Where is installer of galaxy 2.0? I downloaded the file first then it started downloading automatic and i want to free space so i need to know where it is anyone knows?

Wherever your browser put it. Probably in the Downloads folder.

I checked everywhere but i cannot find it because installer himself is somewhere on my C drive
I am looking for the installer that starts when you open GOG galaxy it automatically downloads it is like 250 mb or so

Ohh. You want the GoG2.0 actual installer that is downloaded by the little exe that you get from their website. Well that is more complicated. It may be unavailable because they do it the way they do. Or it's in your 'Temp' folders in your 'Users' > 'Username' folder, between downloading it (using the little exe from the website) and clicking Install after it's downloaded. Maybe it can then be copied from the 'Temp' folder, within this window of time.

It may not be grabbable because of something they have done to protect it. It may be to stop others changing the program and passing it off as GoG's program. Who knows.

There is an available older version exe somewhere on this Forum though. Or a link to one.

If it's just to delete it, it's probably already gone. Files in your 'Temp' folders are deleted every so often automatically. Using the 'Disk Cleanup' utility regularly will net you some space too.

Thanks man i found it was in Users but it was hidden lol anyway yes they sure want to protect it hard to know i did not have many installers like this

You're welcome, dude.