pythonnet
diff --git a/‎src/runtime/StateSerialization/RuntimeData.cs‎
Lines changed: 3 additions & 1 deletion b/‎src/runtime/StateSerialization/RuntimeData.cs‎
Lines changed: 3 additions & 1 deletion
@@ -20,7 +20,9 @@ public static class RuntimeData
         {
             try
             {
-                return new BinaryFormatter();
+                var res = new BinaryFormatter();
+                res.Serialize(new MemoryStream(), 1); // test if BinaryFormatter is usable
+                return res;
             }
             catch
             {
Original file line number	Diff line number	Diff line change
`@@ -20,7 +20,9 @@ public static class RuntimeData`
`20`	`20`	`{`
`21`	`21`	`try`
`22`	`22`	`{`
`23`		`- return new BinaryFormatter();`
	`23`	`+ var res = new BinaryFormatter();`
	`24`	`+ res.Serialize(new MemoryStream(), 1); // test if BinaryFormatter is usable`
	`25`	`+ return res;`
`24`	`26`	`}`
`25`	`27`	`catch`
`26`	`28`	`{`