The Fate Grand Order error code 43 issue usually occurs when you try to launch the game. This problem is usually occurs when the USB debugging switch setting of the phone is turned on.

Method 1: Restart the Valorant Application to fix error code 43 Restarting the game will re-establish its connection to the server and usually fix this problem.

UCM-UCSI ACPI, Windows has stopped this device because it has reported problems (Code 43). What is UCM-UCSI ACPI Device Driver?

Graphics Device Driver Error Codes 22, 32, 37, or 43 can cause issues when you're trying to game, edit a video, or watch a movie. Here are the fixes!

For this tip to work, that window should say “Windows has stopped this device because it has reported problems. (Code 43)”. Now it’s time to get to work.

Update: It already pushed one hotfix for the Valorant beta's at-launch server issues earlier in the day, but now Riot is now exploring a new fix for what it describes as "Riot-wide server/login ...