diff --git a/webview2/scripts/generator/testfiles/ICoreWebView2.go.txt b/webview2/scripts/generator/testfiles/ICoreWebView2.go.txt
index da352fbcebc..48cf9e7fc4f 100644
--- a/webview2/scripts/generator/testfiles/ICoreWebView2.go.txt
+++ b/webview2/scripts/generator/testfiles/ICoreWebView2.go.txt
@@ -17,9 +17,14 @@ type ICoreWebView2 struct {
 	Vtbl *ICoreWebView2Vtbl
 }
 
-func (i *ICoreWebView2) AddRef() uintptr {
+func (i *ICoreWebView2) AddRef() uint32 {
 	refCounter, _, _ := i.Vtbl.AddRef.Call(uintptr(unsafe.Pointer(i)))
-	return refCounter
+	return uint32(refCounter)
+}
+
+func (i *ICoreWebView2) Release() uint32 {
+	refCounter, _, _ := i.Vtbl.Release.Call(uintptr(unsafe.Pointer(i)))
+	return uint32(refCounter)
 }
 
 
diff --git a/webview2/scripts/generator/testfiles/ICoreWebView2AcceleratorKeyPressedEventArgs.go.txt b/webview2/scripts/generator/testfiles/ICoreWebView2AcceleratorKeyPressedEventArgs.go.txt
index 9e05d6f388b..97e25484a2a 100644
--- a/webview2/scripts/generator/testfiles/ICoreWebView2AcceleratorKeyPressedEventArgs.go.txt
+++ b/webview2/scripts/generator/testfiles/ICoreWebView2AcceleratorKeyPressedEventArgs.go.txt
@@ -16,9 +16,14 @@ type ICoreWebView2AcceleratorKeyPressedEventArgs struct {
 	Vtbl *ICoreWebView2AcceleratorKeyPressedEventArgsVtbl
 }
 
-func (i *ICoreWebView2AcceleratorKeyPressedEventArgs) AddRef() uintptr {
+func (i *ICoreWebView2AcceleratorKeyPressedEventArgs) AddRef() uint32 {
 	refCounter, _, _ := i.Vtbl.AddRef.Call(uintptr(unsafe.Pointer(i)))
-	return refCounter
+	return uint32(refCounter)
+}
+
+func (i *ICoreWebView2AcceleratorKeyPressedEventArgs) Release() uint32 {
+	refCounter, _, _ := i.Vtbl.Release.Call(uintptr(unsafe.Pointer(i)))
+	return uint32(refCounter)
 }
 
 
diff --git a/webview2/scripts/generator/testfiles/ICoreWebView2CustomSchemeRegistration.go.txt b/webview2/scripts/generator/testfiles/ICoreWebView2CustomSchemeRegistration.go.txt
index 5f84641027b..f4902eb6ce1 100644
--- a/webview2/scripts/generator/testfiles/ICoreWebView2CustomSchemeRegistration.go.txt
+++ b/webview2/scripts/generator/testfiles/ICoreWebView2CustomSchemeRegistration.go.txt
@@ -16,24 +16,40 @@ type ICoreWebView2CustomSchemeRegistration struct {
 	Vtbl *ICoreWebView2CustomSchemeRegistrationVtbl
 }
 
-func (i *ICoreWebView2CustomSchemeRegistration) AddRef() uintptr {
+func (i *ICoreWebView2CustomSchemeRegistration) AddRef() uint32 {
 	refCounter, _, _ := i.Vtbl.AddRef.Call(uintptr(unsafe.Pointer(i)))
-	return refCounter
+	return uint32(refCounter)
 }
 
+func (i *ICoreWebView2CustomSchemeRegistration) Release() uint32 {
+	refCounter, _, _ := i.Vtbl.Release.Call(uintptr(unsafe.Pointer(i)))
+	return uint32(refCounter)
+}
 
-func (i *ICoreWebView2CustomSchemeRegistration) SetAllowedOrigins(allowedOriginsCount uint32, allowedOrigins string) error {
 
