diff --git a/app/igneum-app/src/prover.rs b/app/igneum-app/src/prover.rs
index d8526864..0f66f72a 100644
--- a/app/igneum-app/src/prover.rs
+++ b/app/igneum-app/src/prover.rs
@@ -157,7 +157,9 @@ fn find_tools(bin_dir: &Path) -> Result<Tools, String> {
         // from Ubuntu as /mnt/<drive>/.../wsl2/bin), else one built there by setup-wsl.sh
         let shipped = wsl_path(&bin_dir.join("wsl2").join("bin").join("igneum-prove-host"));
         let script = format!("for f in '{shipped}' ~/igneum-prove/target/release/igneum-prove-host /opt/igneum/igneum-prove-host; do [ -x \"$f\" ] && {{ echo \"$f\"; break; }}; done; command -v nvidia-smi >/dev/null && echo cuda");
-        let probe = Command::new(crate::platform::tool("wsl")).args(["-d", "Ubuntu-24.04", "--", "bash", "-lc", &script]).output();
+        let mut probe_cmd = Command::new(crate::platform::tool("wsl"));
+        probe_cmd.args(["-d", "Ubuntu-24.04", "--", "bash", "-lc", &script]);
+        let probe = crate::platform::quiet(&mut probe_cmd).output(); // hidden: this probe opened a console window on PC 2 every minute (5 October 2026)
         let text = probe.map(|o| String::from_utf8_lossy(&o.stdout).to_string()).unwrap_or_default();
         let host = text.lines().find(|l| l.contains("igneum-prove-host")).map(|l| PathBuf::from(l.trim()));
         let setup = bin_dir.join("wsl2").join("setup-wsl.sh");