Solved: Error in file(file, “rt”) : cannot open the connection (2021)

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We’ll give you tips on How to solve Error in file(file, “rt”) : cannot open the connection.

How to Solve: Error in file(file, “rt”) : cannot open the connection

Understanding what the error is about

Error in file (file, “rt”): Cannot open the connection is a file error at the basic level. It is an error message that is divided into two portions. One part of the message, “error in file (file, “rt”) points out that a low-level function has failed to open a certain file at a specific location. “Cannot open the connection,” on the other hand, points out the inability of R to find a file to open at a specified location when opening a data file. This error message basically points out a problem in a file system that leads to a bad file reference. That is what triggers the error, and the problem has everything to do with how you reference your working directory.

Error in file(file,

Solving the Error

When this error pops up, the specific reason may not be the same as that of another person experiencing the same error. But the basic thing that R is telling you is that it is unable to locate the file.

  • The reason for this may be due to a problem with the way you are referencing your working directory. You need to make where you want the working directory for the procedure to be clear. You can do this using the setwd function.

It may be an issue of having an old default setting in your local environment. What you can do is to first set the working directory appropriately and then specify the name of the file in your code directly.

  • Another solution is to ensure that any file in the parent directory, you use “../” for them. This will solve any problem that has to do with relative file references to directories that are above and below the working directory.
  • The last solution is to use Windows to inspect your file handles. This will fix all your file suffix problems.


With any of the solutions highlighted above, you can easily solve the error message, Error in file(file, “rt”) : cannot open the connection. Try them out and tell us how it goes.

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