-	// Convert string 'allowedOrigins' to *uint16
-	_allowedOrigins, err := UTF16PtrFromString(allowedOrigins)
+func (i *ICoreWebView2CustomSchemeRegistration) SetAllowedOrigins(allowedOriginsCount uint32, allowedOrigins []string) error {
+
+	// Convert []string 'allowedOrigins' to []*uint16
+	_allowedOrigins, err := (func() ([]*uint16, error) {
+		result := make([]*uint16, len(allowedOrigins))
+		for _i, _s := range allowedOrigins {
+			p, e := UTF16PtrFromString(_s)
+			if e != nil {
+				return nil, e
+			}
+			result[_i] = p
+		}
+		return result, nil
+	})()
 	if err != nil {
 		return err
 	}
 
+
 	hr, _, err := i.Vtbl.SetAllowedOrigins.Call(
 		uintptr(unsafe.Pointer(i)),
 		uintptr(unsafe.Pointer(&allowedOriginsCount)),
-		uintptr(unsafe.Pointer(_allowedOrigins)),
+		uintptr(unsafe.Pointer(&_allowedOrigins[0])),
 	)
 	if windows.Handle(hr) != windows.S_OK {
 		return syscall.Errno(hr)
diff --git a/webview2/scripts/generator/testfiles/ICoreWebView2FrameInfo.go.txt b/webview2/scripts/generator/testfiles/ICoreWebView2FrameInfo.go.txt
index 1d81a143643..da52141aa74 100644
--- a/webview2/scripts/generator/testfiles/ICoreWebView2FrameInfo.go.txt
+++ b/webview2/scripts/generator/testfiles/ICoreWebView2FrameInfo.go.txt
@@ -17,9 +17,14 @@ type ICoreWebView2FrameInfo struct {
 	Vtbl *ICoreWebView2FrameInfoVtbl
 }
 
-func (i *ICoreWebView2FrameInfo) AddRef() uintptr {
+func (i *ICoreWebView2FrameInfo) AddRef() uint32 {
 	refCounter, _, _ := i.Vtbl.AddRef.Call(uintptr(unsafe.Pointer(i)))
-	return refCounter
+	return uint32(refCounter)
+}
+
+func (i *ICoreWebView2FrameInfo) Release() uint32 {
+	refCounter, _, _ := i.Vtbl.Release.Call(uintptr(unsafe.Pointer(i)))
+	return uint32(refCounter)
 }
 
 
@@ -30,7 +35,7 @@ func (i *ICoreWebView2FrameInfo) GetName() (string, error) {
 
 	hr, _, err := i.Vtbl.GetName.Call(
 		uintptr(unsafe.Pointer(i)),
-		uintptr(unsafe.Pointer(_name)),
+		uintptr(unsafe.Pointer(&_name)),
 	)
 	if windows.Handle(hr) != windows.S_OK {
 		return "", syscall.Errno(hr)
@@ -48,7 +53,7 @@ func (i *ICoreWebView2FrameInfo) GetSource() (string, error) {
 
 	hr, _, err := i.Vtbl.GetSource.Call(
 		uintptr(unsafe.Pointer(i)),
-		uintptr(unsafe.Pointer(_source)),
+		uintptr(unsafe.Pointer(&_source)),
 	)
 	if windows.Handle(hr) != windows.S_OK {
 		return "", syscall.Errno(hr)
diff --git a/webview2/scripts/generator/testfiles/ICoreWebView2ProcessFailedEventArgs2.go.txt b/webview2/scripts/generator/testfiles/ICoreWebView2ProcessFailedEventArgs2.go.txt
index c16dd90606f..3620161757d 100644
--- a/webview2/scripts/generator/testfiles/ICoreWebView2ProcessFailedEventArgs2.go.txt
+++ b/webview2/scripts/generator/testfiles/ICoreWebView2ProcessFailedEventArgs2.go.txt
@@ -16,22 +16,29 @@ type ICoreWebView2ProcessFailedEventArgs2 struct {
 	Vtbl *ICoreWebView2ProcessFailedEventArgs2Vtbl
 }
 
