RStudio gives "Incorrect function" when setting git as Version control - r

Question

When I create a new project and select to create a new Git repository, or when I try to change the version control system in project options I receive a RStudio error stating "Incorrect function" with a big X and no extra information.
The below link has a similar issue, but their solution of changing the path for git.exe has not helped (i have tried all three paths)
https://support.rstudio.com/hc/en-us/community/posts/200632528-Git-Error-Incorrect-Function
Some extra notes:
RStudio allows me to clone repository to set new working directory
Also git works in bash, so i feel this is an RStudio issue.

Answer 1

I encountered the same error. For me it also had to do with using a network path not a local directory for the project location (as for lewis1211).
Workaround: Map the network drive. E.g. Map your //server/share to some drive, say Z: (using map network drive, if you are using windows). If you set your project up under Z: then, it works.

Answer 2

If you have already chosen "git.exe" in RStudio --> Tools --> Global Options --> Git/SVN, then try to open Rstudio shell and type git init. In my case it showed "Permission denied", and after running as administrator the problem has gone.

Answer 3

This is only a partial answer if it fixes your problem: I reproduced this when trying to use a network path for a project location. When using a local directory no error occurs. Could indeed be an RStudio issue.

Answer 4

Run you R studio as Project administration.
This solves my issue.

Answer 5

SOLVED.
I had the same problem. The Git-RStudio-Connection fails but git is working perfectly in the CMD. When running the git init command in CMD it works and creates a .git folder. But running the git init command in the RStudio terminal fails with a message Warning: unable to access 'C:/Users/%username%/.gitconfig': Permission denied ... fatal: unknown error occured while reading the configuration files.
The Version Control Sytem (VCS) or git-Panel does not appear in RStudio and selecting it in the projects options leads to the same message Error: Unzulässige Function (eng. Error: Incorrect function).
A closer look into the .gitconfig file should give you a new solution approach hopefully without having administration rights. Comparing the installation on the integration worksation with a productive workstation shows, that on the Test-Machine an incomplete .gitconfig file is on C:/Users/%username%/.gitconfig and on the Productive-Machine a complete gitconfig file is on Z:/.gitconfig. By the way, Z is a mapped drive which is linking to the company's user-profile settings (see CMD > echo %HOMEDRIVE%).
According to this analysis there should be multiple possible solution approaches:
(1) delete the corrupt .gitconfig and hope the the system is correctly looking into your profiles directory
(2) complete the .gitconfig file that all necessary information are there. The message fatal: unknown error occured while reading the configuration files could actually be a hint, that the first message access... permission denied is false and the problem lies in the incomplete file.
(3) Be aware that there can be a confusion between ".gitconfig" as FILE and ".gitconfig" as FOLDER. Check this with changing directory with cd to folder and cat to show the file content. It will tell you that you cannot display a folder as file-content.
(4) Change the location of the config file with git config --file FullnameToGitconfig. e.g. git config --file %USERPROFILE%/.gitconfig or git config --file %USERPROFILE%/.gitconfig/gitconfig or git config --file %HOMEDRIVE%/.gitconfig etc.
[user]
name = DOE John
email = john.doe#acme.com
[merge]
tool = kdiff3
[mergetool "kdiff3"]
path = C:/Program Files/KDiff3/kdiff3.exe
[diff]
guitool = kdiff3
[difftool "kdiff3"]
path = C:/Program Files/KDiff3/kdiff3.exe
[core]
editor = \"C:/Program Files (x86)/GitExtensions/GitExtensions.exe\" fileeditor