diff --git a/packages/server/src/server/agent/providers/provider-availability.test.ts b/packages/server/src/server/agent/providers/provider-availability.test.ts
index baf0cf7f9b..419b5f1cf6 100644
--- a/packages/server/src/server/agent/providers/provider-availability.test.ts
+++ b/packages/server/src/server/agent/providers/provider-availability.test.ts
@@ -48,7 +48,8 @@ afterEach(() => {
   process.env.PATH = originalEnv.PATH;
   process.env.PATHEXT = originalEnv.PATHEXT;
   for (const dir of tempDirs.splice(0)) {
-    rmSync(dir, { recursive: true, force: true });
+    // Windows can briefly retain a lock on the copied executable after its probe exits.
+    rmSync(dir, { recursive: true, force: true, maxRetries: 5, retryDelay: 100 });
   }
 });