-func (i *ICoreWebView2ProcessFailedEventArgs2) AddRef() uintptr {
+func (i *ICoreWebView2ProcessFailedEventArgs2) AddRef() uint32 {
 	refCounter, _, _ := i.Vtbl.AddRef.Call(uintptr(unsafe.Pointer(i)))
-	return refCounter
+	return uint32(refCounter)
+}
+
+func (i *ICoreWebView2ProcessFailedEventArgs2) Release() uint32 {
+	refCounter, _, _ := i.Vtbl.Release.Call(uintptr(unsafe.Pointer(i)))
+	return uint32(refCounter)
 }
 
 
-func (i *ICoreWebView2) GetICoreWebView2ProcessFailedEventArgs2() *ICoreWebView2ProcessFailedEventArgs2 {
+func (i *ICoreWebView2) GetICoreWebView2ProcessFailedEventArgs2() (*ICoreWebView2ProcessFailedEventArgs2, error) {
 	var result *ICoreWebView2ProcessFailedEventArgs2
 
 	iidICoreWebView2ProcessFailedEventArgs2 := NewGUID("{4dab9422-46fa-4c3e-a5d2-41d2071d3680}")
-	_, _, _ = i.Vtbl.QueryInterface.Call(
+	hr, _, _ := i.Vtbl.QueryInterface.Call(
 		uintptr(unsafe.Pointer(i)),
 		uintptr(unsafe.Pointer(iidICoreWebView2ProcessFailedEventArgs2)),
 		uintptr(unsafe.Pointer(&result)))
-
-	return result
+	if windows.Handle(hr) != windows.S_OK {
+		return nil, syscall.Errno(hr)
+	}
+	return result, nil
 }
 
 
diff --git a/webview2/scripts/generator/testfiles/ICoreWebView2_3.go.txt b/webview2/scripts/generator/testfiles/ICoreWebView2_3.go.txt
index e6757908b5c..aea387cf462 100644
--- a/webview2/scripts/generator/testfiles/ICoreWebView2_3.go.txt
+++ b/webview2/scripts/generator/testfiles/ICoreWebView2_3.go.txt
@@ -16,22 +16,29 @@ type ICoreWebView2_3 struct {
 	Vtbl *ICoreWebView2_3Vtbl
 }
 
-func (i *ICoreWebView2_3) AddRef() uintptr {
+func (i *ICoreWebView2_3) AddRef() uint32 {
 	refCounter, _, _ := i.Vtbl.AddRef.Call(uintptr(unsafe.Pointer(i)))
-	return refCounter
+	return uint32(refCounter)
+}
+
+func (i *ICoreWebView2_3) Release() uint32 {
+	refCounter, _, _ := i.Vtbl.Release.Call(uintptr(unsafe.Pointer(i)))
+	return uint32(refCounter)
 }
 
 
-func (i *ICoreWebView2) GetICoreWebView2_3() *ICoreWebView2_3 {
+func (i *ICoreWebView2) GetICoreWebView2_3() (*ICoreWebView2_3, error) {
 	var result *ICoreWebView2_3
 
 	iidICoreWebView2_3 := NewGUID("{A0D6DF20-3B92-416D-AA0C-437A9C727857}")
-	_, _, _ = i.Vtbl.QueryInterface.Call(
+	hr, _, _ := i.Vtbl.QueryInterface.Call(
 		uintptr(unsafe.Pointer(i)),
 		uintptr(unsafe.Pointer(iidICoreWebView2_3)),
 		uintptr(unsafe.Pointer(&result)))
-
-	return result
+	if windows.Handle(hr) != windows.S_OK {
+		return nil, syscall.Errno(hr)
+	}
+	return result, nil
 }
 
