RJava Install Error "Java_Home Cannot Be Determined from the Registry"
I Am Trying to Load the rJava Using the Command: Library(Rjava) but I Get the Following Error: Error: .Onload Failed in loadNamespace() for 'Rjava', Details...
I am trying to load the rJava using the command:
library(rJava)
But I get the following error:
Error : .onLoad failed in loadNamespace() for 'rJava', details:
call: fun(libname, pkgname)
error: JAVA_HOME cannot be determined from the Registry
Error: package or namespace load failed for ‘rJava’
I tried reinstalling both the Java and the R program with the latest versions but still get these errors.. May I know how I can resolve this? Thank you very much!
This error is often resolved by installing a Java version (i.e. 64-bit Java or 32-bit Java) that fits to the type of R version that you are using (i.e. 64-bit R or 32-bit R). This problem can easily effect Windows 7 users, since they might have installed a version of Java that is different than the version of R they are using.
Install 64 bit Java from .
Then in windows cmd run
setx PATH "C:\Program Files\Java\jre1.8.0_211\bin\server;%PATH%"
(make sure your path is correct).
Then in RStudio run
Sys.setenv(JAVA_HOME="")
Now, you should be able to run rJava!!
I got the same error resolved by installing same version of R and Java i.e. 64 bits and manually updating the path i.e. ,
Sys.setenv(JAVA_HOME='C:/Program Files/Java/jre1.8.0_121') # for 64-bit version
Under Windows 10, first check your (running) R-Version:
R.version
If you see something like x86_64, a 64-bit version of Java is needed.
Simply downloading and installing the matching Java version () solved the problem for me. No reinstall of R needed (as suggested by other users here). There also was no need to set the path explicitly.
R for Windows installer installs by default both 32-bit and 64-bit files. Reinstalling R and unticking 32-bit part solved the problem for me.
As mentioned in the r-statistics link cited above, you have to manually download the 64-bit version of Java. If not, then the 32-bit version will be installed.
So, if you have a 64-bit operating system, then ensure that both R and Java are using the 64-bit installs. Otherwise, this problem will persist.
This has been killing me and I have tried multiple methods above, it doesn't work. After, I mix all solution to try and below process works for me.
- Install Java for 64 bit
- Run below code in windows command
setx PATH "C:\Program Files\Java\jre1.8.0_171\bin\server;%PATH%"
(please change the address acorrding to your dvm.dll real address) - Run below in R studio
Sys.setenv(JAVA_HOME="")
Then I finally can run
library(rJava)
library(xlsx)
I faced the same issue and was feeling very down as I couldnt get my analysis done. This worked for me :
check your operating system. 64 bit or 32 bit.
uninstall previous versions of Java.
delete rJAVA library from Doc>R>win-library. If you have more than 1 versions of R, make sure you delete rJAVA package from all of them.
install Java based on system requirement (64 bit or 32 bit).
and finally restart R before and after installing rJava package.
You can add INSTALL_opts=c("--no-multiarch") to your install_github() call:
devtools::install_github("mne-tools/mne-r", INSTALL_opts=c("--no-multiarch"))
For more info:
If R is 64-bit version make sure to install Java 64-bit version!
If R is x86-bit version make sure to install Java x86-bit version!
Create a new directory in C: drive as "library"
set your libPath this directory. you need to type
.libPath("C:/library")
reinstall packages which requires java (xlsx, rJava, RJDemetra)
it will give error message again but it will work.
Robert Thorne covers electric vehicle innovations, autonomous driving systems, global mobility trends, and automotive engineering developments.
