diff --git a/extractor/standalone/windows/dismpatch/extractor_windows.go b/extractor/standalone/windows/dismpatch/extractor_windows.go
index 4b048fd8..98ee6bd6 100644
--- a/extractor/standalone/windows/dismpatch/extractor_windows.go
+++ b/extractor/standalone/windows/dismpatch/extractor_windows.go
@@ -55,9 +55,10 @@ func (e *Extractor) Extract(ctx context.Context, input *standalone.ScanInput) ([
 // ToPURL converts an inventory created by this extractor into a PURL.
 func (e Extractor) ToPURL(i *extractor.Inventory) (*purl.PackageURL, error) {
 	return &purl.PackageURL{
-		Type:    purl.TypeMicrosoft,
-		Name:    i.Name,
-		Version: i.Version,
+		Type:      purl.TypeGeneric,
+		Namespace: "microsoft",
+		Name:      i.Name,
+		Version:   i.Version,
 	}, nil
 }
 
diff --git a/extractor/standalone/windows/regosversion/extractor_windows.go b/extractor/standalone/windows/regosversion/extractor_windows.go
index 1152d941..6042af16 100644
--- a/extractor/standalone/windows/regosversion/extractor_windows.go
+++ b/extractor/standalone/windows/regosversion/extractor_windows.go
@@ -120,9 +120,10 @@ func (e Extractor) windowsRevision(key registry.Key) (uint64, error) {
 // ToPURL converts an inventory created by this extractor into a PURL.
 func (e Extractor) ToPURL(i *extractor.Inventory) (*purl.PackageURL, error) {
 	return &purl.PackageURL{
-		Type:    purl.TypeMicrosoft,
-		Name:    i.Name,
-		Version: i.Version,
+		Type:      purl.TypeGeneric,
+		Namespace: "microsoft",
+		Name:      i.Name,
+		Version:   i.Version,
 	}, nil
 }
 
diff --git a/extractor/standalone/windows/regpatchlevel/extractor_windows.go b/extractor/standalone/windows/regpatchlevel/extractor_windows.go
index 2e863155..b5d00f04 100644
--- a/extractor/standalone/windows/regpatchlevel/extractor_windows.go
+++ b/extractor/standalone/windows/regpatchlevel/extractor_windows.go
@@ -120,9 +120,10 @@ func (e *Extractor) handleKey(registryPath, keyName string) (*extractor.Inventor
 // ToPURL converts an inventory created by this extractor into a PURL.
 func (e Extractor) ToPURL(i *extractor.Inventory) (*purl.PackageURL, error) {
 	return &purl.PackageURL{
-		Type:    purl.TypeMicrosoft,
-		Name:    i.Name,
-		Version: i.Version,
+		Type:      purl.TypeGeneric,
+		Namespace: "microsoft",
+		Name:      i.Name,
+		Version:   i.Version,
 	}, nil
 }
 
diff --git a/purl/purl.go b/purl/purl.go
index 971c7050..d642a758 100644
--- a/purl/purl.go
+++ b/purl/purl.go
@@ -79,8 +79,6 @@ const (
 	TypeRPM = "rpm"
 	// TypeSwift is pkg:swift purl
 	TypeSwift = "swift"
-	// TypeMicrosoft is pkg:microsoft purl
-	TypeMicrosoft = "microsoft"
 	// TypeGooget is pkg:googet purl
 	TypeGooget = "googet"
 )
@@ -168,7 +166,6 @@ func validType(t string) bool {
 		TypePyPi:      true,
 		TypeRPM:       true,
 		TypeSwift:     true,
-		TypeMicrosoft: true,
 		TypeGooget:    true,
 	}