could not load libraries on Rstudio but R

I have just updated my R (4.0.3) and R studio (1.4.1103) on my uni windows machine. After installing the packages I could not load them on R studio but can on R. I do not understand this. Any ideas why?

this is an example error on Rstudio:

Error: package or namespace load failed for ‘tidyverse’:
.onLoad failed in loadNamespace() for 'rlang', details:
call: NULL
error: The rlang package is not properly installed.
The DLL version does not correspond to the package version.
Please update rlang to the latest version.
Updating packages on Windows requires precautions:

on R console:

-- Attaching packages --------------------------------------- tidyverse 1.3.0 --
v ggplot2 3.3.3 v purrr 0.3.4
v tidyr 1.1.2 v stringr 1.4.0
v readr 1.4.0 v forcats 0.5.1
-- Conflicts ------------------------------------------ tidyverse_conflicts() --
x dplyr::filter() masks stats::filter()
x dplyr::lag() masks stats::lag()

From what I can gather, it is most likely that your RStudio is pointing to a different installment of R. Can you run R.Version() on both RStudio and R console and see if they are the same?

If you have different versions, just point your RStudio to the version from your console in Tools > Global Option > General > R version

Thanks, vlad_aluas!

I just checked they're showing the same version.

Hi batbr,

Then I would try re-installing the rlang package

It says could not remove the existing rlang:

> install.packages("rlang")
trying URL ''
Content type 'application/zip' length 1193441 bytes (1.1 MB)
downloaded 1.1 MB

package ‘rlang’ successfully unpacked and MD5 sums checked
Warning in install.packages :
  cannot remove prior installation of package ‘rlang’
Warning in install.packages :
  problem copying C:\R\R-4.0.3\library\00LOCK\rlang\libs\x64\rlang.dll to C:\R\R-4.0.3\library\rlang\libs\x64\rlang.dll: Permission denied
Warning in install.packages :
  restored ‘rlang’

The downloaded binary packages are in

However, i do not think it is rlang, because if i try other packages it will show error with other package. Another example:

Error: package or namespace load failed for ‘sf’:
.onLoad failed in loadNamespace() for 'Rcpp', details:
call: new_dummyObject(.dummyInstancePointer)
error: object 'class__dummyInstance' not found

But, it loads on R console. very strange!

perhaps you have same version number but different R installations no less...
What does it show you in Tools / General Options / R ?

The installations look identical. I tried changing the version but it does not help.

any other ideas to test out?

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