Tom Clancy’s Rainbow Six Siege is an online tactical shooter video game developed by Ubisoft Montreal and published by Ubisoft in 2015. The game puts heavy emphasis on environmental destruction and cooperation between players. Each player assumes control of an attacker or a defender in different gameplay modes, such as rescuing a hostage, defusing a bomb, and taking control of an objective within a room. So, a new update arrived named Y9S4.3 a while ago. Check out the Rainbow Six Siege Y9S4.3 update patch notes down below.
Rainbow Six Siege Y9S4.3 Patch Notes

Here you can find the fixes for the Y9S4.3 patch.
Improved boot time by reducing unnecessary reboots (PC Only)
- Removed unnecessary reboots of RainbowSix.exe due to BattlEye relaunches
- This streamlines the boot flow for users and reduces the time to get into the game by roughly 50%
Quickmatch & Standard Map Pool Update
Hereford [REDACTED] due to [REDACTED]. Stay tuned for [REDACTED].
BUG FIXES
USER EXPERIENCE
FIXED – Squad Menu matchmaking settings are not saved after rebooting the game.