There are currently no plans to bring Halo 5: Guardians to PC, according to developer 343 Industries. During a stream to celebrate the fifth anniversary of Halo 5 (via Gamespot), Halo Community Manager John Junyszek confirmed that there are currently no plans to bring Guardians to PC. Junyszek also reiterated that there are no plans to add Halo 5 to the Halo Master Chief collection on PC or Xbox, something developer 343 Industries has said on several occasions before.
But could you keep playing Forge?
While Halo 5: Guardians is not currently available on PC, the community manager noted that Halo 5 is now available on PC, in the form of Halo 5: Forge. Halo 5: Forge is a free port of Halo 5: Guardians. However, Forge only supports Forge and custom games, not campaigns or multiplayer matchmaking. So that's not really the full Halo 5 experience you get with Halo 5: Guardians. While this is bad news for Halo 5 PC fans, at least the next Halo Infinite will be playable on PC, though we don't yet know exactly when that will be outside of the 2021 release window. Best Halo 5 deals: Today's Guardians Halo 5: Guardians (Xbox One)