Look at the compile date. 20 Dec 2018. This was compiled before Christmas. So 18309 is last Build of 2018 NOT 1st Build of 2019.
Sandbox working fine in the build too. It does have a few glitches though that I reported to/in the Feedback hub.
18309.1000_amd64_en-us_07bad6fe_convert worked as expected... 18309.1000.181220-1256.RS_PRERELEASE_CLIENTMULTI_UUP_x64FRE_EN-US trying the "virtuals.cmd" as i devour apple pie à la mode ...
Working in Pro for Workstations here after upgrade from 18305. Seems to be a little slow in opening, but working fine nonetheless.
Has anyone got the password-less phone sign in to work ? On my main PC, I don't get a "web sign-in", I just get "your credentials could not be verified" *Update* On my Laptop, I got my phone number sign-in, to produce the web sign-in ok, but it appears that somehow my phone number account has a password already ?
I'm not sure what you mean by "the date thing". If you can be more specific, I'll check it here to see if it is working.