Photoshop 27.4 Exit Hang: CoreSync.exe Deadlock on Lenovo P1 (RTX 4060)
Issue: Photoshop 27.4 (March 2026) "Exit Hang" specifically involving CoreSync.exe.
System: Lenovo P1 Laptop, NVIDIA RTX 4060 Laptop GPU (v595.79 Studio), Windows 11.
Technical Details: Upon closing Photoshop, CoreSync.exe maintains a persistent file handle/lock on the %temp% Photoshop Temp file (approx. 1.5GB). This prevents Photoshop.exe from terminating and triggers a "zombie" state for the Adobe Crash Processor.
Observed Behavior: The system enters a "One Use per Reboot" state. Subsequent launches of Photoshop fail in silence, or "Already Running" or "Taking longer than usual" errors unless a manual taskkill is performed on CoreSync.exe and all related Adobe services. This occurs even after a clean GPU driver install and PS preference reset. Unclear without looking in logs when this started.
