4.0 | Vsto

The "Dinosaur" That Still Roars: Why VSTO 4.0 Still Matters in 2026

We can't talk about VSTO without addressing the ticking clock. Microsoft is pushing users toward the . This is a web-based client, which means the COM-based VSTO 4.0 runtime simply won't work there. Should you still use VSTO? vsto 4.0

Microsoft has not officially "killed" VSTO, but the innovation has stopped. VSTO 4.0 remains in maintenance mode. It is supported, but it is a dead end. The "Dinosaur" That Still Roars: Why VSTO 4