 
diff --git a/webview2/scripts/generator/types/param.go b/webview2/scripts/generator/types/param.go
index 8075c81a9c0..b625675d35f 100644
--- a/webview2/scripts/generator/types/param.go
+++ b/webview2/scripts/generator/types/param.go
@@ -45,6 +45,10 @@ func (p *Param) Process(decl *InterfaceMethod) {
 	if p.isDoublePointer() {
 		p.GoType = "*" + p.GoType
 	}
+	// Bug 2: [in] LPWSTR* / [in] LPCWSTR* is an array of strings, not a single string
+	if p.IsInputParam() && p.isSinglePointer() && (p.Type == "LPWSTR" || p.Type == "LPCWSTR") {
+		p.GoType = "[]string"
+	}
 	p.OutputGoType = p.GoType
 	if p.IsOutputParam() && strings.HasPrefix(p.OutputGoType, "**") {
 		p.OutputGoType = p.GoType[1:]
@@ -65,7 +69,8 @@ func (p *Param) isDoublePointer() bool {
 }
 
 func (p *Param) AsInputType() string {
-	if p.isPointer() && p.GoType != "string" {
+	// For string slices ([]string from [in] LPWSTR*) and plain strings, pass as-is
+	if p.isPointer() && p.GoType != "string" && !strings.HasPrefix(p.GoType, "[]") {
 		return "*" + p.GoType
 	}
 	return p.GoType
@@ -109,7 +114,15 @@ func (p *Param) processVtableCallInput() {
 	}
 	switch p.Type {
 	case "LPCWSTR", "LPWSTR":
-		p.VtableCallInput = "uintptr(unsafe.Pointer(" + variableName + "))"
+		if p.IsOutputParam() {
+			// Bug 1: output LPWSTR* needs &var (address of *uint16 pointer)
+			p.VtableCallInput = "uintptr(unsafe.Pointer(&" + variableName + "))"
+		} else if p.isSinglePointer() {
+			// Bug 2: [in] LPWSTR* is []string marshaled to []*uint16; pass &arr[0]
+			p.VtableCallInput = "uintptr(unsafe.Pointer(&" + variableName + "[0]))"
+		} else {
+			p.VtableCallInput = "uintptr(unsafe.Pointer(" + variableName + "))"
+		}
 		return
 	}
 	if p.Pointer == "**" {
@@ -165,6 +178,10 @@ func (p *Param) processSetupInputs() {
 		// We need to convert to *uint16
 		p.setupTemplate = "inputStringSetup.tmpl"
 		p.LocalName = "_" + p.Name
+	case "[]string":
+		// Bug 2: [in] LPWSTR* array — convert each element to *uint16
+		p.setupTemplate = "inputStringArraySetup.tmpl"
+		p.LocalName = "_" + p.Name
 	}
 }
 
diff --git a/webview2/scripts/generator/types/templates/com.tmpl b/webview2/scripts/generator/types/templates/com.tmpl
index d74edfa22ac..037a02fa527 100644
--- a/webview2/scripts/generator/types/templates/com.tmpl
+++ b/webview2/scripts/generator/types/templates/com.tmpl
@@ -44,8 +44,8 @@ func (i *IUnknownVtbl) CallRelease(this unsafe.Pointer) error {
 
 type IUnknownImpl interface {
 	QueryInterface(refiid, object uintptr) uintptr
-	AddRef() uintptr
-	Release() uintptr
+	AddRef() uint32
+	Release() uint32
 }
 
 // Call calls a COM procedure.
@@ -72,8 +72,15 @@ type HMENU uintptr
 type HMODULE uintptr
 type HWND uintptr
 
