I'm done with this
I am MCSA in Server 2003 and 2012 R2, but never again.
MS exams start at a reasonable standard early on, then as more people pass they make the exams steadily harder. One trick is to introduce more complex question formats, with potentially hundreds on wrong possible answers - one small mistake with a PowerShell drop-down parameter and you get zero.
I had five attempts at the final 2012 R2 exam. Loads of studying over a year and my scores were getting lower.
First attempt with no study: 670. One year's study and experience later, expecting I'd smash it: 430
It's like narrowly missing a GCSE, then resitting it a year later and finding A-level questions on the paper, but you still only get a GCSE.
I've wasted too much of my life of this.