countless issues
many issues with 3rd party software and hardware. to name a couple that I've hit, SQL operations studio can no longer connect with TLS/SSL (to be fixed on 24th IIRC) and pluggable USB laptop port expanders cannot have a 2nd displayport screen - the 2nd screen is now just a mirror of the laptop screen (no known update time)
however, you cannot just 'not upgrade' due to the security fixes etc in the upgrade. want to be vulnerable just to run some software/hardware - you're going to have to make a decision based on risk there.
Biting the hand that feeds IT
