diff --git a/internal/collector/process/process.go b/internal/collector/process/process.go
index 1e1dc9b0..d99ecd15 100644
--- a/internal/collector/process/process.go
+++ b/internal/collector/process/process.go
@@ -180,20 +180,6 @@ func (c *Collector) Build(logger *slog.Logger, miSession *mi.Session) error {
 
 	var err error
 
-	if c.config.EnableWorkerProcess {
-		if miSession == nil {
-			return errors.New("miSession is nil")
-		}
-
-		miQuery, err := mi.NewQuery("SELECT AppPoolName, ProcessId FROM WorkerProcess")
-		if err != nil {
-			return fmt.Errorf("failed to create WMI query: %w", err)
-		}
-
-		c.workerProcessMIQueryQuery = miQuery
-		c.miSession = miSession
-	}
-
 	switch c.config.CounterVersion {
 	case 2:
 		c.perfDataCollector, err = pdh.NewCollector[perfDataCounterValues](pdh.CounterTypeRaw, "Process V2", pdh.InstancesAll)
@@ -333,6 +319,28 @@ func (c *Collector) Build(logger *slog.Logger, miSession *mi.Session) error {
 		nil,
 	)
 
+	if c.config.EnableWorkerProcess {
+		if miSession == nil {
+			return errors.New("miSession is nil")
+		}
+
+		miQuery, err := mi.NewQuery("SELECT AppPoolName, ProcessId FROM WorkerProcess")
+		if err != nil {
+			return fmt.Errorf("failed to create WMI query: %w", err)
+		}
+
+		c.workerProcessMIQueryQuery = miQuery
+		c.miSession = miSession
+
+		var workerProcesses []WorkerProcess
+
+		if err = c.miSession.Query(&workerProcesses, mi.NamespaceRootWebAdministration, c.workerProcessMIQueryQuery); err != nil {
+			c.config.EnableWorkerProcess = false
+
+			return fmt.Errorf("WMI query for collector.process.iis failed: %w", err)
+		}
+	}
+
 	return nil
 }
 
diff --git a/internal/collector/process/process_worker.go b/internal/collector/process/process_worker.go
index 5356de93..9c499a40 100644
--- a/internal/collector/process/process_worker.go
+++ b/internal/collector/process/process_worker.go
@@ -45,10 +45,12 @@ func (c *Collector) collect(ch chan<- prometheus.Metric) error {
 		return fmt.Errorf("failed to collect metrics: %w", err)
 	}
 
+	err = nil
+
 	var workerProcesses []WorkerProcess
 	if c.config.EnableWorkerProcess {
-		if err := c.miSession.Query(&workerProcesses, mi.NamespaceRootWebAdministration, c.workerProcessMIQueryQuery); err != nil {
-			return fmt.Errorf("WMI query failed: %w", err)
+		if err = c.miSession.Query(&workerProcesses, mi.NamespaceRootWebAdministration, c.workerProcessMIQueryQuery); err != nil {
+			err = fmt.Errorf("WMI query for collector.process.iis failed: %w", err)
 		}
 	}
 
@@ -88,7 +90,7 @@ func (c *Collector) collect(ch chan<- prometheus.Metric) error {
 
 	wg.Wait()
 
-	return nil
+	return err
 }
 
 func (c *Collector) collectWorker() {
diff --git a/pkg/collector/collect.go b/pkg/collector/collect.go
index 47dde3cd..c695cf91 100644
--- a/pkg/collector/collect.go
+++ b/pkg/collector/collect.go
@@ -27,7 +27,6 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/prometheus-community/windows_exporter/internal/mi"
 	"github.com/prometheus-community/windows_exporter/internal/pdh"
 	"github.com/prometheus-community/windows_exporter/internal/types"
 	"github.com/prometheus/client_golang/prometheus"
@@ -215,7 +214,7 @@ func (c *Collection) collectCollector(ch chan<- prometheus.Metric, logger *slog.
 
 	if err != nil {
 		if !errors.Is(err, pdh.ErrNoData) && !errors.Is(err, types.ErrNoData) && !errors.Is(err, windows.EPT_S_NOT_REGISTERED) {
-			if errors.Is(err, pdh.ErrPerformanceCounterNotInitialized) || errors.Is(err, mi.MI_RESULT_INVALID_NAMESPACE) {
+			if errors.Is(err, pdh.ErrPerformanceCounterNotInitialized) {
 				err = fmt.Errorf("%w. Check application logs from initialization pharse for more information", err)
 			}