fix: activate COM classes by CLSID instead of ProgID (#2546)

Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-authored-by: Jan-Otto Kröpke <mail@jkroepke.de>
Signed-off-by: safster123 <97958730+safster123@users.noreply.github.com>

internal/collector/scheduled_task/scheduled_task.go

@@ -284,7 +284,15 @@ func (c *Collector) collectMetrics(ch chan<- prometheus.Metric, scheduledTasks S
 	}
 }
 
-const SCHEDULED_TASK_PROGRAM_ID = "Schedule.Service.1"
+// CLSID_TaskScheduler {0F87369F-A4E5-4CFC-BD3E-73E6154572DD}: https://github.com/microsoft/win32metadata/blob/76c04c2021ef4a831a6f1e06d9566002d746139b/generation/WinSDK/RecompiledIdlHeaders/um/taskschd.h#L10359
+//
+//nolint:gochecknoglobals // CLSID, not ProgID: go-ole's CLSIDFromProgID can free the ProgID buffer mid-call
+var taskSchedulerCLSID = ole.GUID{
+	Data1: 0x0F87369F,
+	Data2: 0xA4E5,
+	Data3: 0x4CFC,
+	Data4: [8]byte{0xBD, 0x3E, 0x73, 0xE6, 0x15, 0x45, 0x72, 0xDD},
+}
 
 // S_FALSE is returned by CoInitialize if it was already called on this thread.
 const S_FALSE = 0x00000001
@@ -308,12 +316,7 @@ func getScheduledTasks() (ScheduledTasks, error) {
 
 	defer ole.CoUninitialize()
 
-	schedClassID, err := ole.ClassIDFrom(SCHEDULED_TASK_PROGRAM_ID)
-	if err != nil {
-		return scheduledTasks, err
-	}
-
-	taskSchedulerObj, err := ole.CreateInstance(schedClassID, nil)
+	taskSchedulerObj, err := ole.CreateInstance(&taskSchedulerCLSID, nil)
 	if err != nil || taskSchedulerObj == nil {
 		return scheduledTasks, err
 	}

internal/collector/update/update.go

@@ -38,6 +38,16 @@ import (
 
 const Name = "update"
 
+// CLSID_UpdateSession {4CB43D7F-7EEE-4906-8698-60DA1C38F2FE}: https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-uamg/e839e7e0-1795-451b-94ef-abacd6cbecac
+//
+//nolint:gochecknoglobals // CLSID, not ProgID: go-ole's CLSIDFromProgID can free the ProgID buffer mid-call
+var updateSessionCLSID = ole.GUID{
+	Data1: 0x4CB43D7F,
+	Data2: 0x7EEE,
+	Data3: 0x4906,
+	Data4: [8]byte{0x86, 0x98, 0x60, 0xDA, 0x1C, 0x38, 0xF2, 0xFE},
+}
+
 type Config struct {
 	Online         bool          `yaml:"online"`
 	ScrapeInterval time.Duration `yaml:"scrape-interval"`
@@ -191,7 +201,7 @@ func (c *Collector) scheduleUpdateStatus(ctx context.Context, logger *slog.Logge
 	defer ole.CoUninitialize()
 
 	// Create a new instance of the WMI object
-	sessionObj, err := oleutil.CreateObject("Microsoft.Update.Session")
+	sessionObj, err := ole.CreateInstance(&updateSessionCLSID, ole.IID_IUnknown)
 	if err != nil {
 		initErrCh <- fmt.Errorf("create Microsoft.Update.Session: %w", err)