diff --git a/scripts/build_test.sh b/scripts/build_test.sh
index 2251cc64f6ba..1b9302b693cc 100755
--- a/scripts/build_test.sh
+++ b/scripts/build_test.sh
@@ -7,6 +7,15 @@ AVALANCHE_PATH=$( cd "$( dirname "${BASH_SOURCE[0]}" )"; cd .. && pwd )
 # Load the constants
 source "$AVALANCHE_PATH"/scripts/constants.sh
 
-# Ensure execution of fixture unit tests under tests/ but exclude ginkgo tests in tests/e2e and tests/upgrade
-# shellcheck disable=SC2046
-go test -shuffle=on -race -timeout="${TIMEOUT:-120s}" -coverprofile="coverage.out" -covermode="atomic" $(go list ./... | grep -v /mocks | grep -v proto | grep -v tests/e2e | grep -v tests/upgrade)
+EXCLUDED_TARGETS="| grep -v /mocks | grep -v proto | grep -v tests/e2e | grep -v tests/upgrade"
+
+GOOS=$(go env GOOS)
+if [[ "$GOOS" == "windows" ]]; then
+  # tmpnet is not compatible with windows
+  EXCLUDED_TARGETS="${EXCLUDED_TARGETS} | grep -v tests/fixture"
+fi
+
+TEST_TARGETS="$(eval "go list ./... ${EXCLUDED_TARGETS}")"
+
+# shellcheck disable=SC2086
+go test -shuffle=on -race -timeout="${TIMEOUT:-120s}" -coverprofile="coverage.out" -covermode="atomic" ${TEST_TARGETS}
diff --git a/tests/fixture/tmpnet/defaults.go b/tests/fixture/tmpnet/defaults.go
index aac7a1fee912..958dd414a420 100644
--- a/tests/fixture/tmpnet/defaults.go
+++ b/tests/fixture/tmpnet/defaults.go
@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"github.com/ava-labs/avalanchego/config"
+	"github.com/ava-labs/avalanchego/utils/logging"
 	"github.com/ava-labs/avalanchego/vms/platformvm/txs/executor"
 )
 
@@ -46,8 +47,8 @@ func DefaultFlags() FlagsMap {
 		config.HealthCheckFreqKey:               "2s",
 		config.AdminAPIEnabledKey:               true,
 		config.IndexEnabledKey:                  true,
-		config.LogDisplayLevelKey:               "INFO",
-		config.LogLevelKey:                      "DEBUG",
+		config.LogDisplayLevelKey:               logging.Off.String(), // Display logging not needed since nodes run headless
+		config.LogLevelKey:                      logging.Debug.String(),
 		config.MinStakeDurationKey:              DefaultMinStakeDuration.String(),
 	}
 }
diff --git a/tests/fixture/tmpnet/node_process.go b/tests/fixture/tmpnet/node_process.go
index dc5c5bfebf16..4ce0997eb60f 100644
--- a/tests/fixture/tmpnet/node_process.go
+++ b/tests/fixture/tmpnet/node_process.go
@@ -112,7 +112,14 @@ func (p *NodeProcess) Start(w io.Writer) error {
 		return fmt.Errorf("failed to remove stale process context file: %w", err)
 	}
 
+	// All arguments are provided in the flags file
 	cmd := exec.Command(p.node.RuntimeConfig.AvalancheGoPath, "--config-file", p.node.getFlagsPath()) // #nosec G204
+
+	// Ensure process is detached from the parent process so that an error in the parent will not affect the child
+	cmd.SysProcAttr = &syscall.SysProcAttr{
+		Setsid: true,
+	}
+
 	if err := cmd.Start(); err != nil {
 		return err
 	}
@@ -129,15 +136,6 @@ func (p *NodeProcess) Start(w io.Writer) error {
 		nodeDescription = fmt.Sprintf("%s with path: %s", nodeDescription, dataDir)
 	}
 
-	go func() {
-		if err := cmd.Wait(); err != nil {
-			if err.Error() != "signal: killed" {
-				_, _ = fmt.Fprintf(w, "%s finished with error: %v\n", nodeDescription, err)
-			}
-		}
-		_, _ = fmt.Fprintf(w, "%s exited\n", nodeDescription)
-	}()
-
 	// A node writes a process context file on start. If the file is not
 	// found in a reasonable amount of time, the node is unlikely to have
 	// started successfully.