message, call))
    }, muffleWarning = function() NULL)
 5: withOneRestart(expr, restarts[[1L]])
 4: doWithOneRestart(return(expr), restart)
 3: <condition-handler>(...)
 2: stopf("package '%s' is not available", package)
 1: stop(sprintf(fmt, ...), call. = call.)

> renv::install(
+              'remotes',
+              repos = c(CRAN = "https://cloud.r-project.org"),
+              rebuild = TRUE
+           )
# Downloading packages -------------------------------------------------------
- Downloading remotes from CRAN ...             
# Downloading 'https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.4/remotes_2.5.0.tgz' [curl] --------

## Request -------------------------------------------------------------------
location
fail
silent
show-error
user-agent = "renv (1.1.5); RStudio Desktop (2025.9.0.387); R (4.4.3 aarch64-apple-darwin20 aarch64 darwin20)"
url = "https://cloud.r-project.org/bin/macosx/big-sur-arm64/contrib/4.4/remotes_2.5.0.tgz"
output = "/private/var/folders/n1/3zdnkzr94_jc0c9c4gh9yt100000gn/T/RtmpfVrtwP/binary/macos/R-4.4/aarch64-apple-darwin20/repository/remotes/renv-tempfile-16fefc181bcb"
connect-timeout = "20"
retry = "3"

## Output --------------------------------------------------------------------
[no output generated]

## Status --------------------------------------------------------------------
0

OK [420.1 Kb in 0.27s]
Successfully downloaded 1 package in 1.8 seconds.

The following package(s) will be installed:
- remotes [2.5.0]
These packages will be installed into "~/renv-test/renv/library/macos/R-4.4/aarch64-apple-darwin20".

Do you want to proceed? [Y/n]: y

# Installing packages --------------------------------------------------------
- Installing remotes ...                        OK [installed binary and cached in 0.16s]
Successfully installed 1 package in 0.18 seconds.

[kevinushey]

The error implies it's failing while attempting to query available packages... do you see a similar error if you "manually" try to download the PACKAGES.rds file, e.g. with:

options(renv.download.trace = TRUE)
url <- "https://packagemanager.rstudio.com/all/latest/src/contrib/PACKAGES.rds"
renv:::download(url, tempfile())

Perhaps also worth testing is something like:

url <- "https://packagemanager.rstudio.com/all/latest/src/contrib/PACKAGES.rds"
download.file(url, tempfile(), method = "curl")
download.file(url, tempfile(), method = "libcurl")

in case the culprit here is the different download methods being used?

[devinrkeane]

This is partially it - I use a ~/.curlrc file to account for our internal artifactory usage, including a token in the file i.e user=user:token, and includes the --fail flag.

For renv:::download(url, tempfile()), Seeing 403s with this. I suppose it's attempting to use these credentials but this is new behavior. Still a mystery as some folks on my team have no curlrc file, no special configuration and are experiencing the same thing. I attached the test project with what I've tried thus far.

Apologies for the long output, Included for completeness.

I honestly cant make heads or tails of what exactly is going on, but I'm pretty sure we can address it by setting 'libcurl' as the standard method, or it seems removing the https:// from the RSPM url. Just seems weird it came out of the blue.

renv-test.zip

> # Scenario 1: with curlrc file present, problem --------------------------------
> # create a .curlrc file with an invalid token to simulate the issue. 
> writeLines("user=me:blahblah\n--fail\n", con = "~/.curlrc")
> # RESTART SESSION FIRST
> options(renv.download.trace = TRUE)
> Sys.setenv(RENV_PATHS_ROOT = tempdir())
> url <- "https://packagemanager.rstudio.com/all/latest/src/contrib/PACKAGES.rds"
> pkg_tempfile <- tempfile()
> # make sure download method to "curl"
> Sys.setenv(RENV_DOWNLOAD_METHOD = "curl")
> options(download.file.method = "curl")
> url <- "https://packagemanager.rstudio.com/all/latest/src/contrib/PACKAGES.rds"
> # fails
> download.file(url, tempfile())
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0    34    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (56) The requested URL returned error: 403
Error in download.file(url, tempfile()) : 
  'curl' call had nonzero exit status

> # fails
> download.file(url, tempfile(), method = "curl")
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0    34    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
curl: (56) The requested URL returned error: 403
Error in download.file(url, tempfile(), method = "curl") : 
  'curl' call had nonzero exit status

> # works
> download.file(url, tempfile(), method = "libcurl")
trying URL 'https://packagemanager.rstudio.com/all/latest/src/contrib/PACKAGES.rds'
downloaded 1.0 MB

