WhyNotWin11 | Results
Open source | Release 2.7
WhyNotWin11
Know exactly why your PC can’t run Windows 11. Check TPM 2.0, Secure Boot, processor support, RAM, storage and DirectX. The report shows which requirements pass and which need attention.
✓ Portable ✓ No installation ✓ LGPL-3.0
✓TPM 2.0✓Secure Boot✓CPU generation✓CPU cores✓DirectX 12✓WDDM 2✓RAM✓Storage✓UEFI✓Disk GPT✓Architecture✓TPM 2.0✓Secure Boot✓CPU generation✓CPU cores✓DirectX 12✓WDDM 2✓RAM✓Storage✓UEFI✓Disk GPT✓Architecture
Windows 11 system checks
Review each Windows 11
requirement.
WhyNotWin11 lists the hardware and firmware checks used for Windows 11 and reports the result for each one.
01 / WINDOWS
Review the full report
See the result of each Windows 11 compatibility check in one list.
CPU PASSSecure Boot PASSTPM CHECK
02 / TPM
Check TPM 2.0
See whether TPM 2.0 is present, disabled or needs to be enabled in firmware.
03 / SECURE BOOT
Check Secure Boot
Review UEFI, GPT and Secure Boot as separate compatibility requirements.
Compatibility report
Review every
requirement.
Select a check to see what WhyNotWin11 tests and what a failed result can mean.
Security
Check the TPM version
WhyNotWin11 detects whether TPM is present, enabled and meets version 2.0. It also reports when the setting may be disabled in firmware.
iOften enabled as Intel PTT or AMD fTPM in UEFI/BIOS.
Product screenshots
WhyNotWin11
themes.
Release 2.7 supports custom regions, text colors and background images. These screenshots come from the project release.
How it works
Use WhyNotWin11 in three steps.
Download
Get the latest stable portable executable directly from the official GitHub release.
Run the scan
Open the app. Administrator rights are optional for the core compatibility check.
Read the result
Pass, warning and fail states show which Windows 11 requirements need attention.
Program details
Portable and
open source.
WhyNotWin11 checks Windows 11 compatibility without an account or installer. The source code is available on GitHub.
Open sourceNo accountPortable EXE60+ languages
Inspect the source on GitHub ↗system_requirements.txt
EnvironmentWinPE / Windows 8.1+✓
Processor32-bit single core✓
Memory40 MB free✓
Storage5 MB free✓
RecommendedLatest Windows 10→
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WhyNotWin11 reports each Windows 11 requirement separately, so you can identify the specific hardware or firmware check that fails.
Open source | GitHub | LGPL-3.0
Questions and answers
WhyNotWin11 FAQ.
Information about downloading and using the Windows 11 compatibility checker.
What is the WhyNotWin11 tool?+
WhyNotWin11 is a free, open-source Windows utility that explains which Windows 11 hardware requirements your PC passes or fails. It checks TPM, Secure Boot, CPU support, RAM, storage, graphics and other upgrade blockers in one portable app.
Where is the official WhyNotWin11 download?+
Use the Download button on this page. It points directly to the latest stable WhyNotWin11.exe published in the official rcmaehl/WhyNotWin11 GitHub releases. The tool is portable, so there is no installer.
Is the WhyNotWin11 GitHub project safe and open source?+
The source code is public on GitHub and licensed under LGPL-3.0. You can review the AutoIt source, release history and checks before running the executable. As with any utility, download only from the official repository.
Why does WhyNotWin11 say TPM 2.0 is missing?+
A compatible TPM may be disabled in firmware. Look in UEFI/BIOS for Intel PTT, AMD fTPM, Security Device or Trusted Computing. WhyNotWin11 reports the state, but it does not change firmware settings for you.
How is it different from Microsoft PC Health Check?+
PC Health Check gives a high-level eligibility result. WhyNotWin11 is built for diagnosis: it lays out individual pass/fail results so you can identify the exact component or setting blocking a Windows 11 upgrade.
Does WhyNotWin11 work without administrator rights?+
Yes. WhyNotWin11 can perform its core compatibility scan without mandatory administrator rights. Some deeper system information may be more complete when it is run as administrator.
Which Windows versions can run WhyNotWin11?+
The current project documentation lists WinPE and Windows 8.1 as the minimum supported environments, with a recent Windows 10 build recommended. Other operating systems are not supported.
Official release 2.7
Download
WhyNotWin11.
Run the portable program to check this PC against the Windows 11 requirements.
Free | Portable | Open source