$MSFT has not been performing as well as the other Mega Caps and is lagging behind $AAPL, normally these two are heavily correlated
A retest of the 200 Day MA is possible here, which is also in between the 0.38 - 0.5 Fibs at $405 - $410.
A retest and hold on this level and I believe that $MSFT can move back up to its 50 Day MA which is at $434 next then.
Losing the 200 Day MA, will not be a good sign here, as it signals that the bullish trend has flipped bearish again
Wave A remains in place and losing the 200 Day MA would still put this in Wave A for me.