> # rspm does not work
> renv::install(
+   'remotes',
+   repos = c(CRAN = "https://packagemanager.rstudio.com/all/latest"),
+   rebuild = TRUE,
+   prompt = F
+ )
renv was unable to query available packages from the following repositories:
- # https://packagemanager.rstudio.com/all/latest/src/contrib ------------------
error downloading 'https://packagemanager.rstudio.com/all/latest/src/contrib/PACKAGES.rds' [error code 56]
error downloading 'https://packagemanager.rstudio.com/all/latest/src/contrib/PACKAGES.gz' [error code 56]
error downloading 'https://packagemanager.rstudio.com/all/latest/src/contrib/PACKAGES' [error code 56]


renv was unable to query available packages from the following repositories:
- # https://packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4 --------
error downloading 'https://packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/PACKAGES.rds' [error code 56]
error downloading 'https://packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/PACKAGES.gz' [error code 56]
error downloading 'https://packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/PACKAGES' [error code 56]


Error: package 'remotes' is not available
Traceback (most recent calls last):
15: renv::install("remotes", repos = c(CRAN = "https://packagemanager.rstudio.com/all/latest"), 
        rebuild = TRUE, prompt = F)
14: renv_retrieve_impl(packages)
13: handler(package, renv_retrieve_impl_one(package))
12: renv_retrieve_impl_one(package)
11: withCallingHandlers(renv_available_packages_latest(package), 
        error = function(err) stopf("package '%s' is not available", 
            package))
10: renv_available_packages_latest(package)
 9: map(errors$data(), warning)
 8: lapply(x, f, ...)
 7: FUN(X[[i]], ...)
 6: withRestarts({
        .Internal(.signalCondition(cond, message, call))
        .Internal(.dfltWarn(message, call))
    }, muffleWarning = function() NULL)
 5: withOneRestart(expr, restarts[[1L]])
 4: doWithOneRestart(return(expr), restart)
 3: <condition-handler>(...)
 2: stopf("package '%s' is not available", package)
 1: stop(sprintf(fmt, ...), call. = call.)

> # DOES work without the https prefix
> renv::install(
+   'remotes',
+   repos = c(CRAN = "packagemanager.rstudio.com/all/latest"),
+   rebuild = TRUE,
+   prompt = F
+ )
# Downloading packages -------------------------------------------------------
- Downloading remotes from CRAN ...             
# Downloading 'packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/remotes_2.5.0.tgz' [curl] --------

## Request -------------------------------------------------------------------
location
fail
silent
show-error
user-agent = "renv (1.1.5); RStudio Desktop (2025.5.1.513); R (4.4.3 aarch64-apple-darwin20 aarch64 darwin20)"
url = "packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/remotes_2.5.0.tgz"
output = "/var/folders/n1/3zdnkzr94_jc0c9c4gh9yt100000gn/T//RtmptX8TuZ/binary/macos/R-4.4/aarch64-apple-darwin20/repository/remotes/remotes_2.5.0.tgz"
connect-timeout = "20"
retry = "3"

## Output --------------------------------------------------------------------
[no output generated]

## Status --------------------------------------------------------------------
0

OK [427.5 Kb in 0.19s]
Successfully downloaded 1 package in 1.4 seconds.

The following package(s) will be installed:
- remotes [2.5.0]
These packages will be installed into "~/renv-test/renv/library/macos/R-4.4/aarch64-apple-darwin20".

# Installing packages --------------------------------------------------------
- Installing remotes ...                        OK [installed binary and cached in 0.11s]
Successfully installed 1 package in 0.14 seconds.
Restarting R session...
The following package(s) are missing entries in the cache:
- remotes
These packages will need to be reinstalled.

- Project '~/renv-test' loaded. [renv 1.1.5]

> options(renv.download.trace = TRUE)
> Sys.setenv(RENV_DOWNLOAD_METHOD = "libcurl")
> options(download.file.method = "libcurl")
> # if this is not set, the first install method below with https prefix will fail, try both with and without
> Sys.setenv(RENV_PATHS_ROOT = tempdir())
> # rspm does not work unless RENV_PATHS_ROOT is set to tempdir() from a fresh session?
> renv::install(
+   package = 'remotes',
+   repos = c(CRAN = "https://packagemanager.rstudio.com/all/latest"),
+   rebuild = TRUE,
+   prompt = F
+ )
List of 6
 $ url     : chr "https://packagemanager.rstudio.com/all/latest/src/contrib/PACKAGES.rds"
 $ destfile: chr "/private/var/folders/n1/3zdnkzr94_jc0c9c4gh9yt100000gn/T/Rtmp9GRYZS/renv-tempfile-185c11ba75fa4"
 $ method  : chr "libcurl"
 $ quiet   : logi TRUE
 $ mode    : chr "wb"
 $ headers : NULL
List of 6
 $ url     : chr "https://packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/PACKAGES.rds"
 $ destfile: chr "/private/var/folders/n1/3zdnkzr94_jc0c9c4gh9yt100000gn/T/Rtmp9GRYZS/renv-tempfile-185c163c6b641"
 $ method  : chr "libcurl"
 $ quiet   : logi TRUE
 $ mode    : chr "wb"
 $ headers : NULL
List of 6
 $ url     : chr "https://rstudio-buildtools.s3.amazonaws.com/renv/package-manager/packages.rds"
 $ destfile: chr "/private/var/folders/n1/3zdnkzr94_jc0c9c4gh9yt100000gn/T/Rtmp9GRYZS/p3m/renv-tempfile-185c172dd1db8"
 $ method  : chr "libcurl"
 $ quiet   : logi TRUE
 $ mode    : chr "wb"
 $ headers : NULL
# Downloading packages -------------------------------------------------------
- Downloading remotes from CRAN ...             
# Downloading 'https://packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/remotes_2.5.0.tgz' [libcurl] --------

