If not, do the following for steam: In your Steam Library, right click The Witcher 3. This should be automatically turned on for Steam and GOG. My crossbow wont use up any bolts (not just the basic which is infinite, but all types of crossbow bolts).

Help with command addbolts (All crossbow Bolts infinite?) - posted in The Witcher 3 Mod Troubleshooting: To anyone who can assist me, since I cant seem to figure this out: I used the addbolts command using addbolts(100), which apparently assigns a infinite value to ammo consumption. As such, the crossbow is (and, as far as I can tell, has always been) about mostly 2 things, 3 now with Blood and Wine: 1. It's not meant to be something that kills, rather something that distracts enemies and breaks their attacks. The crossbow was always meant as a distractor for enemies, much like most fireguns in Bloodborne for example. You will obviously need the Maximilian Brody's House item to complete the quest, but you can also pick up the Viper Venomous Steel sword diagram, and Ofier's Crossbow, plus plenty of currency.

The Witcher 3 Open Sesame Gear And Rewards Aside from the viper diagrams and auction items, you are also able to grab a bunch of rewards from the vault.

Witcher 3 crossbow not working