I have used XLConnect and XLConnectJar successfully for at least 5 years.
Have just updated R to Ver 4.0.4 and XLConnect to 1.0.2 and get the following message when attaching:
XLConnect: It seems downloading the JAR dependencies may have failed. If you
would like to use a different maven repository, please set the environment
variable XLCONNECT_JAVA_REPO_URL to a valid URL, e.g.
Sys.setenv(XLCONNECT_JAVA_REPO_URL='https://jcenter.bintray.com'), and reinstall
the package.
After following the suggested solution and re-installing I still get the message.
The package seems to work corrcetly.
Has anyone experienced the same problem and do you have a solution.
Many thanks