You may also use the console launcher if you are having issues with the above launcher.
Don't want a launcher or bot management panel? Download the RSPeer client jar directly. Please note: This jar does not automatically update, you must re-downloaded to get new updates. For automatic updates, use the launcher.Download and Install Scripts, Purchase Tokens / Instances, Write ScriptsView Bot Management Panel Instructionsgetting started guide.
Jar not running? Please make sure you have java installed, https://adoptopenjdk.net/.
Jar opening in WinRar or Internet explorer? Download and run https://johann.loefflmann.net/en/software/jarfix/ to fix jar file associations.