List of 6
 $ url     : chr "https://packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/remotes_2.5.0.tgz"
 $ destfile: chr "/private/var/folders/n1/3zdnkzr94_jc0c9c4gh9yt100000gn/T/Rtmp9GRYZS/binary/macos/R-4.4/aarch64-apple-darwin20/r"| __truncated__
 $ method  : chr "libcurl"
 $ quiet   : logi TRUE
 $ mode    : chr "wb"
 $ headers : NULL
OK [427.5 Kb in 0.13s]
Successfully downloaded 1 package in 1.5 seconds.

The following package(s) will be installed:
- remotes [2.5.0]
These packages will be installed into "~/renv-test/renv/library/macos/R-4.4/aarch64-apple-darwin20".

# Installing packages --------------------------------------------------------
- Installing remotes ...                        OK [installed binary and cached in 0.12s]
Successfully installed 1 package in 0.14 seconds.
> # DOES work without the https prefix either way
> renv::install(
+   'remotes',
+   repos = c(CRAN = "packagemanager.rstudio.com/all/latest"),
+   rebuild = TRUE,
+   prompt = F
+ )
List of 6
 $ url     : chr "packagemanager.rstudio.com/all/latest/src/contrib/PACKAGES.rds"
 $ destfile: chr "/private/var/folders/n1/3zdnkzr94_jc0c9c4gh9yt100000gn/T/Rtmp9GRYZS/renv-packages-185c138e43353.rds"
 $ method  : chr "libcurl"
 $ quiet   : logi TRUE
 $ mode    : chr "wb"
 $ headers : NULL
List of 6
 $ url     : chr "packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/PACKAGES.rds"
 $ destfile: chr "/private/var/folders/n1/3zdnkzr94_jc0c9c4gh9yt100000gn/T/Rtmp9GRYZS/renv-packages-185c11a63be02.rds"
 $ method  : chr "libcurl"
 $ quiet   : logi TRUE
 $ mode    : chr "wb"
 $ headers : NULL
# Downloading packages -------------------------------------------------------
- Downloading remotes from CRAN ...             
# Downloading 'packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/remotes_2.5.0.tgz' [libcurl] --------

List of 6
 $ url     : chr "packagemanager.rstudio.com/all/latest/bin/macosx/big-sur-arm64/contrib/4.4/remotes_2.5.0.tgz"
 $ destfile: chr "/var/folders/n1/3zdnkzr94_jc0c9c4gh9yt100000gn/T//Rtmp9GRYZS/binary/macos/R-4.4/aarch64-apple-darwin20/reposito"| __truncated__
 $ method  : chr "libcurl"
 $ quiet   : logi TRUE
 $ mode    : chr "wb"
 $ headers : NULL
OK [427.5 Kb in 0.18s]
Successfully downloaded 1 package in 1.2 seconds.

The following package(s) will be installed:
- remotes [2.5.0]
These packages will be installed into "~/renv-test/renv/library/macos/R-4.4/aarch64-apple-darwin20".

# Installing packages --------------------------------------------------------
- Installing remotes ...                        OK [installed binary and cached in 0.11s]
Successfully installed 1 package in 0.14 seconds.

[devinrkeane]

My colleagues who were experiencing this changed nothing (none who had a .curlrc file) but reverted to the previous version of Rstudio (2025.05.1-513.dmg) and the issues dissapeared

I'll try to file a ticket in Rstudio github issues when I have some time

[kevinushey]

This sounds related to rstudio/rstudio#16446 -- there's an issue where RStudio's download hook might use an empty authorization header, and that is causing issues with downloads in some cases.

[devinrkeane]

roger, I will watch that issue for now, thanks for your help!