esd-decrypter-wimlib-15 Works just fine with this Build. You don't need a new Key. If you don't have 15 yet, 14 still works.
clean install all is well the issues are gone from last build with the slow opening of apps and folders
Glad to report that 14267 installed perfectly, on my first attempt! They fixed the bugs relative to installation that some folks had with 14251/14257 (I could install neither build)--good job Microsoft...