[Bug]: GenFw Missing option on VS2026

[coloredneko]

Is there an existing issue for this?

• I have searched existing issues

Bug Type

• Firmware
• Tool
• Unit Test

What packages are impacted?

BaseTools

Which targets are impacted by this bug?

RELEASE

Current Behavior

A prompt "GenFw: ERROR 1001: Missing option
No create file action specified; pls specify -e, -c or -t option to create efi image, or acpi table or TeImage!" appears

Expected Behavior

build successfully

Steps To Reproduce

1. edksetup.bat Rebuild VS2026
2. open \efi\edk2\Conf\target.txt
ACTIVE_PLATFORM to MdeModulePkg/MdeModulePkg.dsc
TARGET to RELEASE
TARGET_ARCH to X64
TOOL_CHAIN_TAG to VS2026
3. edksetup.bat VS2026
4. build

Build Environment

- OS(s): windows11 25h2
- Tool Chain(s): VS2026

Version Information

Tag: edk2-stable202602

Urgency

Medium

Are you going to fix this?

Someone else needs to fix it

Do you need maintainer feedback?

Maintainer feedback requested

Anything else?

Add " VS2026_GENFWHII_FLAGS = --hiipackage " after line 852 in "Conf/tools_def.txt" can compile normally