# Start TeXstudio portable in multiple instances

I use TeXstudio portable and want to use it in multiple instances when double clicking a .tex or .txss file. The necessary starting parameter is described here, but I do not know how to use it. Do you have an idea? Thanks!

• Are you using linux? Open the prompt command window and type texstudio file --start-always where file is the name of you file to open. – Sigur Jul 11 '13 at 20:05
• Sorry for that missing information. I am using Windows 7. – Dirk Jul 13 '13 at 13:33
• I have now filed github.com/texstudio-org/texstudio/issues/354 "GUI configuration for --start-always" for this. – Robert Pollak Oct 18 '18 at 7:20

I assume this is Windows. There, you have to change the file association for .txss and .tex files so that this --start-always parameter is used, like
"c:\path\to\texstudio.exe" --start-always "%1"

• Thanks! I use the answer from kyrisu and create a .bat file to change the extension association. – Dirk Jul 13 '13 at 13:34
• @RobertPollak This is quite a long time ago. Currently, I don't use the portable version any more as well as the bat file. Sorry. – Dirk Nov 6 '18 at 14:29