diff --git a/codex-rs/app-server/tests/suite/auth.rs b/codex-rs/app-server/tests/suite/auth.rs
index 1e60871012..1c51335e38 100644
--- a/codex-rs/app-server/tests/suite/auth.rs
+++ b/codex-rs/app-server/tests/suite/auth.rs
@@ -503,6 +503,7 @@ async fn get_auth_status_returns_token_after_proactive_refresh_recovery() -> Res
 }
 
 #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+#[cfg_attr(windows, ignore = "temporary CI isolation for #19606 Windows hang")]
 async fn login_api_key_rejected_when_forced_chatgpt() -> Result<()> {
     let codex_home = TempDir::new()?;
     create_config_toml_forced_login(codex_home.path(), "chatgpt")?;
diff --git a/codex-rs/app-server/tests/suite/conversation_summary.rs b/codex-rs/app-server/tests/suite/conversation_summary.rs
index bb938d9ae7..5925d3c7c8 100644
--- a/codex-rs/app-server/tests/suite/conversation_summary.rs
+++ b/codex-rs/app-server/tests/suite/conversation_summary.rs
@@ -92,6 +92,7 @@ async fn get_conversation_summary_by_thread_id_reads_rollout() -> Result<()> {
 }
 
 #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+#[cfg_attr(windows, ignore = "temporary CI isolation for #19606 Windows hang")]
 async fn get_conversation_summary_by_rollout_path_rejects_remote_thread_store() -> Result<()> {
     let codex_home = TempDir::new()?;
     std::fs::write(
diff --git a/codex-rs/app-server/tests/suite/v2/app_list.rs b/codex-rs/app-server/tests/suite/v2/app_list.rs
index 335489929d..d51be9f88b 100644
--- a/codex-rs/app-server/tests/suite/v2/app_list.rs
+++ b/codex-rs/app-server/tests/suite/v2/app_list.rs
@@ -317,6 +317,7 @@ connectors = false
 }
 
 #[tokio::test]
+#[cfg_attr(windows, ignore = "temporary CI isolation for #19606 Windows hang")]
 async fn list_apps_reports_is_enabled_from_config() -> Result<()> {
     let connectors = vec![AppInfo {
         id: "beta".to_string(),
@@ -1269,6 +1270,7 @@ async fn list_apps_force_refetch_patches_updates_from_cached_snapshots() -> Resu
 }
 
 #[tokio::test]
+#[cfg_attr(windows, ignore = "temporary CI isolation for #19606 Windows hang")]
 async fn experimental_feature_enablement_set_refreshes_apps_list_when_apps_turn_on() -> Result<()> {
     let initial_connectors = vec![AppInfo {
         id: "alpha".to_string(),
diff --git a/codex-rs/app-server/tests/suite/v2/compaction.rs b/codex-rs/app-server/tests/suite/v2/compaction.rs
index 44b5dd6dc6..d10624b7b0 100644
--- a/codex-rs/app-server/tests/suite/v2/compaction.rs
+++ b/codex-rs/app-server/tests/suite/v2/compaction.rs
@@ -252,6 +252,7 @@ async fn thread_compact_start_triggers_compaction_and_returns_empty_response() -
 }
 
 #[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+#[cfg_attr(windows, ignore = "temporary CI isolation for #19606 Windows hang")]
 async fn thread_compact_start_rejects_invalid_thread_id() -> Result<()> {
     skip_if_no_network!(Ok(()));