Problems reading files with Windows path containing special characters

[jansunde]

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Brief description of the problem
I have always read Excel files into RStudio using read_excel(). My data files are stored inside a company OneDrive account and the path includes the name of the company. The issue only appeared recently.

This is the error message I get:

Error in file.exists(path) :
file name conversion problem -- name too long?

I think the issue is that the company name contains an unusual character, the Norwegian character ("ø"). If I move the Excel file to another location, e.g. "C:/Users/jansun/test folder" it loads without any problem.
As soon as I add the "ø" character in the folder name, it returns the same error message.
The same applies to the other specifically Norwegian characters "æ" and "å".
I think the issue is related to R or Windows' handling of unusual characters, unfortunately I don't have a Mac or Linux install to test this hypothesis.

library(readxl)
colour <- read_excel(path = "C:/Users/jansun/OneDrive - Møreforsking AS/R/SAFERIMTA/data/Colour analysis SAFERIMTA.xlsx", 
                                        sheet = "til R")

Error message:
Error in file.exists(path) :
file name conversion problem -- name too long?