-// NOTE: For sure, this is wrong!
-type VARIANT uintptr
+// VARIANT is a 16-byte Windows VARIANT type matching the Windows ABI.
+// The Val field is a union; callers must interpret it based on VT.
+type VARIANT struct {
+	VT        uint16
+	Reserved1 uint16
+	Reserved2 uint16
+	Reserved3 uint16
+	Val       [8]byte
+}
 
 type IDataObject struct {
 	IUnknown
diff --git a/webview2/scripts/generator/types/templates/inputStringArraySetup.tmpl b/webview2/scripts/generator/types/templates/inputStringArraySetup.tmpl
new file mode 100644
index 00000000000..ce46bfd0dab
--- /dev/null
+++ b/webview2/scripts/generator/types/templates/inputStringArraySetup.tmpl
@@ -0,0 +1,16 @@
+
+	// Convert []string '{{.Param.Name}}' to []*uint16
+	{{.Param.LocalName}}, err := (func() ([]*uint16, error) {
+		result := make([]*uint16, len({{.Param.Name}}))
+		for _i, _s := range {{.Param.Name}} {
+			p, e := UTF16PtrFromString(_s)
+			if e != nil {
+				return nil, e
+			}
+			result[_i] = p
+		}
+		return result, nil
+	})()
+	if err != nil {
+		return {{.ErrorValues}}
+	}
diff --git a/webview2/scripts/generator/types/templates/interfaceInvoke.tmpl b/webview2/scripts/generator/types/templates/interfaceInvoke.tmpl
index 316f83a30d7..e33b981860c 100644
--- a/webview2/scripts/generator/types/templates/interfaceInvoke.tmpl
+++ b/webview2/scripts/generator/types/templates/interfaceInvoke.tmpl
@@ -3,11 +3,11 @@ func {{.Name}}IUnknownQueryInterface(this *{{.Declaration.Name}}, refiid, object
 }
 
 func {{.Declaration.Name}}IUnknownAddRef(this *{{.Declaration.Name}}) uintptr {
-	return this.impl.AddRef()
+	return uintptr(this.impl.AddRef())
 }
 
 func {{.Declaration.Name}}IUnknownRelease(this *{{.Declaration.Name}}) uintptr {
-	return this.impl.Release()
+	return uintptr(this.impl.Release())
 }
 
 func {{.Declaration.Name}}Invoke(this *{{.Declaration.Name}}, {{.InvokeMethod.GoInputs}}) uintptr {
diff --git a/webview2/scripts/generator/types/templates/interfacevtbl.tmpl b/webview2/scripts/generator/types/templates/interfacevtbl.tmpl
index 19261498ec8..5e9eb858e00 100644
--- a/webview2/scripts/generator/types/templates/interfacevtbl.tmpl
+++ b/webview2/scripts/generator/types/templates/interfacevtbl.tmpl
@@ -24,22 +24,29 @@ type {{.Name}} struct {
 	{{- end}}
 }
 
-func (i *{{.Name}}) AddRef() uintptr {
+func (i *{{.Name}}) AddRef() uint32 {
 	refCounter, _, _ := i.Vtbl.AddRef.Call(uintptr(unsafe.Pointer(i)))
-	return refCounter
+	return uint32(refCounter)
+}
+
+func (i *{{.Name}}) Release() uint32 {
+	refCounter, _, _ := i.Vtbl.Release.Call(uintptr(unsafe.Pointer(i)))
+	return uint32(refCounter)
 }
 
 {{if .BaseClass }}
-func (i *ICoreWebView2) Get{{.Name}}() *{{.Name}} {
+func (i *ICoreWebView2) Get{{.Name}}() (*{{.Name}}, error) {
 	var result *{{.Name}}
 
 	iid{{.Name}} := NewGUID({{.Header.AsString}})
-	_, _, _ = i.Vtbl.QueryInterface.Call(
+	hr, _, _ := i.Vtbl.QueryInterface.Call(
 		uintptr(unsafe.Pointer(i)),
 		uintptr(unsafe.Pointer(iid{{.Name}})),
 		uintptr(unsafe.Pointer(&result)))
-
-	return result
+	if windows.Handle(hr) != windows.S_OK {
+		return nil, syscall.Errno(hr)
+	}
+	return result, nil
 }
 
 {{end}}
\ No newline at end of file