In extreme cases (such as deleting windows folder), it might break your computer. Messing up the procedure might make your game unplayable and require reinstallation to fix. It addresses the problem of Steam Workshop file duplication, but isn't in any sense official nor endorced way of dealing with the problem. This guide was written for players of Onion Gamers (OG) Arma 3 server for BMR Insurgency game mode.
Workaround for Steam Workshop file duplication in Arma 3 by Boberro Workaround for Steam Workshop file duplication in Arma 3 View on GitHub Download.