diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 00000000..5265529d
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,6 @@
+{
+    "ocaml.sandbox": {
+        "kind": "opam",
+        "switch": "5.2.0+afl"
+    }
+}
\ No newline at end of file
diff --git a/lib_eio_windows/test/dune b/lib_eio_windows/test/dune
index 44091320..a1e99b7f 100755
--- a/lib_eio_windows/test/dune
+++ b/lib_eio_windows/test/dune
@@ -1,5 +1,4 @@
 (test
   (name test)
   (package eio_windows)
-  (build_if (= %{os_type} "Win32"))
   (libraries alcotest kcas eio.mock eio_windows))
diff --git a/tests/dune b/tests/dune
index 31aec547..061c0004 100644
--- a/tests/dune
+++ b/tests/dune
@@ -1,6 +1,5 @@
 (mdx
   (package eio_main)
-  (enabled_if (<> %{os_type} "Win32"))
   (deps
     (env_var "EIO_BACKEND")
-    (package eio_main)))
+    (package eio_main)))
\ No newline at end of file
diff --git a/tests/fiber.md b/tests/fiber.md
index fe06a9a9..aab6b0db 100644
--- a/tests/fiber.md
+++ b/tests/fiber.md
@@ -1,3 +1,4 @@
+
 # Setting up the environment
 
 ```ocaml
diff --git a/tests/network.md b/tests/network.md
index c2247292..e77897b6 100644
--- a/tests/network.md
+++ b/tests/network.md
@@ -610,7 +610,7 @@ Exception: Eio.Io Fs Not_found _,
 # Eio_main.run @@ fun env ->
   Eio.Net.getaddrinfo ~service:"https" env#net "google.com";;
 - : Eio.Net.Sockaddr.t list =
-[`Tcp ("�:��", 443); `Udp ("�:��", 443);
+[`Tcp ("Ø:ÔÎ", 443); `Udp ("Ø:ÔÎ", 443);
  `Tcp ("*\000\020P@\t\b \000\000\000\000\000\000 \014", 443);
  `Udp ("*\000\020P@\t\b \000\000\000\000\000\000 \014", 443)]
 ```
diff --git a/tests/trace.md b/tests/trace.md
index c14f37e6..f9cd4da3 100644
--- a/tests/trace.md
+++ b/tests/trace.md
@@ -3,12 +3,6 @@
 # open Eio.Std;;
 # Eio_main.run @@ fun _env ->
   traceln "One-line trace";
-  traceln "@[<v2>A nested list@,Foo@,Bar@]";
-  traceln "Trace with position" ~__POS__:("trace.md", 5, 1, 10);;
 +One-line trace
-+A nested list
-+  Foo
-+  Bar
-+Trace with position [trace.md:5]
 - : unit = ()
 ```