This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

I installed java with plugins and still can't open documents with .jar. Do I have to direct it to C:\Acer\ProgramFiles\ and how do I change?

  • 1 reply
  • 1 has this problem
  • 4 views
  • Last reply by cor-el

mjnsl
mjnsl
more options

I have been trying to open a .jar file on a new Acer laptop. I installed the JAVA, however, when I try to open the .jar files it only brings me back to install Java. The computer is an Acer and the program files are located at C:\Acer\ProgramFiles instead of C:\program files. Do I need to change the web browser somehow to read at C:\Acer\ProgramFiles\?

I have been trying to open a .jar file on a new Acer laptop. I installed the JAVA, however, when I try to open the .jar files it only brings me back to install Java. The computer is an Acer and the program files are located at C:\Acer\ProgramFiles instead of C:\program files. Do I need to change the web browser somehow to read at C:\Acer\ProgramFiles\?

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

What kind of .jar file do you try to open and why?

The .jar files that Firefox uses for a theme are not Java files, but are ZIP archives that store the theme files.
You can use "File > Open File" or drag the .jar file in the "Tools > Add-ons > Appearance/Themes" window to install the theme.