Galaxywrp.dll -

It helps the game communicate with GOG's servers for features like tracking play time and achievements. www.reddit.com Why is it important? Required for Launch:

This is usually a wrapper library file. In many older games, this was used to transition multiplayer services from GameSpy to other platforms (like GOG Galaxy) or to emulate LAN capabilities. Galaxywrp.dll

If your antivirus deleted the file, restore it and add an exclusion. It helps the game communicate with GOG's servers