We've deciphered the exclusions required to get WIMBOOT on ARM64 working.
The Microsoft supplied default wimbootcompress.ini doesn't quite cut it.
We had to sift through thousands of EXEs and DLLs to get a proper exclusion going.
In the end, it's just 7 EXEs, 13 DLLs, and one driver folder - out of literally thousands of items to check - that were missing.
With Windows about to have its M1 moment, hopefully this is appreciated by folks
Just reply if you'd like to preview the list.