Hello!
I'm not exactly familiar with computers so I suspect this may be a problem with an easy fix.
I want to install Forge, preferably version 1.16.1, along with Optifine 1.16.1 (this is the version a preferred server currently runs on). I've experimented with trying to download earlier versions as well, however I meet the same problem regardless. I have Java version 8 update 261 (build 1.8.0_261-b12). Each time I attempt to open the .JAR file for the launcher, I'm greeted with this message:
I'm not entirely sure what I'm doing wrong here, or even what I'm doing in the first place. Could somebody help me?
Edit: I realized I forgot to add what system I'm using. I'm running on Windows 10 with a 64-bit operating system and x64-based processor. I am also using the x64-bit Java application.