R Error in install.packages : permission denied
I solved it with this answer. It's R is installed as if it needs constant admin privileges. That answer shows the correct way of doing it without running into the problem again.
Install packages does not work: Permission denied
Can you do .libPaths() ?
Maybe the .libPaths() doesnt map the correct location (if you are not the administrator)
Try .libPaths(.libPaths()[2]) then try install.packages("psych") again.
Can't install.packages, error: Permission denied
Have you tried the changing the sys.sleep from 0.5 to 3 solution? Sometimes the virus scanner needs more time before the downloaded package zip files are checked and given free.
Warning in install.packages: unable to move temporary installation
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