I'm trying to install forge for 1.19.2, but I keep getting an error when opening it:

Something went wrong while installing <br/>Check log for more details :<br/>java.lang.RuntimeException: javax.imageio.IIOException: Can't create cache file

This is the log mentioned:

JVM info: Oracle Corporation - 1.8.0_341 - 25.341-b10
java.net.preferIPv4Stack=true
Found java version 1.8.0_341

Please post installer log.

JVM info: Oracle Corporation - 1.8.0_341 - 25.341-b10
java.net.preferIPv4Stack=true
Found java version 1.8.0_341

This is the log that appears when it fails, is this the thing you say?

Edited August 22, 20223 yr by SimpDelPatoJuan

The installer log is a file which is generated near to the installer.

java.net.preferIPv4Stack=true
Exception in thread "main" java.lang.RuntimeException: javax.imageio.IIOException: Can't create cache file!
    at com.google.common.base.Throwables.propagate(Throwables.java:160)
    at net.minecraftforge.installer.InstallerPanel.getImage(InstallerPanel.java:136)
    at net.minecraftforge.installer.InstallerPanel.<init>(InstallerPanel.java:146)
    at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:185)
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:72)
Caused by: javax.imageio.IIOException: Can't create cache file!
    at javax.imageio.ImageIO.createImageInputStream(Unknown Source)
    at javax.imageio.ImageIO.read(Unknown Source)
    at net.minecraftforge.installer.InstallerPanel.getImage(InstallerPanel.java:131)
    ... 3 more
Caused by: java.nio.file.AccessDeniedException: D:\Program Files (x86)\imageio1109621026117497757.tmp
    at sun.nio.fs.WindowsException.translateToIOException(Unknown Source)
    at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
    at sun.nio.fs.WindowsException.rethrowAsIOException(Unknown Source)
    at sun.nio.fs.WindowsFileSystemProvider.newByteChannel(Unknown Source)
    at java.nio.file.Files.newByteChannel(Unknown Source)
    at java.nio.file.Files.createFile(Unknown Source)
    at java.nio.file.TempFileHelper.create(Unknown Source)
    at java.nio.file.TempFileHelper.createTempFile(Unknown Source)
    at java.nio.file.Files.createTempFile(Unknown Source)
    at javax.imageio.stream.FileCacheImageInputStream.<init>(Unknown Source)
    at com.sun.imageio.spi.InputStreamImageInputStreamSpi.createInputStreamInstance(Unknown Source)
    ... 6 more

Looks like there is something wrong with your temporary folder configuration in your user's windows environment variables?

It is trying to use "D:\Program Files (x86)" as your temporary directory, which is wrong.

It obviously fails because you don't have the rights to create files there.

Then how could i fix it

So when I open the installer it creates a temporary file but because i don't have permisson it doesn't create and thats why i can't open it?

 

Edited August 22, 20223 yr by SimpDelPatoJuan

at java.nio.file.Files.createTempFile(Unknown Source)
    at javax.imageio.stream.FileCacheImageInputStream.<init>(Unknown Source)
    at com.sun.imageio.spi.InputStreamImageInputStreamSpi.createInputStreamInstance(Unknown Source)

The temporary file it is trying to create is one used by java, not something created directly by the installer.

From the name it looks to be something to do with "image caching".

 

This link has some instructions on how to change your temporary folder:

https://www.howtogeek.com/285710/how-to-move-windows-temporary-folders-to-another-drive/

But that is quite old, you might be able to find more up-to-date instructions somewhere else?

 

You can always contact Microsoft support. It is very possible that the error is actually caused by some other problem with windows.

Quote

JVM info: Oracle Corporation - 1.8.0_341 - 25.341-b10

You could also ask Oracle since that is the java you are using. But they would likely say it is a windows problem?

Okay ty very much

Also what folder should i change it to?

The default value is %USERPROFILE%\AppData\Local\Temp

But you are really asking the wrong people. This is the forge support forums, we are not experts on MS Windows, even if sometimes think we are. 🙂 

Edited August 22, 20223 yr by warjort

I finally changed it to C:/Windows/temp and now I can open forge, thank you very much for all your help