Extract the archive somewhere (eg: in a folder on your desktop)
Turn off your antivirus (some antiviruses might cause some issues)
Run AerisServerSwitcher.exeas administrator
Click on Switch to Aeris
If there are some dialogs about intalling the HTTPs certificate, always click on Ok/Yes. The HTTPs certificate will be installed automatically, if it wont, just see these instructions
Make sure that the switcher says You are connected to Aeris
Open osu! and login with your Aeris account
How to play on official osu! again
Make sure osu! is closed
Open the switcher and click Switch to osu!
Make sure the switcher says You are connected to osu!
Open osu! and login with your osu! account NOTE: If you want to connect to osu!’s website and you see Aeris’s website or an error, even if the switcher claims you’re connected to osu!, empty your browser cache and restart your browser.