Appraiser.dll controls whether a device can installs a Windows 11 Update packages, and the policy it's using can be find in Appraiser_Data.ini.
Scripts in this repo tries to patch Appraiser.dll automatically for each Windows 11 update.
Note: you can use OfflineInsiderEnroll to forcely enroll and upgrade to Windows 11
Directly run the Python script (note: 3.8+ required), or add it to task scheduler
When update system using Windows Update, magic happens inside:
- WindowsUpdateBox.exe (located in C:\Windows\SoftwareDistribution\Download\XXXXXXXX) is called by svchost
- WindowsUpdateBox.exe creates C:$WINDOWS.~BT, checking the hash, and releasing SetupHost.exe installer
- SetupHost.exe invoking Appraiser to check requirements
This tweak does these things:
- watches directory C:\Windows\SoftwareDistribution\Download, and dll hijacks all WindowsUpdateBox.exe with VERSION.dll
- hook CreateProcess, and replace Appraiser.dll in C:$WINDOWS.~BT
The patched appraiser.dll included in this repo is only replacing DT_ANY_SYS_BlockingSystem to DT_ANY_SYS_NonBlockSystem
If you don't trust me, then go ahead and patch it yourself.